Date   

Re: Low power experience

Dean Jacobsen
 

Excellent!
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/ 
Amateur Radio Call Sign - W6DBJ


Re: Mach2 - Elongated stars

Bill Long
 

I did notice a huge difference in using the clutches to balance versus my Mach 1 I had. On my Mach 1 the DEC axis was always really hard to feel out in terms of balance. The Mach 2 is very much like it's bigger brother the 1100. Easy to balance and the clutch knobs on the Mach 2 are really well placed and easy to work with. 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Thursday, March 11, 2021 7:35 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 - Elongated stars
 
hello Yanzhe,

I have done some more digging and testing with regard to your guiding results. You had said that your Dec axis is not balanced. Unbalance puts strain on the worm teeth which increases friction and can inhibit smooth motion at the sub-arc sec level. For example, a 1 lb unbalance at 30 inches distance produces 10lb of pressure on the worm teeth. The resulting friction is then 10 times what it would be if the axis was properly balanced. High static friction on the Dec axis causes stick-slip motion as the axis is being nudged along in small steps during a typical guiding run. 

In RA the unbalance is not as critical because the worm is constantly turning, and the dynamic friction is much lower than the static friction of the Dec axis.

We made the Mach2 with clutches that can be loosened to achieve good balance. If you fully loosen the Dec knobs with the mount in Park 4 or 5 position, it should be balanced enough to not move on its own. It should feel light in both directions and stay put when you let go of the scope. Try to get at least this much balance on your rig, and you will see that it will guide exceptionally well and give you the performance that you want.

Rolando



-----Original Message-----
From: yanzhe liu <liuyanzhe@...>
To: main@ap-gto.groups.io
Sent: Thu, Mar 11, 2021 12:36 am
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: Low power experience

Roland Christen
 

Once you hit 11 volts the motors will start to complain and make strange noises during a slew. We will change the parameters for operation at 12 volts with a drooping battery so that the motors will still slew properly and not put as much load on the battery.

Rolando

-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 9:34 am
Subject: Re: [ap-gto] Low power experience

Awesome. I always love new updates and things to play with. The battery was really low. I think it's output was 11v when I pulled the power and threw it on the 10A Bioenno charger.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Thursday, March 11, 2021 7:16 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Low power experience
 
I have looked at the battery performance of the Mach2 and I believe we have a software fix for it. Stay tuned and we will have some new software for you to load so that you can run off a low charge battery.

Rolando

-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 8:31 am
Subject: [ap-gto] Low power experience

So like a buffoon I didn't have full charge on my battery but I let it run it's course as much as it could. Thankfully it made it through the imaging for the evening with no problems.

Hours later when I woke from my slumber, the battery was quite low. I tested issuing some slews before throwing the battery on the charger and noticed it never threw a low voltage error at all. Only motor stall was thrown (en masse, spamming the APCC error dialog). 

Previously, if my mount had low power it error throw that, turn the LED yellow, and stop. The Mach 2 behavior is quite different. Probably worth looking at.

Other than that one test, the Mach 2 was a beast. Awesome guided, unguided, and it really takes to complements well. 😁

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Mach2 - Elongated stars

Ray Gralak
 

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@...> 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

Roland Christen
 

hello Yanzhe,

I have done some more digging and testing with regard to your guiding results. You had said that your Dec axis is not balanced. Unbalance puts strain on the worm teeth which increases friction and can inhibit smooth motion at the sub-arc sec level. For example, a 1 lb unbalance at 30 inches distance produces 10lb of pressure on the worm teeth. The resulting friction is then 10 times what it would be if the axis was properly balanced. High static friction on the Dec axis causes stick-slip motion as the axis is being nudged along in small steps during a typical guiding run. 

In RA the unbalance is not as critical because the worm is constantly turning, and the dynamic friction is much lower than the static friction of the Dec axis.

We made the Mach2 with clutches that can be loosened to achieve good balance. If you fully loosen the Dec knobs with the mount in Park 4 or 5 position, it should be balanced enough to not move on its own. It should feel light in both directions and stay put when you let go of the scope. Try to get at least this much balance on your rig, and you will see that it will guide exceptionally well and give you the performance that you want.

Rolando



-----Original Message-----
From: yanzhe liu <liuyanzhe@...>
To: main@ap-gto.groups.io
Sent: Thu, Mar 11, 2021 12:36 am
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: Low power experience

Bill Long
 

Awesome. I always love new updates and things to play with. The battery was really low. I think it's output was 11v when I pulled the power and threw it on the 10A Bioenno charger.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Thursday, March 11, 2021 7:16 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Low power experience
 
I have looked at the battery performance of the Mach2 and I believe we have a software fix for it. Stay tuned and we will have some new software for you to load so that you can run off a low charge battery.

