Date   

Re: [ap-ug] Astro-Physics Mach1GTO vs Mach2GTO

thefamily90 Phillips
 

Beautiful mounts! Hey Moose ūüĎč!


From: main@ap-ug.groups.io <main@ap-ug.groups.io> on behalf of Harley Davidson <astrocnc@...>
Sent: Friday, March 12, 2021 6:56:13 PM
To: main@ap-ug.groups.io <main@ap-ug.groups.io>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-ug] Astro-Physics Mach1GTO vs Mach2GTO
 
My buddy Tom's Mach1 and my Mach2 compared.

Astro-Physics Mach1GTO vs Mach2GTO Mount - a comparison
https://www.youtube.com/watch?v=1Hla5MIwYrk


tony


Astro-Physics Mach1GTO vs Mach2GTO

Harley Davidson
 

My buddy Tom's Mach1 and my Mach2 compared.

Astro-Physics Mach1GTO vs Mach2GTO Mount - a comparison
https://www.youtube.com/watch?v=1Hla5MIwYrk


tony


Re: Mach2 - Elongated stars

Bill Long
 

I did have my scope well-balanced in both axis. I guided it for a short while as a test for a 5 min sub (image below) then turned it off and went unguided and noticed the stars were of identical quality, so I went unguided for the evening instead.




From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of yanzhe liu <liuyanzhe@...>
Sent: Friday, March 12, 2021 2:41 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 - Elongated stars
 
I have been using mach1 and 1100 prior to mach2. I knew I changed mount to mach2 in ascom driver.

Let me try again with balanced DEC, as suggested by Roland, to see if the issue is going away.  

On Thu, Mar 11, 2021 at 7:38 AM Ray Gralak <iogroups@...> wrote:
Yanzhe,

> I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated
> 12/29/2018. Maybe I did not enable ASCOM log.

Hmmm... that is not the default. Did you happen to use this computer with another A-P mount in the past?

Since it is probably a small file, please attach that zip file to a post. It's worth checking the settings to see if anything stands out as an incorrect setting.

BTW, can you also provide a dropbox or google drive link to one of the single raw FITS images with the elongated stars? It's important that it is an unprocessed image and not a jpeg or stacked with other images.

Thanks,

-Ray

> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
> Sent: Wednesday, March 10, 2021 10:36 PM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] Mach2 - Elongated stars
>
> Ray,
>
> I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated
> 12/29/2018. Maybe I did not enable ASCOM log.
>
> Yanzhe
>
> On Sun, Mar 7, 2021 at 7:37 PM Ray Gralak <iogroups@...> wrote:
>
>
>       Yanhze,
>
>       > Where is ASCOM driver log? I dont use APCC, I use SGPro.
>
>       The AP V2 ASCOM driver, which you must use with SGPro, comes with a log zipper utility called "AP Log
> Zipper". You should be able to find it from the Windows start menu by typing that name. The utility will grab the log files
> for X number of days in the past. If you can't find it, you probably didn't install it when you installed the AP V2 driver. In
> that case, just reinstall the AP V2 driver and select the option to install it.
>
>       BTW, you can use APCC with SGPro. In fact, it is recommended. An APCC Pro license comes with your
> Mach2 mount, but you must contact A-P to get it.
>
>       -Ray
>
>
>       > -----Original Message-----
>       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       > Sent: Sunday, March 7, 2021 4:19 PM
>       > To: main@ap-gto.groups.io
>       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >
>       > Ray,
>       >
>       > Where is ASCOM driver log? I dont use APCC, I use SGPro.
>       >
>       > Yanzhe
>       >
>       > On Sun, Mar 7, 2021 at 10:45 AM Ray Gralak <iogroups@...> wrote:
>       >
>       >
>       >       Hi Yanzhe,
>       >
>       >       Can you zip and post your PHD2 logs, as well as APCC/AP V2 ASCOM driver logs?
>       >
>       >       There might be something useful there.
>       >
>       >       -Ray
>       >
>       >       > -----Original Message-----
>       >       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       >       > Sent: Sunday, March 7, 2021 10:12 AM
>       >       > To: main@ap-gto.groups.io
>       >       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >       >
>       >       > Roland,
>       >       >
>       >       > I will check my mount serial number later as I just packed everything due to rain forecast.
>       >       >
>       >       > My camera's orientation was 0/180 degree, so I assume top to bottom elongation would be DEC.
>       >       >
>       >       > I dont have any picture of my setup, I just tore it down since it will be rainy this week. My setup is
>       >       > FSQ106+OAG+16803, image scale is 3.5".
>       >       > I was imaging Rosetta Nebula, after it was just past meridian for 2-3 hours.
>       >       >
>       >       > I used PHD2 drift for PA, it reported <5' PA error, I am waiting for polemaster adapter so I can confirm I
> get
>       > good PA
>       >       > next time.
>       >       >
>       >       > DEC was out of balance because my setup was rear end heavy, if it was in balance position then I
> could
>       > not rotate
>       >       > my CCD in all directions. My guess is that the DEC balance was off by less than 1lb. In the next test, I
> can
>       > balance
>       >       > DEC to see if the issue still exists.
>       >       >
>       >       > My suspicion is that if DEC balance is off, then DEC might creep under gravity, even PA is perfect. So
> you
>       > might
>       >       > see DEC continually drift  then gets corrected by PHD2 periodically.
>       >       >
>       >       > Yanzhe
>       >       >
>       >       > On Sun, Mar 7, 2021 at 9:35 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
>       >       >
>       >       >
>       >       >       Couple of questions:
>       >       >
>       >       >
>       >       >       1 - what's the mount's serial number
>       >       >       2 - which axis is the elongation
>       >       >       3 - which direction was the scope pointing (RA-Dec)
>       >       >       4 - what scope and focal length or what is the arc sec per pixel.
>       >       >       5 - do you have a picture of your setup?
>       >       >
>       >       >
>       >       >
>       >       >       One comment about balance - it should be easy for you to completely balance the scope with the
>       > clutches
>       >       > loose. Can you estimate how many lb out of balance your scope is in Dec? Normally i would not think
> this
>       > would
>       >       > have any effect, but doesn't hurt to check this.
>       >       >
>       >       >
>       >       >
>       >       >       Roland Christen
>       >       >       Astro-Physics Inc.
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >       -----Original Message-----
>       >       >       From: yanzhe liu <liuyanzhe@...>
>       >       >       To: main@ap-gto.groups.io
>       >       >       Sent: Sun, Mar 7, 2021 12:44 am
>       >       >       Subject: [ap-gto] Mach2 - Elongated stars
>       >       >
>       >       >
>       >       >       Testing new mach2 for a couple of nights. It works great out of the box and I am very pleased.
>       >       >
>       >       >       One issue bothering me is that I got slightly elongated stars across the entire image (15min Ha sub).
>       >       >       The exact same telescope/CCD were used with another mount and stars were round, I am
> wondering
>       > what I
>       >       > should check (I think there was due to some setup issue, but I could not figure it out).
>       >       >       - Used OAG for guiding, so there should not be any flexure.
>       >       >       - CCD orientation was 0/180 degree. The stars were elongated top to bottom.
>       >       >       -  I did polar alignment with PHD2 drift align. PA error should be < 5'. The field rotation of each sub
> is
>       > ~0.01
>       >       > degree, much larger than the other system (but elongated stars do not look like field rotation, they were
>       > same
>       >       > across the image)
>       >       >       - Both RA and DEC guiding curves looked smooth, had similar RMS. DEC correction was mainly to
>       > one
>       >       > direction.
>       >       >       - DEC balance was slightly off, camera heavy. Is Mach2 DEC sensitive to this? Will the
> guiding/image
>       > be
>       >       > affected?
>       >       >
>       >       >       I dont think any of the above is of particular concern, except DEC balance. Any comment/help is
>       > appreciated.
>       >       >
>       >       >       --
>       >       >       Roland Christen
>       >       >       Astro-Physics
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>
>
>
>
>
>
>
>
>







