Date   

Re: How to Raise AP1600 Height

Jack Huerkamp
 

Robert,

I will get a roll of the Safety Tape.  I remember seeing it demonstrated in an episode of The Big Bang Theory where Sheldon was demonstrating the safety procedures in his and Leonard's apartment.  Now that I know what to look for, I will get some.

As far as the dual lifting column, I built it originally after seeing one my friend had erected in his observatory.  He had a single column with 1000 Newton (225#) thrust.  And he had it installed with the long dimension in the North-South direction.  When he had the column at maximum height with his CGE PRO and Meade 14" SCT on top, it did tend to have some flex in the East-West direction.  I decided to purchase two of the 1000 Newton columns, mount them parallel to each other with the long dimenseion in the East-West axis, and I started with a CGE PRO on top of the lifting columns.  The 450# thrust capacity was fine initially.  But the mount got replaced for the AP1600, I changed scopes from a single C11 to a MallinCam VRC-10 riding parallel to a Lunt 152.  And ocassionally I added an additional scope on top of the Lunt.  With my total load approaching 550#, I still was successful at using the dual 1000 Newton columns, but I ended up ordering a set of 2500 Newton lifting columns and installed them at the end of 2019.  With over 1100# of thrust available, I now have a nice safety factor and have had no issues with them.


Re: How to Raise AP1600 Height

Jack Huerkamp
 

Roland,

I have a big roll of the large perforated bubble wrap and I will try placing some around the weights.  I hate hiding the beauty of the great machining; but my head will appreciate the bubble wrap more.


Re: How to Raise AP1600 Height

David Albers
 

The glow in the dark tape that I use stays effective most of the night.  While I have not stayed awake from dusk to dawn to be exact in the actual number of hours, I can attest to at least 6-8 hours of effectiveness.



From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Joe Zeglinski <J.Zeglinski@...>
Sent: Friday, March 20, 2020 11:22 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] How to Raise AP1600 Height
 
Had to ask ...
 
    How does GLOW Tape work in the dark, around the scope which has been imaging?
Do you recharge the strip with a flashlight, every so often, such as between exposures?
 
    Otherwise, maybe a battery operated (or wired to a USB port on the mount),  flashing LED taped to the “counterweight bar safety stop”. Same idea as the red lights atop tall buildings/towers near airports.
 
    Since this has been an astronomer’s hazard for many decades, maybe AP could design a new Safety Stop, with a built-in or affixed (coin) battery holder and a flashing,  LED-lighted fibre optic (annular) ring around its edge. One could probably rig this up to an existing safety stop without much difficulty, using PC cabinet,  glow-fibre optics kits from any gaming PC store.
 
    Then we wouldn’t need to keep recharging the Glow Tape.
 
Just a thought,
Joe Z.
 
From: John A. Sillasen
Sent: Friday, March 20, 2020 1:13 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] How to Raise AP1600 Height
 
Glow tape is a great idea in addition to your wanting to raise everything with a pier extension.  I use both on my Mach 1, although I never considered putting the tape on the CounterWeights.  Definitely going to do that now that it's been brought up here.

I put the glow tape and it does have a tiny green tinge to a beige/white appearance in the light.  I put it on my Eagle Pier legs with the extra extension. I also have a Musicians Friend practice stool. Its solid black steel with a movable seat in slots in the steel. Very easy to miss in the dark. I went to sit back down on it after being just too close to the CounterWeights and shaft at Cherry Springs State Park last year. Missed the chair completely and ended up on my butt!  It was past midnight and the skies were starting to go right after that so I decided to pack it in as I knew I was going to be sore in the morning!

Definitely going to put that tape on each CounterWeight!  Thanks for the tip!
 
My ATS Portable Pier for my 1100 is all white so the tape won't be as obvious but still going to do it - definitely on the CounterWeights as well.
 
John A. Sillasen
 
 


Re: APCC rate settings

Ray Gralak
 

No connection is required.

You're computer/browser must be able to access https://www.siriusimaging.com.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Konstantin von
Sent: Friday, March 20, 2020 8:16 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC rate settings

Hi Ray,

I ran APCC Pro 1.8.0.5. When I check for updates I get the answer No updates to APCC are available. Do I have
to be connected to a mount?

