Date   

Re: APPC/APPM

Roland Christen
 

Tracking at the sidereal rate only works precisely at the zenith and only if the mount is precisely polar aligned. Everywhere else there will be drift. How much drift depends on your image scale and how far from the zenith you are and how well polar aligned you are. Modeling compensates for the drift to a high degree.

Rolando



-----Original Message-----
From: Bruce McMath <bruce.mcmath@...>
To: main@ap-gto.groups.io
Sent: Tue, Aug 10, 2021 8:56 am
Subject: [ap-gto] APPC/APPM

three quick questions:

  1. In a very small nutshell, how can a pointing model improve tracking? 
  2. Why would you need such a model on a scope with encoders?
  3. How much improvement can you expect in unguided imaging with a mount without encoders?

I have a 900 mount and take lots of unguided images for photometry - over a hundred thousand todate.  A big factor in the quality of my data is tracking-related, costing me a lot of time filtering out the worst.  I am in line for a Mach2 but who knows when that will become reality.  I have been hesitant to buy the APPC given that it comes with the Mach2.  Hate to pay for the same thing twice.  :-)  But, if it really works.....
--
James (Bruce) McMath

--
Roland Christen
Astro-Physics


Re: APPC/APPM

Dale Ghent
 

Of your 3 questions, the 2nd one is the most pertinent and the answer to it informs the answers for the 1st and 3rd.

We all live under one giant lens called the atmosphere. We all know it's dynamic with many layers and variations in density between not only those but also different regions of the visible sky. All of this affects how light from space reaches any given point on earth. Mapping the refractive variations of the atmosphere allows a mount to compensate for the effects of atmospheric refraction in any location in the sky that is modeled. The model itself can be adjusted based on measured changes to temperature, to an extent.

Think of this mapping as making a PEC, but for the sky. We have PECs and encoders for compensating for the mechanical variances of the mount, and point mapping brings (broadly) the same concept to the sky. Point mapping can also compensate for non-mount mechanical variations such as any minute flexure of your OTA as it gets pulled by gravity differently when in different orientations (aka flexure).

Functionally, APPM creates a model that APCC then uses to influence the mount with. Yes, you get pointing accuracy, but APCC will also interpolate any needed changes to tracking speed when traversing between mapped areas of the sky. Needless to say, a more dense point model will give more accurate results than a sparse one.

So, with that, it's not a stretch to realize the benefits it has for tracking. A good model is essential for unguided imaging. How long you can go without noticing an excursion depends on your setup and optics, though.

On Aug 10, 2021, at 09:56, Bruce McMath <bruce.mcmath@gmail.com> wrote:

three quick questions:

• In a very small nutshell, how can a pointing model improve tracking?
• Why would you need such a model on a scope with encoders?
• How much improvement can you expect in unguided imaging with a mount without encoders?

I have a 900 mount and take lots of unguided images for photometry - over a hundred thousand todate. A big factor in the quality of my data is tracking-related, costing me a lot of time filtering out the worst. I am in line for a Mach2 but who knows when that will become reality. I have been hesitant to buy the APPC given that it comes with the Mach2. Hate to pay for the same thing twice. :-) But, if it really works.....
--
James (Bruce) McMath


Re: When does APPC/APPM model become invalid?

Chris White
 

I'd be interested in the answer as well.  

My mount is on a tripod in an observatory and I adjusted PA the other night. 

I didn't update my model and guiding remained at around 0.35" RMS error in phd2. 

So it seems that just a small tweak in PA didn't cause any issues. 

I plan to do a grease job on the mount and possible redo the pempro curve. I imagine that these would require a new model but don't really know. 


APPC/APPM

 

three quick questions:

  1. In a very small nutshell, how can a pointing model improve tracking? 
  2. Why would you need such a model on a scope with encoders?
  3. How much improvement can you expect in unguided imaging with a mount without encoders?

I have a 900 mount and take lots of unguided images for photometry - over a hundred thousand todate.  A big factor in the quality of my data is tracking-related, costing me a lot of time filtering out the worst.  I am in line for a Mach2 but who knows when that will become reality.  I have been hesitant to buy the APPC given that it comes with the Mach2.  Hate to pay for the same thing twice.  :-)  But, if it really works.....
--
James (Bruce) McMath


Re: When does APPC/APPM model become invalid?

Ray Gralak
 

Hi Brian,

As you know, I responded to you offline earlier.

I will take a look at your logs and get back to you.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Monday, August 9, 2021 2:19 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] When does APPC/APPM model become invalid?

Hi folks,

this one is probably for Ray -

under what conditions does an APPM generated pointing model become invalid?