Re: How to Re-grease a Mach1 with Auto-Adjust Motor Boxes?

Dominique
 

Hi,
With my Mach2 in my observatory and travel restrictions, my 2011 Mach1 has been sleep for a few months, so, reading your discussions, it made me want and courage to revisit it. I already had a little control on the lubrication side 4 or 5 years ago but not completely and I believe only on the RA axis. I carefully watched the linked videos / photos to check the cleaning and regreasing phases to be done ... and I attacked the disassembly, separation of the 2 axes and treatment of the RA axis to begin with. I am not in the "extreme cold" zone and I have 2 types of grease at my disposal, one lithium (yellow) and one synthetic (green with MoS2). This evening I cleaned and I let the night pass before doing the lubrication, it remains to know which of the 2 greases it is better to use. On the brake part of the RA axis, which was a bit hard and which I have already cleaned and reassembled, I put a little synthetic grease and that seems to have improved things. So I will see tomorrow morning and based on your advice if necessary. As I had opened and / or dismantled the engine blocks several times, it didn't seem complicated to me ... you have to be careful with the cables.
Clear Skies
Dominique


Re: Mach2 - Elongated stars

Roland Christen
 

Please post a screen shot of the guider graph with corrections showing, and all other details. From that I can tell you if there is anything going on with the mount.

Rolando



-----Original Message-----
From: yanzhe liu <liuyanzhe@...>
To: main@ap-gto.groups.io
Sent: Fri, Mar 12, 2021 4:41 pm
Subject: Re: [ap-gto] Mach2 - Elongated stars

I have been using mach1 and 1100 prior to mach2. I knew I changed mount to mach2 in ascom driver.

Let me try again with balanced DEC, as suggested by Roland, to see if the issue is going away.  

On Thu, Mar 11, 2021 at 7:38 AM Ray Gralak <iogroups@...> wrote:
Yanzhe,

> I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated
> 12/29/2018. Maybe I did not enable ASCOM log.

Hmmm... that is not the default. Did you happen to use this computer with another A-P mount in the past?

Since it is probably a small file, please attach that zip file to a post. It's worth checking the settings to see if anything stands out as an incorrect setting.

BTW, can you also provide a dropbox or google drive link to one of the single raw FITS images with the elongated stars? It's important that it is an unprocessed image and not a jpeg or stacked with other images.