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476


Am 20.03.2020 um 05:32 schrieb Ray Gralak <groups3@gralak.com>:

Hi Brian,

When you run APCC it will indicate a new version is available in the title. Then from APCC's help menu
you can use Check for updates to get the download link.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com <https://www.ccdware.com/>
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver




-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Thursday, March 19, 2020 8:39 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC rate settings

Ray where can we download this latest version?

AP site only has link to 1.8.0.5 right now

thanks -Brian

On Thu, Mar 19, 2020 at 8:21 PM Ray Gralak <groups3@gralak.com> wrote:


> Running APPC 1.8.0.4 with GTO4 on my Mach1 it appears there are only four rate settings now;
formerly
there
> were several more?

That was fixed in 1.8.0.8/9.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Peter Bresler via
Groups.Io
> Sent: Thursday, March 19, 2020 8:11 PM
> To: main@ap-gto.groups.io
> Subject: [ap-gto] APCC rate settings
>
> Running APPC 1.8.0.4 with GTO4 on my Mach1 it appears there are only four rate settings now;
formerly
there
> were several more?
>








--

Brian



Brian Valente
portfolio brianvalentephotography.com <http://brianvalentephotography.com/>
<http://brianvalentephotography.com <http://brianvalentephotography.com/> >









Re: How to Raise AP1600 Height

Joe Zeglinski
 

Had to ask ...
 
    How does GLOW Tape work in the dark, around the scope which has been imaging?
Do you recharge the strip with a flashlight, every so often, such as between exposures?
 
    Otherwise, maybe a battery operated (or wired to a USB port on the mount),  flashing LED taped to the “counterweight bar safety stop”. Same idea as the red lights atop tall buildings/towers near airports.
 
    Since this has been an astronomer’s hazard for many decades, maybe AP could design a new Safety Stop, with a built-in or affixed (coin) battery holder and a flashing,  LED-lighted fibre optic (annular) ring around its edge. One could probably rig this up to an existing safety stop without much difficulty, using PC cabinet,  glow-fibre optics kits from any gaming PC store.
 
    Then we wouldn’t need to keep recharging the Glow Tape.
 
Just a thought,
Joe Z.
 

From: John A. Sillasen
Sent: Friday, March 20, 2020 1:13 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] How to Raise AP1600 Height
 
Glow tape is a great idea in addition to your wanting to raise everything with a pier extension.  I use both on my Mach 1, although I never considered putting the tape on the CounterWeights.  Definitely going to do that now that it's been brought up here.

I put the glow tape and it does have a tiny green tinge to a beige/white appearance in the light.  I put it on my Eagle Pier legs with the extra extension. I also have a Musicians Friend practice stool. Its solid black steel with a movable seat in slots in the steel. Very easy to miss in the dark. I went to sit back down on it after being just too close to the CounterWeights and shaft at Cherry Springs State Park last year. Missed the chair completely and ended up on my butt!  It was past midnight and the skies were starting to go right after that so I decided to pack it in as I knew I was going to be sore in the morning!

Definitely going to put that tape on each CounterWeight!  Thanks for the tip!
 
My ATS Portable Pier for my 1100 is all white so the tape won't be as obvious but still going to do it - definitely on the CounterWeights as well.
 
John A. Sillasen
 
 


Re: APPM Model Creation Problem

Ray Gralak
 

Wayne,

Assuming you have set up image scale accurately in APPM have you tried setting up All Sky plate solving as a backup for when the normal plate solve fails? It's an option in APPM's plate solve tab. This helps if the problem is just that the mount coordinates are not very close to sky coordinates.