I have been experiencing tracking/guiding issues, and when I turned off tracking corrections, the issues went
away. Which leads me to believe i need to re-do APPM

I'm just thinking through what may have caused this, and didn't have a clear picture on what types of conditions
would cause this (e.g., re-meshing worm, etc.)

Thanks


Brian



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


Re: Balance: what happens at Meridian flip?

Roland Christen
 

That still doesn't tell me what kind of motor mount it has.

In any case, how long have you had the mount - since 1998 perhaps?
Does it work for you?
If so, then what you are doing must be good.

Rolando



-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 8:28 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

Sorry
Its an AP900GOTO purchased in May 2008.

Don Anderson


On Monday, August 9, 2021, 04:58:02 p.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


Unfortunately doesn't tell me anything.

Rolando


-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 5:19 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

Mine is a 2008 vintage S/N:900712

Don Anderson


On Monday, August 9, 2021, 02:04:56 p.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


The 900/1200 mounts have spring action built into the motor mounting bracket. They require meshing the teeth properly in order to take advantage of the spring action. The very early and oldest mounts had fixed brackets with no spring, and they would require careful mesh. So, it depends what vintage mount you have.

Rolando

-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 2:01 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

This true for the older 2008 900GOTO? 

Don Anderson


On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Balance: what happens at Meridian flip?

Don Anderson
 

Sorry
Its an AP900GOTO purchased in May 2008.

Don Anderson


On Monday, August 9, 2021, 04:58:02 p.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


Unfortunately doesn't tell me anything.

Rolando


-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 5:19 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

Mine is a 2008 vintage S/N:900712

Don Anderson


On Monday, August 9, 2021, 02:04:56 p.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


The 900/1200 mounts have spring action built into the motor mounting bracket. They require meshing the teeth properly in order to take advantage of the spring action. The very early and oldest mounts had fixed brackets with no spring, and they would require careful mesh. So, it depends what vintage mount you have.

Rolando

-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 2:01 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

This true for the older 2008 900GOTO? 

Don Anderson


On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Balance: what happens at Meridian flip?

Roland Christen
 

Unfortunately doesn't tell me anything.

Rolando


-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 5:19 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

Mine is a 2008 vintage S/N:900712

Don Anderson


On Monday, August 9, 2021, 02:04:56 p.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


The 900/1200 mounts have spring action built into the motor mounting bracket. They require meshing the teeth properly in order to take advantage of the spring action. The very early and oldest mounts had fixed brackets with no spring, and they would require careful mesh. So, it depends what vintage mount you have.

Rolando

-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 2:01 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

This true for the older 2008 900GOTO? 

Don Anderson


On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Balance: what happens at Meridian flip?

Don Anderson
 

Mine is a 2008 vintage S/N:900712

Don Anderson


On Monday, August 9, 2021, 02:04:56 p.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


The 900/1200 mounts have spring action built into the motor mounting bracket. They require meshing the teeth properly in order to take advantage of the spring action. The very early and oldest mounts had fixed brackets with no spring, and they would require careful mesh. So, it depends what vintage mount you have.

Rolando

-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 2:01 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

This true for the older 2008 900GOTO? 

Don Anderson


On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


When does APPC/APPM model become invalid?

 

Hi folks,

this one is probably for Ray - 

under what conditions does an APPM generated pointing model become invalid?


I have been experiencing tracking/guiding issues, and when I turned off tracking corrections, the issues went away. Which leads me to believe i need to re-do APPM

I'm just thinking through what may have caused this, and didn't have a clear picture on what types of conditions would cause this (e.g., re-meshing worm, etc.)

Thanks

Brian 



Brian Valente


Re: Balance: what happens at Meridian flip?

Roland Christen
 

The 900/1200 mounts have spring action built into the motor mounting bracket. They require meshing the teeth properly in order to take advantage of the spring action. The very early and oldest mounts had fixed brackets with no spring, and they would require careful mesh. So, it depends what vintage mount you have.

Rolando

-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Aug 9, 2021 2:01 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

This true for the older 2008 900GOTO? 

Don Anderson


On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Balance: what happens at Meridian flip?

Don Anderson
 

This true for the older 2008 900GOTO? 

Don Anderson


On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland Christen via groups.io <chris1011@...> wrote:


With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics


Re: Mach2 runaway behavior

Luca Marinelli
 

Last night I decided to try and completely delete the Astro-Physics folder in Program Files and start from scratch, instead of only deleting the Setup file in the APCC directory. This appears to have solved the problem. I launched the imaging sequence in SGP and the scope slewed to the target, wiithout going off into a pier collision and without needing to manually home the Mach2. I don't know which file was responsible for the runaway behavior but a clean start of APCC fixed the problem.