Thanks,

-Ray

> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
> Sent: Wednesday, March 10, 2021 10:36 PM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] Mach2 - Elongated stars
>
> Ray,
>
> I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated
> 12/29/2018. Maybe I did not enable ASCOM log.
>
> Yanzhe
>
> On Sun, Mar 7, 2021 at 7:37 PM Ray Gralak <iogroups@...> wrote:
>
>
>       Yanhze,
>
>       > Where is ASCOM driver log? I dont use APCC, I use SGPro.
>
>       The AP V2 ASCOM driver, which you must use with SGPro, comes with a log zipper utility called "AP Log
> Zipper". You should be able to find it from the Windows start menu by typing that name. The utility will grab the log files
> for X number of days in the past. If you can't find it, you probably didn't install it when you installed the AP V2 driver. In
> that case, just reinstall the AP V2 driver and select the option to install it.
>
>       BTW, you can use APCC with SGPro. In fact, it is recommended. An APCC Pro license comes with your
> Mach2 mount, but you must contact A-P to get it.
>
>       -Ray
>
>
>       > -----Original Message-----
>       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       > Sent: Sunday, March 7, 2021 4:19 PM
>       > To: main@ap-gto.groups.io
>       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >
>       > Ray,
>       >
>       > Where is ASCOM driver log? I dont use APCC, I use SGPro.
>       >
>       > Yanzhe
>       >
>       > On Sun, Mar 7, 2021 at 10:45 AM Ray Gralak <iogroups@...> wrote:
>       >
>       >
>       >       Hi Yanzhe,
>       >
>       >       Can you zip and post your PHD2 logs, as well as APCC/AP V2 ASCOM driver logs?
>       >
>       >       There might be something useful there.
>       >
>       >       -Ray
>       >
>       >       > -----Original Message-----
>       >       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       >       > Sent: Sunday, March 7, 2021 10:12 AM
>       >       > To: main@ap-gto.groups.io
>       >       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >       >
>       >       > Roland,
>       >       >
>       >       > I will check my mount serial number later as I just packed everything due to rain forecast.
>       >       >
>       >       > My camera's orientation was 0/180 degree, so I assume top to bottom elongation would be DEC.
>       >       >
>       >       > I dont have any picture of my setup, I just tore it down since it will be rainy this week. My setup is
>       >       > FSQ106+OAG+16803, image scale is 3.5".
>       >       > I was imaging Rosetta Nebula, after it was just past meridian for 2-3 hours.
>       >       >
>       >       > I used PHD2 drift for PA, it reported <5' PA error, I am waiting for polemaster adapter so I can confirm I
> get
>       > good PA
>       >       > next time.
>       >       >
>       >       > DEC was out of balance because my setup was rear end heavy, if it was in balance position then I
> could
>       > not rotate
>       >       > my CCD in all directions. My guess is that the DEC balance was off by less than 1lb. In the next test, I
> can
>       > balance
>       >       > DEC to see if the issue still exists.
>       >       >
>       >       > My suspicion is that if DEC balance is off, then DEC might creep under gravity, even PA is perfect. So
> you
>       > might
>       >       > see DEC continually drift  then gets corrected by PHD2 periodically.
>       >       >
>       >       > Yanzhe
>       >       >
>       >       > On Sun, Mar 7, 2021 at 9:35 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
>       >       >
>       >       >
>       >       >       Couple of questions:
>       >       >
>       >       >
>       >       >       1 - what's the mount's serial number
>       >       >       2 - which axis is the elongation
>       >       >       3 - which direction was the scope pointing (RA-Dec)
>       >       >       4 - what scope and focal length or what is the arc sec per pixel.
>       >       >       5 - do you have a picture of your setup?
>       >       >
>       >       >
>       >       >
>       >       >       One comment about balance - it should be easy for you to completely balance the scope with the
>       > clutches
>       >       > loose. Can you estimate how many lb out of balance your scope is in Dec? Normally i would not think
> this
>       > would
>       >       > have any effect, but doesn't hurt to check this.
>       >       >
>       >       >
>       >       >
>       >       >       Roland Christen
>       >       >       Astro-Physics Inc.
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >       -----Original Message-----
>       >       >       From: yanzhe liu <liuyanzhe@...>
>       >       >       To: main@ap-gto.groups.io
>       >       >       Sent: Sun, Mar 7, 2021 12:44 am
>       >       >       Subject: [ap-gto] Mach2 - Elongated stars
>       >       >
>       >       >
>       >       >       Testing new mach2 for a couple of nights. It works great out of the box and I am very pleased.
>       >       >
>       >       >       One issue bothering me is that I got slightly elongated stars across the entire image (15min Ha sub).
>       >       >       The exact same telescope/CCD were used with another mount and stars were round, I am
> wondering
>       > what I
>       >       > should check (I think there was due to some setup issue, but I could not figure it out).
>       >       >       - Used OAG for guiding, so there should not be any flexure.
>       >       >       - CCD orientation was 0/180 degree. The stars were elongated top to bottom.
>       >       >       -  I did polar alignment with PHD2 drift align. PA error should be < 5'. The field rotation of each sub
> is
>       > ~0.01
>       >       > degree, much larger than the other system (but elongated stars do not look like field rotation, they were
>       > same
>       >       > across the image)
>       >       >       - Both RA and DEC guiding curves looked smooth, had similar RMS. DEC correction was mainly to
>       > one
>       >       > direction.
>       >       >       - DEC balance was slightly off, camera heavy. Is Mach2 DEC sensitive to this? Will the
> guiding/image
>       > be
>       >       > affected?
>       >       >
>       >       >       I dont think any of the above is of particular concern, except DEC balance. Any comment/help is
>       > appreciated.
>       >       >
>       >       >       --
>       >       >       Roland Christen
>       >       >       Astro-Physics
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>
>
>
>
>
>
>
>
>







--
Roland Christen
Astro-Physics


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Kent Kirkley
 

Joe

You said "The U of T had the fortune of getting"
Was U of T, Texas or Tenessee?
If Texas what years were you there?
I was there 1965-69 and also used Fortran punched card programs.
And yes, I used a slide rule (2) in high school, both K&E's.

Kent Kirkley



-----Original Message-----
From: Joe Zeglinski <J.Zeglinski@...>
To: main@ap-gto.groups.io
Sent: Fri, Mar 12, 2021 3:29 pm
Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

    Maybe,  I can somewhat top that,  Don.
 
¬†¬†¬† First year engineering,¬† Fortran punched card programs,¬† on the big fish-bowl machine ‚Äď an awe inspiring IBM-7094, long before the IBM-360,¬† and which was the original IBM-7090 upgraded¬† with something new - a Floating Point Processor.
That was the death knell for the desktop NCR Tabulators. The UofT had the fortune of getting the second IBM-7094 in production,¬† after NASA got theirs for Project Mercury. The latter‚Äôs introduction¬† is portrayed in the recent movie, ‚ÄúComputing Figures‚ÄĚ, which brought back wondrous memories for me.
 