Rolando

-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 8:31 am
Subject: [ap-gto] Low power experience

So like a buffoon I didn't have full charge on my battery but I let it run it's course as much as it could. Thankfully it made it through the imaging for the evening with no problems.

Hours later when I woke from my slumber, the battery was quite low. I tested issuing some slews before throwing the battery on the charger and noticed it never threw a low voltage error at all. Only motor stall was thrown (en masse, spamming the APCC error dialog). 

Previously, if my mount had low power it error throw that, turn the LED yellow, and stop. The Mach 2 behavior is quite different. Probably worth looking at.

Other than that one test, the Mach 2 was a beast. Awesome guided, unguided, and it really takes to complements well. 😁

--
Roland Christen
Astro-Physics


Re: Low power experience

Roland Christen
 

I have looked at the battery performance of the Mach2 and I believe we have a software fix for it. Stay tuned and we will have some new software for you to load so that you can run off a low charge battery.

Rolando

-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Mar 11, 2021 8:31 am
Subject: [ap-gto] Low power experience

So like a buffoon I didn't have full charge on my battery but I let it run it's course as much as it could. Thankfully it made it through the imaging for the evening with no problems.

Hours later when I woke from my slumber, the battery was quite low. I tested issuing some slews before throwing the battery on the charger and noticed it never threw a low voltage error at all. Only motor stall was thrown (en masse, spamming the APCC error dialog). 

Previously, if my mount had low power it error throw that, turn the LED yellow, and stop. The Mach 2 behavior is quite different. Probably worth looking at.

Other than that one test, the Mach 2 was a beast. Awesome guided, unguided, and it really takes to complements well. 😁

--
Roland Christen
Astro-Physics


Re: Mach 2 First Impressions (Quick Post)

Bill Long
 

The guided performance was great for long extended periods. Seeing last night was maybe 2/5. Not all that great. I did some wide field m106 without the guider running and the frames were excellent. In my experience with a model and encoders the broadband data is usually gravy.

My jokes about the 1100 should be called out again. It works perfectly, and the Mach 2 is it's excellent little brother!


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Cheng-Yang Tan via groups.io <cytan299@...>
Sent: Thursday, March 11, 2021 6:35 AM
To: AP-GTO Groups. io <ap-gto@groups.io>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach 2 First Impressions (Quick Post)
 
Hi Bill,
   You said you were joking about the AP1100, I certainly hope so :)

   It's really good to get total rms error below 0.3". But from my experience, I can get this type of error both with my Mach1 and AP1100AE, but that's only for short periods for my Bortle 6-7 site, like for about 15 min. 

  Do you consistently get < 0.3" at your site?

  And I did swap my AP130GT focuser with a NiteCrawle for zero backlash auto-focusing. I also need the camera to match images from the same object taken on different nights (which can be 1 year apart :) ). I need to do this because I set up every night and the image frames can be 5 deg rotated w.r.t. images from the first night.

cytan

On Thursday, March 11, 2021, 12:47:51 AM CST, Bill Long <bill@...> wrote:


Bill Long has shared a OneDrive file with you. To view it, click the link below.
I have more work to do, but here is a PHD2 graph in its entirety from the Mach 2, 5 min Lum sub. No model, just PHD2 calibration. 

Sub here:


Note that there is a little tilt in this, not much, but was part of the test. I was testing whether or not the AP130GTX focuser was causing any sag in the train with the following gear:

FLI PL16803
FLI CFW5-7
7 x Chroma LRGB + SHO 3nm
Optec Sagitta OAG
Astro-Physics 133FF for GTX

My findings here show that the NiteCrawler focuser shows the exact same tilt pattern that the AP 130 GTX focuser shows. In both cases it is extremely minor and most imagers would not even know it was there.

That is an incredibly heavy imaging system and the GTX focuser was all the part that the NiteCrawler was. So, if you have a GTX, dont bother replacing your focuser. 🙂 

More data to come, as I have a model going, but so far I am impressed. My 1100 with encoders does not perform as well as this Mach 2. Maybe I should send it in? 😳 

-Bill



Re: Mach 2 First Impressions (Quick Post)

Cheng-Yang Tan
 

Hi Bill,
   You said you were joking about the AP1100, I certainly hope so :)

   It's really good to get total rms error below 0.3". But from my experience, I can get this type of error both with my Mach1 and AP1100AE, but that's only for short periods for my Bortle 6-7 site, like for about 15 min. 

  Do you consistently get < 0.3" at your site?