Re: Balance: what happens at Meridian flip?

Roland Christen
 

With our spring loaded mounts balance both axes, especially Dec.

Roland



-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Sun, Aug 8, 2021 7:21 pm
Subject: Re: [ap-gto] Balance: what happens at Meridian flip?

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.

--
Roland Christen
Astro-Physics


Re: APCC Setup help request for new AP1100

Ray Gralak
 

Hi Dave,

 

> In years past, I have worked with Mathematica, Matlab, written code, and designed and implemented electro-

> optical-mechanical experiments for 30 years. 

 

This probably has to do with your LAN configuration, not the software.

 

> Didn't know how to proceed, so I guessed and

> pressed 'connect to mount' button.  The response was unsatisfactory.  I saw a window claiming "Invalid firmware

> version ("V" or later required-No response from mount".  Also, flashing pink UDP button...

 

You have an error connecting to the mount, probably because you are using the wrong IP address. It could also be the cable is bad, or a few other things.

 

How did you determine the mount's IP address?

 

Are the CP4 and your PC connected on a LAN with a router? Or is this a direct connection between the computer and the CP4? There are several different ways this can go, depending on the LAN configuration.

 

> Having read and forgotten this entire help manual two months ago, I moved on and found on page 68, describing

> ethernet connections and the directive to click the " Find GTOCP4/GTOCP5 (magnifying glass) button.  That

> button seems 'grayed out'; in any case it is non-responsive.  

 

The button is greyed out when:

 

1) TCP or UDP are not selected as the connection type.

2) The mount is connected.

3) The Connect button has been pressed, and APCC is trying to connect to the mount.

 

It sounds like #3 may apply.

 

> When I follow the startup process in the printed CP-4 manual supplied with this new mount

 

Hint: did you also read through the relevant section(s) in the APCC help? In almost every group box in APCC, there is a tiny round button with a question mark, usually located in the upper right corner of that group box. If you click that button the help file will open to the relevant section. See this screenshot, which identifies that button for the Connection group box:

 

 

-Ray

 

 

 

 

> -----Original Message-----

> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of dcraft34@...

> Sent: Monday, August 9, 2021 3:40 AM

> To: main@ap-gto.groups.io

> Subject: [ap-gto] APCC Setup help request for new AP1100

>

> Hi,

> In days past, I thought of myself as a smart guy.  I am aging, and finding opportunities to question the continuing

> truth of that assessment.  I'm sure you ship new 1100GTO each month, yet this forum is not littered with

> messages from folks who cannot make their mount turn on.  So clearly, I am remiss somehow.

>

> I love this mount.  It looks and feels solid and dependable.  Non-tracking star trails of five minutes are beautifully

> straight at at 2850mm FL.  I have mounted a 14 inch F8 ACF, camera, filter wheels, moonlight focuser and 106#

> of counterweight.  Rough balance is complete.

> The CP-4 is connected to the control room computer via 100 ft of ethernet.  This cable has been rung out- using

> 200 ohms between pins 1 and 8 -the proper cable is connected.  The observatory power bus reads 12.95 VDC.

> The CP-4 shows a red pilot light and an amber light at the ethernet port.  I have ASCOM  6.5 service pack 1;

> driver AP ver 2 5.30.10;   APCC Pro setup 1.8.8.17 pdf.  Alternative ethernet cables are available.

>

> I have selected UDP LAN.

> When I follow the startup process in the printed CP-4 manual supplied with this new mount, on pages 28 and 29, I

> believe I have properly completed through step 6c.  Note: at this point, on the 'setup' screen, there is NO firmware

> version shown in the 'firmware' window box.  The following page (30) does not describe what I should do next.

> Page 30 describes workflow when using third-party software.  Didn't know how to proceed, so I guessed and

> pressed 'connect to mount' button.  The response was unsatisfactory.  I saw a window claiming "Invalid firmware

> version ("V" or later required-No response from mount".  Also, flashing pink UDP button...

>

> Having read and forgotten this entire help manual two months ago, I moved on and found on page 68, describing

> ethernet connections and the directive to click the " Find GTOCP4/GTOCP5 (magnifying glass) button.  That

> button seems 'grayed out'; in any case it is non-responsive.  Following the guidance on page 70 I created a host

> name GTOCP4_1338  and also tried GTO_CP4_1338 host name.  Clicking Connect to APV2 driver returned a

> few windows I clicked through (sure you wish to reconfigure the ascom driver-OK) (please restart the driver -OK)

> (the driver has been updated successfully) .