¬†¬†¬† But I preferred using the undergrad machine, an IBM-1620 with a coffin-sized floating point processor,¬† we hung over it to get ourselves warmed up on a cold winters morning, Working for the eelier mentioned prof,¬† even got special permission to actually run it after midnight ‚Äď my first PC, sort of. Loved to turn off the lab room lights, and enjoy all the Neon Hex-code indicators and control panel switch‚Äôs lights flash like a laser show. Wish I had taken a picture. No PC today compares to that thrill and amazing sight, perhaps only beat by the IBM-7094 and IBM-360 light show when running¬† diagnostics.
 
    Last thing I did with one of my dozen or so  basement Honeywell Minicomputers, was to play an originally PDP-8 programmed,  Christmas Carol,  from the RFI noise generated by the mini’s control panel (specifically)  incandescent bulb, (Arithmetic Overflow flip-flop Indicator), flickering  on & off by program as a portable radio tuned to any off-AM-station frequency , crackled melodically, even 10 feet away,  in unison to the carol. Computing Security wasn’t a concept in those early days.
 
¬†¬†¬† ‚ÄúHalcion Days‚ÄĚ ... of computing,¬† when computers were new and lots more fun than debug work, after I taught myself computing,¬† before Computer Science came along,
 
¬†¬†¬† Thanks for bringing back all the shared memories, guys.¬†¬† Now back to my bug-free Pickett ‚Äď wonder why we called its sliding¬† indicator window a ‚ÄúCursor‚ÄĚ, instead of a ‚ÄúMouse‚ÄĚ, since it really worked¬† the same way¬† :-)
 
Joe Z.
 
From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 2:49 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
 
I did my first programing in Fortran with punch cards on an IBM360.
woe be to the person who dropped their program on the way to class!. Sorting a couple hundred punch cards 10 min before class started was stressful!
 
Don Anderson
 
 
On Friday, March 12, 2021, 11:57:15 a.m. MST, Jeffrey Wolff <jmw2800@...> wrote:
 
 
I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school.

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Mach2 - Elongated stars

yanzhe liu
 

I have been using mach1 and 1100 prior to mach2. I knew I changed mount to mach2 in ascom driver.

Let me try again with balanced DEC, as suggested by Roland, to see if the issue is going away.  

On Thu, Mar 11, 2021 at 7:38 AM Ray Gralak <iogroups@...> wrote:
Yanzhe,

> I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated
> 12/29/2018. Maybe I did not enable ASCOM log.

Hmmm... that is not the default. Did you happen to use this computer with another A-P mount in the past?

Since it is probably a small file, please attach that zip file to a post. It's worth checking the settings to see if anything stands out as an incorrect setting.

BTW, can you also provide a dropbox or google drive link to one of the single raw FITS images with the elongated stars? It's important that it is an unprocessed image and not a jpeg or stacked with other images.