  And I did swap my AP130GT focuser with a NiteCrawle for zero backlash auto-focusing. I also need the camera to match images from the same object taken on different nights (which can be 1 year apart :) ). I need to do this because I set up every night and the image frames can be 5 deg rotated w.r.t. images from the first night.

cytan

On Thursday, March 11, 2021, 12:47:51 AM CST, Bill Long <bill@...> wrote:


Bill Long has shared a OneDrive file with you. To view it, click the link below.
I have more work to do, but here is a PHD2 graph in its entirety from the Mach 2, 5 min Lum sub. No model, just PHD2 calibration. 

Sub here:


Note that there is a little tilt in this, not much, but was part of the test. I was testing whether or not the AP130GTX focuser was causing any sag in the train with the following gear:

FLI PL16803
FLI CFW5-7
7 x Chroma LRGB + SHO 3nm
Optec Sagitta OAG
Astro-Physics 133FF for GTX

My findings here show that the NiteCrawler focuser shows the exact same tilt pattern that the AP 130 GTX focuser shows. In both cases it is extremely minor and most imagers would not even know it was there.

That is an incredibly heavy imaging system and the GTX focuser was all the part that the NiteCrawler was. So, if you have a GTX, dont bother replacing your focuser. 🙂 

More data to come, as I have a model going, but so far I am impressed. My 1100 with encoders does not perform as well as this Mach 2. Maybe I should send it in? 😳 

-Bill



Low power experience

Bill Long
 

So like a buffoon I didn't have full charge on my battery but I let it run it's course as much as it could. Thankfully it made it through the imaging for the evening with no problems.

Hours later when I woke from my slumber, the battery was quite low. I tested issuing some slews before throwing the battery on the charger and noticed it never threw a low voltage error at all. Only motor stall was thrown (en masse, spamming the APCC error dialog). 

Previously, if my mount had low power it error throw that, turn the LED yellow, and stop. The Mach 2 behavior is quite different. Probably worth looking at.

Other than that one test, the Mach 2 was a beast. Awesome guided, unguided, and it really takes to complements well. 😁


Re: Mach 2 First Impressions (Quick Post)

Bill Long
 

Sorry I was just being funny with that comment.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Edward Beshore via groups.io <ebeshore@...>
Sent: Thursday, March 11, 2021 5:34 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach 2 First Impressions (Quick Post)
 
Hi Bill - Impressive stats on Mach 2. You are concerned about your 1100, what is its performance like with a similar setup?

Ed


Re: Quick Release Gearbox Modification for Older AP1600

Jack Huerkamp
 

Woody,

When I started this thread, I was hoping someone from AP would chime in about if or when a retrofit for the quick release gearboxes would be made available for my AP1600.  I assume that that will not become a reality and I will have to live with what I have.

Jack


Re: Quick Release Gearbox Modification for Older AP1600

Jack Huerkamp
 

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


Re: Mach 2 First Impressions (Quick Post)

Edward Beshore
 

Hi Bill - Impressive stats on Mach 2. You are concerned about your 1100, what is its performance like with a similar setup?

Ed


Re: Mach 2 First Impressions (Quick Post)

Bill Long
 

When the quality of your focus frames (admittedly on a very large 16803 chip) are the exact same, at 5 mins as they are at 5 seconds.... you know you have something great on your hands.

My 1100 cannot do this. Why that is, I am now perplexed. 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Bill Long <bill@...>
Sent: Thursday, March 11, 2021 12:09 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach 2 First Impressions (Quick Post)
 
I clearly need to send my 1100 in for repair or something. This Mach 2 is killing it. Keep in mind, my 1100 has AE as well, and the Mach 2 is shredding it like lettuce. 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Bill Long <bill@...>
Sent: Wednesday, March 10, 2021 10:47 PM
To: AP-GTO Groups.io <ap-gto@groups.io>
Subject: [ap-gto] Mach 2 First Impressions (Quick Post)
 
I have more work to do, but here is a PHD2 graph in its entirety from the Mach 2, 5 min Lum sub. No model, just PHD2 calibration. 

Sub here:


Note that there is a little tilt in this, not much, but was part of the test. I was testing whether or not the AP130GTX focuser was causing any sag in the train with the following gear:

FLI PL16803
FLI CFW5-7
7 x Chroma LRGB + SHO 3nm
Optec Sagitta OAG
Astro-Physics 133FF for GTX

My findings here show that the NiteCrawler focuser shows the exact same tilt pattern that the AP 130 GTX focuser shows. In both cases it is extremely minor and most imagers would not even know it was there.