There is also a feature in APPM to perform test plate solves on the plate solve tab. You can use that to make sure plate solving is working since each plate solver is different. If you are using APCC 1.8.0.9 you can set the camera type in APPM to "NASA Sky View" for daytime testing. It will download an image in the proper image scale using the mount's RA/Dec pointing position. Not many people seem to know about that. :-)

Anyway, that's all I can think of for now. I'm probably not going to be available again until this evening, but I can help you more at that time if you still can't get any further. In that case It would be great if you could use APCC's log zipper to capture logs and send me a private email with a dropbox link to the zip file.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Wayne Hixson via Groups.Io
Sent: Thursday, March 19, 2020 10:08 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] APPM Model Creation Problem

Hi Ray, trying to create a simple model with my Horizon and Meridian limits turned on. It generates a set of points
but fails every solve. When I manually try a solve in APPM (using Pinpoint) I get this message:


Plate Solve failed!

The plate's exposure start time is required for catalog proper motion calculation. Check the attached image.

What do I need to do?

Wayne


Re: APCC rate settings

Konstantin von Poschinger
 

Hi Ray,

I ran APCC Pro 1.8.0.5. When I check for updates I get the answer No updates to APCC are available. Do I have to be connected to a mount?

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 20.03.2020 um 05:32 schrieb Ray Gralak <groups3@...>:

Hi Brian,

When you run APCC it will indicate a new version is available in the title. Then from APCC's help menu you can use Check for updates to get the download link.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Thursday, March 19, 2020 8:39 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC rate settings

Ray where can we download this latest version?

AP site only has link to 1.8.0.5 right now

thanks -Brian

On Thu, Mar 19, 2020 at 8:21 PM Ray Gralak <groups3@...> wrote:


> Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly
there
> were several more?

That was fixed in 1.8.0.8/9.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Peter Bresler via Groups.Io
> Sent: Thursday, March 19, 2020 8:11 PM
> To: main@ap-gto.groups.io
> Subject: [ap-gto] APCC rate settings
>
> Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly
there
> were several more?
>








--

Brian



Brian Valente
portfolio brianvalentephotography.com  <http://brianvalentephotography.com>





Re: APCC rate settings

Cheng-Yang Tan
 

Hi Ray,

My APCC 1.8.0.4 doesn't see the update when I press "Check for updates".

This has happened with the previous version as well. Is there any log you'd like to have to see what the problem may be.

cytan

On Thursday, March 19, 2020, 10:21:06 PM CDT, Ray Gralak <groups3@...> wrote:


> Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there
> were several more?

That was fixed in 1.8.0.8/9.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Peter Bresler via Groups.Io
> Sent: Thursday, March 19, 2020 8:11 PM
> To: main@ap-gto.groups.io
> Subject: [ap-gto] APCC rate settings
>
> Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there
> were several more?
>





Re: How to Raise AP1600 Height

John A. Sillasen
 

Glow tape is a great idea in addition to your wanting to raise everything with a pier extension.  I use both on my Mach 1, although I never considered putting the tape on the CounterWeights.  Definitely going to do that now that it's been brought up here.

I put the glow tape and it does have a tiny green tinge to a beige/white appearance in the light.  I put it on my Eagle Pier legs with the extra extension. I also have a Musicians Friend practice stool. Its solid black steel with a movable seat in slots in the steel. Very easy to miss in the dark. I went to sit back down on it after being just too close to the CounterWeights and shaft at Cherry Springs State Park last year. Missed the chair completely and ended up on my butt!  It was past midnight and the skies were starting to go right after that so I decided to pack it in as I knew I was going to be sore in the morning!

Definitely going to put that tape on each CounterWeight!  Thanks for the tip!

My ATS Portable Pier for my 1100 is all white so the tape won't be as obvious but still going to do it - definitely on the CounterWeights as well.

John A. Sillasen



APPM Model Creation Problem

Wayne Hixson
 

Hi Ray, trying to create a simple model with my Horizon and Meridian limits turned on. It generates a set of points but fails every solve. When I manually try a solve in APPM (using Pinpoint) I get this message:

Plate Solve failed!
 
The plate's exposure start time is required for catalog proper motion calculation. Check the attached image.

What do I need to do?

Wayne


Re: APCC rate settings

Ray Gralak
 

Hi Brian,

When you run APCC it will indicate a new version is available in the title. Then from APCC's help menu you can use Check for updates to get the download link.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Thursday, March 19, 2020 8:39 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC rate settings

Ray where can we download this latest version?