Thanks,

-Ray

> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
> Sent: Wednesday, March 10, 2021 10:36 PM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] Mach2 - Elongated stars
>
> Ray,
>
> I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated
> 12/29/2018. Maybe I did not enable ASCOM log.
>
> Yanzhe
>
> On Sun, Mar 7, 2021 at 7:37 PM Ray Gralak <iogroups@...> wrote:
>
>
>       Yanhze,
>
>       > Where is ASCOM driver log? I dont use APCC, I use SGPro.
>
>       The AP V2 ASCOM driver, which you must use with SGPro, comes with a log zipper utility called "AP Log
> Zipper". You should be able to find it from the Windows start menu by typing that name. The utility will grab the log files
> for X number of days in the past. If you can't find it, you probably didn't install it when you installed the AP V2 driver. In
> that case, just reinstall the AP V2 driver and select the option to install it.
>
>       BTW, you can use APCC with SGPro. In fact, it is recommended. An APCC Pro license comes with your
> Mach2 mount, but you must contact A-P to get it.
>
>       -Ray
>
>
>       > -----Original Message-----
>       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       > Sent: Sunday, March 7, 2021 4:19 PM
>       > To: main@ap-gto.groups.io
>       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >
>       > Ray,
>       >
>       > Where is ASCOM driver log? I dont use APCC, I use SGPro.
>       >
>       > Yanzhe
>       >
>       > On Sun, Mar 7, 2021 at 10:45 AM Ray Gralak <iogroups@...> wrote:
>       >
>       >
>       >       Hi Yanzhe,
>       >
>       >       Can you zip and post your PHD2 logs, as well as APCC/AP V2 ASCOM driver logs?
>       >
>       >       There might be something useful there.
>       >
>       >       -Ray
>       >
>       >       > -----Original Message-----
>       >       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       >       > Sent: Sunday, March 7, 2021 10:12 AM
>       >       > To: main@ap-gto.groups.io
>       >       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >       >
>       >       > Roland,
>       >       >
>       >       > I will check my mount serial number later as I just packed everything due to rain forecast.
>       >       >
>       >       > My camera's orientation was 0/180 degree, so I assume top to bottom elongation would be DEC.
>       >       >
>       >       > I dont have any picture of my setup, I just tore it down since it will be rainy this week. My setup is
>       >       > FSQ106+OAG+16803, image scale is 3.5".
>       >       > I was imaging Rosetta Nebula, after it was just past meridian for 2-3 hours.
>       >       >
>       >       > I used PHD2 drift for PA, it reported <5' PA error, I am waiting for polemaster adapter so I can confirm I
> get
>       > good PA
>       >       > next time.
>       >       >
>       >       > DEC was out of balance because my setup was rear end heavy, if it was in balance position then I
> could
>       > not rotate
>       >       > my CCD in all directions. My guess is that the DEC balance was off by less than 1lb. In the next test, I
> can
>       > balance
>       >       > DEC to see if the issue still exists.
>       >       >
>       >       > My suspicion is that if DEC balance is off, then DEC might creep under gravity, even PA is perfect. So
> you
>       > might
>       >       > see DEC continually drift  then gets corrected by PHD2 periodically.
>       >       >
>       >       > Yanzhe
>       >       >
>       >       > On Sun, Mar 7, 2021 at 9:35 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
>       >       >
>       >       >
>       >       >       Couple of questions:
>       >       >
>       >       >
>       >       >       1 - what's the mount's serial number
>       >       >       2 - which axis is the elongation
>       >       >       3 - which direction was the scope pointing (RA-Dec)
>       >       >       4 - what scope and focal length or what is the arc sec per pixel.
>       >       >       5 - do you have a picture of your setup?
>       >       >
>       >       >
>       >       >
>       >       >       One comment about balance - it should be easy for you to completely balance the scope with the
>       > clutches
>       >       > loose. Can you estimate how many lb out of balance your scope is in Dec? Normally i would not think
> this
>       > would
>       >       > have any effect, but doesn't hurt to check this.
>       >       >
>       >       >
>       >       >
>       >       >       Roland Christen
>       >       >       Astro-Physics Inc.
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >       -----Original Message-----
>       >       >       From: yanzhe liu <liuyanzhe@...>
>       >       >       To: main@ap-gto.groups.io
>       >       >       Sent: Sun, Mar 7, 2021 12:44 am
>       >       >       Subject: [ap-gto] Mach2 - Elongated stars
>       >       >
>       >       >
>       >       >       Testing new mach2 for a couple of nights. It works great out of the box and I am very pleased.
>       >       >
>       >       >       One issue bothering me is that I got slightly elongated stars across the entire image (15min Ha sub).
>       >       >       The exact same telescope/CCD were used with another mount and stars were round, I am
> wondering
>       > what I
>       >       > should check (I think there was due to some setup issue, but I could not figure it out).
>       >       >       - Used OAG for guiding, so there should not be any flexure.
>       >       >       - CCD orientation was 0/180 degree. The stars were elongated top to bottom.
>       >       >       -  I did polar alignment with PHD2 drift align. PA error should be < 5'. The field rotation of each sub
> is
>       > ~0.01
>       >       > degree, much larger than the other system (but elongated stars do not look like field rotation, they were
>       > same
>       >       > across the image)
>       >       >       - Both RA and DEC guiding curves looked smooth, had similar RMS. DEC correction was mainly to
>       > one
>       >       > direction.
>       >       >       - DEC balance was slightly off, camera heavy. Is Mach2 DEC sensitive to this? Will the
> guiding/image
>       > be
>       >       > affected?
>       >       >
>       >       >       I dont think any of the above is of particular concern, except DEC balance. Any comment/help is
>       > appreciated.
>       >       >
>       >       >       --
>       >       >       Roland Christen
>       >       >       Astro-Physics
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >
>       >       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>       >
>
>
>
>
>
>
>
>
>







Re: Mach2 - Elongated stars

yanzhe liu
 

Agree, I never had any issue with mach1 and 1100, so I think I must have made a mistake here.


On Thu, Mar 11, 2021 at 12:10 AM Bill Long <bill@...> wrote:
Dude there is something wrong with  your config. I literally cannot get the mount to NOT produce perfect stars. Call me if you are up and need a hand. :) 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of yanzhe liu <liuyanzhe@...>
Sent: Wednesday, March 10, 2021 10:36 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 - Elongated stars
 
Ray,

I am able to run "AP Log Zipper", there are 2 files shown in the app: ap.ini and Setting.apdb, however both were dated 12/29/2018. Maybe I did not enable ASCOM log.

Yanzhe

On Sun, Mar 7, 2021 at 7:37 PM Ray Gralak <iogroups@...> wrote:
Yanhze,

> Where is ASCOM driver log? I dont use APCC, I use SGPro.

The AP V2 ASCOM driver, which you must use with SGPro, comes with a log zipper utility called "AP Log Zipper". You should be able to find it from the Windows start menu by typing that name. The utility will grab the log files for X number of days in the past. If you can't find it, you probably didn't install it when you installed the AP V2 driver. In that case, just reinstall the AP V2 driver and select the option to install it.

BTW, you can use APCC with SGPro. In fact, it is recommended. An APCC Pro license comes with your Mach2 mount, but you must contact A-P to get it.