That is an incredibly heavy imaging system and the GTX focuser was all the part that the NiteCrawler was. So, if you have a GTX, dont bother replacing your focuser. 🙂 

More data to come, as I have a model going, but so far I am impressed. My 1100 with encoders does not perform as well as this Mach 2. Maybe I should send it in? 😳 

-Bill



Re: Mach2 - Elongated stars

Bill Long
 

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
>       >
>       >
>       >
>       >
>       >
>       >
>
>
>
>
>
>
>
>
>







Re: Mach 2 First Impressions (Quick Post)

Bill Long
 

I clearly need to send my 1100 in for repair or something. This Mach 2 is killing it. Keep in mind, my 1100 has AE as well, and the Mach 2 is shredding it like lettuce. 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Bill Long <bill@...>
Sent: Wednesday, March 10, 2021 10:47 PM
To: AP-GTO Groups.io <ap-gto@groups.io>
Subject: [ap-gto] Mach 2 First Impressions (Quick Post)
 
I have more work to do, but here is a PHD2 graph in its entirety from the Mach 2, 5 min Lum sub. No model, just PHD2 calibration. 

Sub here:


Note that there is a little tilt in this, not much, but was part of the test. I was testing whether or not the AP130GTX focuser was causing any sag in the train with the following gear:

FLI PL16803
FLI CFW5-7
7 x Chroma LRGB + SHO 3nm
Optec Sagitta OAG
Astro-Physics 133FF for GTX

My findings here show that the NiteCrawler focuser shows the exact same tilt pattern that the AP 130 GTX focuser shows. In both cases it is extremely minor and most imagers would not even know it was there.

That is an incredibly heavy imaging system and the GTX focuser was all the part that the NiteCrawler was. So, if you have a GTX, dont bother replacing your focuser. 🙂 

More data to come, as I have a model going, but so far I am impressed. My 1100 with encoders does not perform as well as this Mach 2. Maybe I should send it in? 😳 

-Bill



Re: Mach 2 First Impressions (Quick Post)

Bill Long
 

Model running now and imaging unguided and frames are just as good as the guided ones. No change, because there really isnt anything to correct reactively. The 16803 chip is at home on this GTX with the field flattener! 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Bill Long <bill@...>
Sent: Wednesday, March 10, 2021 10:47 PM
To: AP-GTO Groups.io <ap-gto@groups.io>
Subject: [ap-gto] Mach 2 First Impressions (Quick Post)
 
I have more work to do, but here is a PHD2 graph in its entirety from the Mach 2, 5 min Lum sub. No model, just PHD2 calibration. 

Sub here:


Note that there is a little tilt in this, not much, but was part of the test. I was testing whether or not the AP130GTX focuser was causing any sag in the train with the following gear:

FLI PL16803
FLI CFW5-7
7 x Chroma LRGB + SHO 3nm
Optec Sagitta OAG
Astro-Physics 133FF for GTX

My findings here show that the NiteCrawler focuser shows the exact same tilt pattern that the AP 130 GTX focuser shows. In both cases it is extremely minor and most imagers would not even know it was there.

That is an incredibly heavy imaging system and the GTX focuser was all the part that the NiteCrawler was. So, if you have a GTX, dont bother replacing your focuser. 🙂 

More data to come, as I have a model going, but so far I am impressed. My 1100 with encoders does not perform as well as this Mach 2. Maybe I should send it in? 😳 

-Bill



Re: counterweight up slews in APPC Pro with Sequence Generator Pro

R Botero
 

Duncan

I am not a user of SGP but have been using APCC CW up limits consistently for imaging for years. Firstly with MaxIM through MaxPilote’s automation and over the last 3 years exclusively with Voyager. I only have my East limits ticked (somehow). 

Roberto


Mach 2 First Impressions (Quick Post)

Bill Long
 

Bill Long has shared a OneDrive file with you. To view it, click the link below.
I have more work to do, but here is a PHD2 graph in its entirety from the Mach 2, 5 min Lum sub. No model, just PHD2 calibration. 

Sub here:


Note that there is a little tilt in this, not much, but was part of the test. I was testing whether or not the AP130GTX focuser was causing any sag in the train with the following gear:

FLI PL16803
FLI CFW5-7
7 x Chroma LRGB + SHO 3nm
Optec Sagitta OAG
Astro-Physics 133FF for GTX

My findings here show that the NiteCrawler focuser shows the exact same tilt pattern that the AP 130 GTX focuser shows. In both cases it is extremely minor and most imagers would not even know it was there.

That is an incredibly heavy imaging system and the GTX focuser was all the part that the NiteCrawler was. So, if you have a GTX, dont bother replacing your focuser. 🙂 

More data to come, as I have a model going, but so far I am impressed. My 1100 with encoders does not perform as well as this Mach 2. Maybe I should send it in? 😳 

-Bill


11161 - 11180 of 88034