AP site only has link to 1.8.0.5 right now

thanks -Brian

On Thu, Mar 19, 2020 at 8:21 PM Ray Gralak <groups3@gralak.com> wrote:


> Running APPC 1.8.0.4 with GTO4 on my Mach1 it appears there are only four rate settings now; formerly
there
> were several more?

That was fixed in 1.8.0.8/9.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Peter Bresler via Groups.Io
> Sent: Thursday, March 19, 2020 8:11 PM
> To: main@ap-gto.groups.io
> Subject: [ap-gto] APCC rate settings
>
> Running APPC 1.8.0.4 with GTO4 on my Mach1 it appears there are only four rate settings now; formerly
there
> were several more?
>








--

Brian



Brian Valente
portfolio brianvalentephotography.com <http://brianvalentephotography.com>


Re: APCC rate settings

 

Ray where can we download this latest version?

AP site only has link to 1.8.0.5 right now

thanks -Brian

On Thu, Mar 19, 2020 at 8:21 PM Ray Gralak <groups3@...> wrote:
> Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there
> were several more?

That was fixed in 1.8.0.8/9.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Peter Bresler via Groups.Io
> Sent: Thursday, March 19, 2020 8:11 PM
> To: main@ap-gto.groups.io
> Subject: [ap-gto] APCC rate settings
>
> Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there
> were several more?
>






--
Brian 



Brian Valente


Re: APCC rate settings

Ray Gralak
 

Running APPC 1.8.0.4 with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there
were several more?
That was fixed in 1.8.0.8/9.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Peter Bresler via Groups.Io
Sent: Thursday, March 19, 2020 8:11 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] APCC rate settings

Running APPC 1.8.0.4 with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there
were several more?


APCC rate settings

Peter Bresler
 

Running APPC 1.8.0.4  with GTO4 on my Mach1 it appears there are only four rate settings now; formerly there were several more?


Re: APCC V1.8.0.4 Upgrade

Ray Gralak
 

Jack, Ray, I’ve been meaning to do the same. Ray will the user lose all their horizon, meridian settings etc. If they
upgrade to the new version? Is there a step by step instruction on the how to update? Thx in advance Dui.
what specifically does the update do? I have the PRO Version.
You will not lose any settings by upgrading. Even uninstalling and reinstalling won't affect settings.

The changes are all bug fixes resulting from user feedback. The changes can be found at this link:

https://www.siriusimaging.com/Help/APCC/version_history.htm

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Dui @ DDHO
Sent: Thursday, March 19, 2020 6:34 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC V1.8.0.4 Upgrade

Jack, Ray, I’ve been meaning to do the same. Ray will the user lose all their horizon, meridian settings etc. If they
upgrade to the new version? Is there a step by step instruction on the how to update? Thx in advance Dui.
what specifically does the update do? I have the PRO Version.


Re: APCC V1.8.0.4 Upgrade

Dui @ DDHO
 

Jack, Ray, I’ve been meaning to do the same. Ray will the user lose all their horizon, meridian settings etc. If they upgrade to the new version?  Is there a step by step instruction on the how to update?  Thx in advance Dui.
what specifically does the update do?  I have the PRO Version.


Re: How to Raise AP1600 Height

Robert Berta
 
Edited

Jack
May not be the entire answer to your problem but.....
Look for some glow in the dark tape called SAFETY  TAPE. It is a light green cream color and with  a few seconds of exposure to a light or LCD white light flashlight, will glow in the dark for 7 hours or so. It is just a glow and not a light source so won't bother your night vision.  I use on scopes, tripods, etc. to help locate tripping hazards in the dark. I learned about it when I was working as a Safety Engineer before retiring. They use it in building exit hall ways placed low on walls. If lights go off in an emergency you can get low to avoid the smoke and breath as you leave the building in a fire. I introduced it to the astronomy club I belonged to in San Francisco and later when I retired in Michigan 14 years ago...to the club here. Virtually everyone in the three clubs I belong to here uses it. We buy it in 100' x 2 " rolls. It is so popular here we already went through one roll and 1/2 way through our second.