-Ray


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
> Sent: Sunday, March 7, 2021 4:19 PM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] Mach2 - Elongated stars
>
> Ray,
>
> Where is ASCOM driver log? I dont use APCC, I use SGPro.
>
> Yanzhe
>
> On Sun, Mar 7, 2021 at 10:45 AM Ray Gralak <iogroups@...> wrote:
>
>
>       Hi Yanzhe,
>
>       Can you zip and post your PHD2 logs, as well as APCC/AP V2 ASCOM driver logs?
>
>       There might be something useful there.
>
>       -Ray
>
>       > -----Original Message-----
>       > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of yanzhe liu
>       > Sent: Sunday, March 7, 2021 10:12 AM
>       > To: main@ap-gto.groups.io
>       > Subject: Re: [ap-gto] Mach2 - Elongated stars
>       >
>       > Roland,
>       >
>       > I will check my mount serial number later as I just packed everything due to rain forecast.
>       >
>       > My camera's orientation was 0/180 degree, so I assume top to bottom elongation would be DEC.
>       >
>       > I dont have any picture of my setup, I just tore it down since it will be rainy this week. My setup is
>       > FSQ106+OAG+16803, image scale is 3.5".
>       > I was imaging Rosetta Nebula, after it was just past meridian for 2-3 hours.
>       >
>       > I used PHD2 drift for PA, it reported <5' PA error, I am waiting for polemaster adapter so I can confirm I get
> good PA
>       > next time.
>       >
>       > DEC was out of balance because my setup was rear end heavy, if it was in balance position then I could
> not rotate
>       > my CCD in all directions. My guess is that the DEC balance was off by less than 1lb. In the next test, I can
> balance
>       > DEC to see if the issue still exists.
>       >
>       > My suspicion is that if DEC balance is off, then DEC might creep under gravity, even PA is perfect. So you
> might
>       > see DEC continually drift  then gets corrected by PHD2 periodically.
>       >
>       > Yanzhe
>       >
>       > On Sun, Mar 7, 2021 at 9:35 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
>       >
>       >
>       >       Couple of questions:
>       >
>       >
>       >       1 - what's the mount's serial number
>       >       2 - which axis is the elongation
>       >       3 - which direction was the scope pointing (RA-Dec)
>       >       4 - what scope and focal length or what is the arc sec per pixel.
>       >       5 - do you have a picture of your setup?
>       >
>       >
>       >
>       >       One comment about balance - it should be easy for you to completely balance the scope with the
> clutches
>       > loose. Can you estimate how many lb out of balance your scope is in Dec? Normally i would not think this
> would
>       > have any effect, but doesn't hurt to check this.
>       >
>       >
>       >
>       >       Roland Christen
>       >       Astro-Physics Inc.
>       >
>       >
>       >
>       >
>       >       -----Original Message-----
>       >       From: yanzhe liu <liuyanzhe@...>
>       >       To: main@ap-gto.groups.io
>       >       Sent: Sun, Mar 7, 2021 12:44 am
>       >       Subject: [ap-gto] Mach2 - Elongated stars
>       >
>       >
>       >       Testing new mach2 for a couple of nights. It works great out of the box and I am very pleased.
>       >
>       >       One issue bothering me is that I got slightly elongated stars across the entire image (15min Ha sub).
>       >       The exact same telescope/CCD were used with another mount and stars were round, I am wondering
> what I
>       > should check (I think there was due to some setup issue, but I could not figure it out).
>       >       - Used OAG for guiding, so there should not be any flexure.
>       >       - CCD orientation was 0/180 degree. The stars were elongated top to bottom.
>       >       -  I did polar alignment with PHD2 drift align. PA error should be < 5'. The field rotation of each sub is
> ~0.01
>       > degree, much larger than the other system (but elongated stars do not look like field rotation, they were
> same
>       > across the image)
>       >       - Both RA and DEC guiding curves looked smooth, had similar RMS. DEC correction was mainly to
> one
>       > direction.
>       >       - DEC balance was slightly off, camera heavy. Is Mach2 DEC sensitive to this? Will the guiding/image
> be
>       > affected?
>       >
>       >       I dont think any of the above is of particular concern, except DEC balance. Any comment/help is
> appreciated.
>       >
>       >       --
>       >       Roland Christen
>       >       Astro-Physics
>       >
>       >
>       >
>       >
>       >
>       >
>
>
>
>
>
>
>
>
>







Mach 1

thefamily90 Phillips
 

Been saving up to buy a used Mach1. Should be there by next Wednesday. If any of you new Mach2 owners have a Mach 1 you are willing to sell please contact me via private message/email. If the moderator feels this post is inappropriate please remove.
Thank you.

Jim Phillips
Thefamily90@...

 


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Joe Zeglinski
 

    Maybe,  I can somewhat top that,  Don.
 
¬†¬†¬† First year engineering,¬† Fortran punched card programs,¬† on the big fish-bowl machine ‚Äď an awe inspiring IBM-7094, long before the IBM-360,¬† and which was the original IBM-7090 upgraded¬† with something new - a Floating Point Processor.
That was the death knell for the desktop NCR Tabulators. The UofT had the fortune of getting the second IBM-7094 in production,¬† after NASA got theirs for Project Mercury. The latter‚Äôs introduction¬† is portrayed in the recent movie, ‚ÄúComputing Figures‚ÄĚ, which brought back wondrous memories for me.
 
¬†¬†¬† But I preferred using the undergrad machine, an IBM-1620 with a coffin-sized floating point processor,¬† we hung over it to get ourselves warmed up on a cold winters morning, Working for the eelier mentioned prof,¬† even got special permission to actually run it after midnight ‚Äď my first PC, sort of. Loved to turn off the lab room lights, and enjoy all the Neon Hex-code indicators and control panel switch‚Äôs lights flash like a laser show. Wish I had taken a picture. No PC today compares to that thrill and amazing sight, perhaps only beat by the IBM-7094 and IBM-360 light show when running¬† diagnostics.
 
    Last thing I did with one of my dozen or so  basement Honeywell Minicomputers, was to play an originally PDP-8 programmed,  Christmas Carol,  from the RFI noise generated by the mini’s control panel (specifically)  incandescent bulb, (Arithmetic Overflow flip-flop Indicator), flickering  on & off by program as a portable radio tuned to any off-AM-station frequency , crackled melodically, even 10 feet away,  in unison to the carol. Computing Security wasn’t a concept in those early days.
 
¬†¬†¬† ‚ÄúHalcion Days‚ÄĚ ... of computing,¬† when computers were new and lots more fun than debug work, after I taught myself computing,¬† before Computer Science came along,
 
¬†¬†¬† Thanks for bringing back all the shared memories, guys.¬†¬† Now back to my bug-free Pickett ‚Äď wonder why we called its sliding¬† indicator window a ‚ÄúCursor‚ÄĚ, instead of a ‚ÄúMouse‚ÄĚ, since it really worked¬† the same way¬† :-)
 
Joe Z.
 

From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 2:49 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)
 
I did my first programing in Fortran with punch cards on an IBM360.
woe be to the person who dropped their program on the way to class!. Sorting a couple hundred punch cards 10 min before class started was stressful!
 