Look for it if you think it might solve your problem....if you want a small sample I could mail you a piece if you send me your address....
biker123 at att dot net

I have a 900 and 1100 mount mounted on flat pier adapters on a permanent pier and also a heavy duty tripod for my own use. I don't think there is any existing riser for that but you could simply build a spacer using  hardwood stacked up and cut round to match the flat plate ring. The wood would actually be beneficial in vibration damping. Alternatively you could have a machine shop built a box riser although that would obviously involve a lot more expensive material and machining. I have my own welder, metal lathe and milling machine so that would be easy in my case. 

Also....how is that double pier working? I have used the single pier model on a 14" Celestron HD SCT mounted on a Celestron CGE-Pro mount in an observtory I designed and manage for boy and girl scouts here. For visual it is just barely usable but horrible vibrations that last a long time so useless for photography. I finally had to build reinforcements but that eliminates some of the ability to raise and lower it that we wanted.  The sad part is the company that makes it guaranteed it would be fine and after installation said "Guess we were wrong." And told us we couldn't return and get credit for the larger capacity model. Needless to say we weren't happy.


NEAF & NEAIC 2020

Karen Christen
 

Hello astro-nuts,

 

We are delighted to share the new dates for NEAF and NEAIC:

NEAF2020 on Sept 12-13 (Sat & Sun) at Rockland Community College, Suffern, NY

NEAIC2020 on Sept 14-15 (Mon & Tues) at the Crowne Plaza Hotel

 

Note that these conferences will be held in the same format as in the past, however NEAIC will follow NEAF, rather than precede it.

 

We appreciate the huge last minute effort of the Rockland Astronomy Club to reschedule the conferences in 2020.  We plan to attend and hope to see you there.  While we do not have any new product announcements at present, we are looking forward to demonstrating some cool advanced keypad features and the final version of the Mach2, along with a variety of other mounts, scopes, and accessories.

 

The RAC has also announced NEAF The Virtual Experience on April 4th.  At this time, we have limited information about the opportunities for exhibitors to participate and the time is short.  We have decided that since we are primarily a manufacturing and not a marketing company, we are going to spend the next few weeks doing what we do best: developing and building great equipment for you.

 

For more information, check out neafexpo.com

 

Karen Christen

Business Administrator

Astro-Physics, Inc

815.282.1513

http://astro-physics.com/

 


--
Karen Christen
Astro-Physics


Re: How to Raise AP1600 Height

Roland Christen
 

Splendid!

Still, I would wrap some bubble wrap around the weights just in case.

Roland



-----Original Message-----
From: Jack Huerkamp <Mallincamusa@...>
To: main <main@ap-gto.groups.io>
Sent: Thu, Mar 19, 2020 6:41 am
Subject: Re: [ap-gto] How to Raise AP1600 Height

Roland,

I eliminated the shaft extension and 10# weight yesterday and reversed the order on the 24# and 30# weights.  Now all I have to do is wair for the skies to clear to try out moving around in the dome at night and seeing if I can avoid bumping into the weights!

Thanks,

Jack


Re: Mach2 and APCC last night

Dean Jacobsen
 

On Tue, Mar 17, 2020 at 05:19 PM, uncarollo2 <chris1011@...> wrote:
Now, to make it even more interesting, I never used a guider for the entire 2 weeks that I was imaging. Rather I was testing the pure tracking ability of the encoder mount with a tracking model. I took hundreds of exposures with almost no rejects. I had only a couple of exposures with slight oval stars which were caused by 30mph wind gusts.
 
The encoders eliminate periodic error and make it possible to drive both axes at very precise custom rates that are created in a tracking model. The model I was testing happens to be the one we are adding to the new keypad software, but it applies equally to the APCC-APPM tracking model. Once you have modeled the sky, and you don't move the mount or scope, you can indeed eliminate guiding. I spent the early part of one night creating the tracking model and used it for 2 weeks. Worked perfectly every night.
 
If you don't have a permanent setup with good polar alignment, then guiding works fine too - as long as you have good parameters dialed in.
 
Roland,

How is the keypad upgrade project going?

This new keypad feature was something that tipped the balance in deciding whether to purchase a Mach2 and is definitely something that I will use.
 
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 

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