Don Anderson
 
 
On Friday, March 12, 2021, 11:57:15 a.m. MST, Jeffrey Wolff <jmw2800@...> wrote:
 
 
I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school.

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Don Anderson
 

In hind sight, I found the girls turned and went the other way when we came down the hall. I wonder whyEmoji

Don Anderson


On Friday, March 12, 2021, 11:56:39 a.m. MST, ap@... <ap@...> wrote:


So I am months away from getting my AP mount and thought I would have nothing to contribute to this forum until today.  But here it is.

 

And unlike others, you can see the scars from use on my case.  The HP35 did not come into availability until something like my 3rd year.

 

I will say, however, that I did not find it exactly a chick magnet.  I went to UVa, and it was the very early days of women in the undergraduate program, so they were few enough, but even fewer in the Engineering school.  Even so, I saw no indication the slide rule had any attractive force.


Maybe it was the yellow color.  Did the white work better?

 

Of course, being in the Engineer school the women there had slide rules as well, so that may have affected any behavioral observations.

 

Linwood

 

PS. Isn’t it odd that we all probably had a dozen or more calculators in the interim and I suspect rarely saved them when replaced, but many of us saved the slide rule.  I wonder if my son would even know what it was if he saw it.

 

 


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Don Anderson
 

I did my first programing in Fortran with punch cards on an IBM360. 
woe be to the person who dropped their program on the way to class!. Sorting a couple hundred punch cards 10 min before class started was stressful!

Don Anderson


On Friday, March 12, 2021, 11:57:15 a.m. MST, Jeffrey Wolff <jmw2800@...> wrote:


I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school. 

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Jeffrey Wolff
 

I had to use a slide rule in high school. I remember my Dad buying a basic four function calculator when I was finishing high school. 

I learned about HP calculator's in college and bought 3 different programmable calculators by the time I graduated. My first drafting class was using paper, pencils and a bunch of tools to make lines and circles. Eventually did AutoCAD and digital circuit design.

Started programming computers using punch cards. Eventually got my masters in Computer Science and spent my working life running networks, switches, routers, firewalls, wireless, fiber optics and other stuff to bring the Internet to everybody at the university. Been working at my employer since 1989. We went from 1.5 megabits/second for the whole state higher education network to a pair of 100 gigabit/second Internet2 circuits now.


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

ap@CaptivePhotons.com
 

So I am months away from getting my AP mount and thought I would have nothing to contribute to this forum until today.  But here it is.

 

And unlike others, you can see the scars from use on my case.  The HP35 did not come into availability until something like my 3rd year.

 

I will say, however, that I did not find it exactly a chick magnet.  I went to UVa, and it was the very early days of women in the undergraduate program, so they were few enough, but even fewer in the Engineering school.  Even so, I saw no indication the slide rule had any attractive force.


Maybe it was the yellow color.  Did the white work better?

 

Of course, being in the Engineer school the women there had slide rules as well, so that may have affected any behavioral observations.

 

Linwood

 

PS. Isn’t it odd that we all probably had a dozen or more calculators in the interim and I suspect rarely saved them when replaced, but many of us saved the slide rule.  I wonder if my son would even know what it was if he saw it.

 

 


Re: Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Don Anderson
 

Yes Joe
anyone under 50 (probably 60) has no idea what were talking about. Think about the things that were built ie Hoover Dam Titanic etc that were all designed using hand calculations and slide rules. What most people don't realize about slide rules was one had to have a good idea what the final answer was while doing the calcs in order to carry the decimal point through the calculation process.

Don Anderson


On Friday, March 12, 2021, 10:28:54 a.m. MST, Joe Zeglinski <j.zeglinski@...> wrote:


Don
 
¬†¬†¬† Love it ‚Äď dem‚Äô was the days of real computing, unlimited memory, and engineering hard drive.
Yours looks like the famous, highly desired ...¬† K & E Log-Log-DeciTrig-Duplex¬† ‚Äúslip-stick‚ÄĚ. Engineers weren‚Äôt really entitled to own one of those, unless they could say that quickly,¬† with a drink in their hand.
 
¬†¬†¬† Way cool Pickett man myself ‚Äď its case,¬† almost like having it slip into¬† ‚ÄúCorinthian leather‚ÄĚ, but probably just cowhide :-)
 
¬†¬†¬† K&E rare Bamboo style was fine ... but Pickett‚Äôs unique engineering design with its specially chosen Green spectral colour, for easy visibility with bleary eyes when cramming¬† in the middle of the night, Magnesium alloy with tiny ball bearings at the slide‚Äôs ends for high speed computing ‚Äď engineering heaven. Works on both east and west side of its cursor,¬† easily finds home position on reboot, even works inverted for the log-log and exponential functions ... and BEST of all ...¬† never needs¬† AeroShell-33 relubrication :-)
 
¬†¬†¬† However, my Radio Astronomy engineering prof, used his Abacus, to prove I didn‚Äôt need to always run his 3C-273 strip chart data through the PDP-11. I think his was an 8-Bead, (later called a Byte),¬† ‚Äúflip-stick‚ÄĚ calculator.
 
Joe Z.
 
 
From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 11:17 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600
 
You mean like this?
 
Don Anderson
 
On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:
 
Don,

 They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 Regards,

 George

 George Whitney

Astro-Physics, Inc.

 


Slide Rules and Slipsticks - in the 1960's B.C. - i.e. (Before Computers)

Joe Zeglinski
 

Don
 
¬†¬†¬† Love it ‚Äď dem‚Äô was the days of real computing, unlimited memory, and engineering hard drive.
Yours looks like the famous, highly desired ...¬† K & E Log-Log-DeciTrig-Duplex¬† ‚Äúslip-stick‚ÄĚ. Engineers weren‚Äôt really entitled to own one of those, unless they could say that quickly,¬† with a drink in their hand.
 
¬†¬†¬† Way cool Pickett man myself ‚Äď its case,¬† almost like having it slip into¬† ‚ÄúCorinthian leather‚ÄĚ, but probably just cowhide :-)
 
¬†¬†¬† K&E rare Bamboo style was fine ... but Pickett‚Äôs unique engineering design with its specially chosen Green spectral colour, for easy visibility with bleary eyes when cramming¬† in the middle of the night, Magnesium alloy with tiny ball bearings at the slide‚Äôs ends for high speed computing ‚Äď engineering heaven. Works on both east and west side of its cursor,¬† easily finds home position on reboot, even works inverted for the log-log and exponential functions ... and BEST of all ...¬† never needs¬† AeroShell-33 relubrication :-)
 
¬†¬†¬† However, my Radio Astronomy engineering prof, used his Abacus, to prove I didn‚Äôt need to always run his 3C-273 strip chart data through the PDP-11. I think his was an 8-Bead, (later called a Byte),¬† ‚Äúflip-stick‚ÄĚ calculator.
 
Joe Z.
 
 

From: Don Anderson via groups.io
Sent: Friday, March 12, 2021 11:17 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600
 
You mean like this?
 
Don Anderson
 
On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:
 
Don,

 They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 Regards,

 George

 George Whitney

Astro-Physics, Inc.

 


Re: Quick Release Gearbox Modification for Older AP1600

Don Anderson
 

Yes the good old days when one had lots of hair with color!Emoji

Don Anderson


On Friday, March 12, 2021, 09:32:20 a.m. MST, George <george@...> wrote:


Don,

 

<G>   I am VERY impressed.    Oh the memories…just like the one that I had.    Sigh…

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Friday, March 12, 2021 10:18 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

You mean like this?

 

Don Anderson

 

 

On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:

 

 

Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I‚Äôd sure like to get the AP gear-release retrofit kit their ‚Äúnew‚ÄĚ mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

Bob
 

Marj... I think most of us realize it wont be a cookie cutter mod, but well worth the effort and cost.  Opposed to the cost of a new mount and of course the biggest advantage... a very accurate balance which would alleviate an aweful lot of headaches!...Ive been asking for several years about this possible mod....  sign me up as well.... pleeeeaaassseee!...lol


On Mar 12, 2021, at 10:15 AM, Marj Christen <marj@...> wrote:

ÔĽŅ

Jack and all,

 

The swap out is not an easy one, which is one of the reasons that we have not offered it yet. Yes, many of the components can be reused (motor assembly, worm gear, spur gears), which will reduce the cost. However, it is likely that the mounts will need to return here in order to swap out the components and to ensure accurate assembly.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Jack Huerkamp
Sent: Friday, March 12, 2021 7:41 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Roland, will this be a simple swap out for current AP1600 owners.  I assume that the existing worm gear would be retained and moved to the new housing for the quick release system.  Any estimate on price and is there a waiting list for this retrofit?

Jack Huerkamp


Re: Quick Release Gearbox Modification for Older AP1600

George
 

Don,

 

<G>   I am VERY impressed.    Oh the memories…just like the one that I had.    Sigh…

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Friday, March 12, 2021 10:18 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

You mean like this?

 

Don Anderson

 

 

On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:

 

 

Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I‚Äôd sure like to get the AP gear-release retrofit kit their ‚Äúnew‚ÄĚ mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics


Re: Quick Release Gearbox Modification for Older AP1600

Don Anderson
 

You mean like this?

Don Anderson


On Friday, March 12, 2021, 07:57:25 a.m. MST, George <george@...> wrote:


Don,

 

They were only cool if they were full.   <G>    …but real cool was the slide rule slung from your belt in its case!    Talk about a chick magnet…ah, the old days!

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, March 11, 2021 6:13 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Pen protectors! Wow that goes back a long ways. i used to wear one every day when I was a TV Technician! Back then I thought they were cool.

 

Don Anderson

 

 

On Thursday, March 11, 2021, 12:43:08 p.m. MST, George <george@...> wrote:

 

 

Rolando,

 

I thought everyone carried a dowel rod in their pen protector…oh, wait…I guess that’s a pencil.     <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Thursday, March 11, 2021 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woops, you beat me to it, George. I call it the pencil balance (i don't always have a dowel rod laying around).

 

Rolando

 

 

 

-----Original Message-----
From: George <george@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 1:00 pm
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

Guys,

 

Balance side-to-side setups with a dowel rod on a table and save yourselves the headaches.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Woody Schlom
Sent: Thursday, March 11, 2021 12:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Jack,

 

I forgot that you have a side-by-side setup.  Those are a bear to balance.  As I recall, it took me nearly an hour to get my side-by-side solar setup properly balanced in all directions and axis the first time.  And your scopes are so much larger and heavier.

 

But at least the meter is helping.

 

All that said, if I could justify the cost, I‚Äôd sure like to get the AP gear-release retrofit kit their ‚Äúnew‚ÄĚ mounts have.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Thursday, March 11, 2021 5:53 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Quick Release Gearbox Modification for Older AP1600

 

Woody,

I installed the PowerWerx meter in line with the power supply yesterday and tested balance. Al was fine in RA with equal current draw while moving the mount slowly.  However, when I set the scopes parallel to the ground and moved the mount North-South, the current draw to elevate the scopes was higher than that to lower the scopes.  So I need to correct the balance on the OTAs riding on the mount.  And since I have parallel OTAs, I not only need to check balance on the scopes in the North-South direction, I also have to adjust the parallel dovetail East-West to make sure all imbalance is accounted for.

Thanks for reminding me about the meter.

Jack Huerkamp


--
Roland Christen
Astro-Physics

5361 - 5380 of 82280