>

> Click 'connect to mount' yields flashing pink buttons NO RESPONSE FROM MOUNT and the same 'Invalid

> firmware'... window described above.

>

> Inappropriate speech followed.  Rereading the printed manual provided no further guidance.  I viewed the

> youTube videos but they seem to contradict the  1.8.8.17 pdf, or perhaps I don't understand.  I declare

> cluelessness.

>

> Can I hire someone for some reasonable rate (say $100 to $200) to hold my hand and walk me through this setup

> process step-by-step by telephone, until my new mount is actually tracking stars, and functional for PA

> adjustment? And hopefully teach me enough that if/when it hiccups in the future I might find my own unassisted

> path to a fix...

>

> In years past, I have worked with Mathematica, Matlab, written code, and designed and implemented electro-

> optical-mechanical experiments for 30 years.  I won't be a totally clueless basket case, but I might not be much

> help.

>

> Thanks.  Dave.


APCC Setup help request for new AP1100

dcraft34@comcast.net
 

Hi,
In days past, I thought of myself as a smart guy.  I am aging, and finding opportunities to question the continuing  truth of that assessment.  I'm sure you ship new 1100GTO each month, yet this forum is not littered with messages from folks who cannot make their mount turn on.  So clearly, I am remiss somehow.

I love this mount.  It looks and feels solid and dependable.  Non-tracking star trails of five minutes are beautifully straight at at 2850mm FL.  I have mounted a 14 inch F8 ACF, camera, filter wheels, moonlight focuser and 106# of counterweight.  Rough balance is complete.
The CP-4 is connected to the control room computer via 100 ft of ethernet.  This cable has been rung out- using 200 ohms between pins 1 and 8 -the proper cable is connected.  The observatory power bus reads 12.95 VDC.  The CP-4 shows a red pilot light and an amber light at the ethernet port.  I have ASCOM  6.5 service pack 1;   driver AP ver 2 5.30.10;   APCC Pro setup 1.8.8.17 pdf.  Alternative ethernet cables are available.

I have selected UDP LAN.
When I follow the startup process in the printed CP-4 manual supplied with this new mount, on pages 28 and 29, I believe I have properly completed through step 6c.  Note: at this point, on the 'setup' screen, there is NO firmware version shown in the 'firmware' window box.  The following page (30) does not describe what I should do next.  Page 30 describes workflow when using third-party software.  Didn't know how to proceed, so I guessed and pressed 'connect to mount' button.  The response was unsatisfactory.  I saw a window claiming "Invalid firmware version ("V" or later required-No response from mount".  Also, flashing pink UDP button...

Having read and forgotten this entire help manual two months ago, I moved on and found on page 68, describing ethernet connections and the directive to click the " Find GTOCP4/GTOCP5 (magnifying glass) button.  That button seems 'grayed out'; in any case it is non-responsive.  Following the guidance on page 70 I created a host name GTOCP4_1338  and also tried GTO_CP4_1338 host name.  Clicking Connect to APV2 driver returned a few windows I clicked through (sure you wish to reconfigure the ascom driver-OK) (please restart the driver -OK) (the driver has been updated successfully) .

Click 'connect to mount' yields flashing pink buttons NO RESPONSE FROM MOUNT and the same 'Invalid firmware'... window described above.

Inappropriate speech followed.  Rereading the printed manual provided no further guidance.  I viewed the youTube videos but they seem to contradict the  1.8.8.17 pdf, or perhaps I don't understand.  I declare cluelessness.

Can I hire someone for some reasonable rate (say $100 to $200) to hold my hand and walk me through this setup process step-by-step by telephone, until my new mount is actually tracking stars, and functional for PA adjustment? And hopefully teach me enough that if/when it hiccups in the future I might find my own unassisted path to a fix...

In years past, I have worked with Mathematica, Matlab, written code, and designed and implemented electro-optical-mechanical experiments for 30 years.  I won't be a totally clueless basket case, but I might not be much help.

Thanks.  Dave.


Re: Balance: what happens at Meridian flip?

Nick Iversen
 

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap was too heavy to do this and manual finessing was better.


Re: NINA and APCC, 32 or 64 bit

ap@CaptivePhotons.com
 

Use 64 bit unless you have a driver that is only 32 bits.

APCC vs ASCOM V2, TSX 32 bit, Pegasus power drivers, ASI cameras, EFW, optec focusers, Celestron Focusers all work fine for me, and absolve you of memory limitations if you have large format cameras (etc.).

-----Original Message-----
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of michael mccann via groups.io
Sent: Sunday, August 8, 2021 4:12 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] NINA and APCC, 32 or 64 bit

Fast question: I was going to load N.I.NA ver 1.11 but which version 32 or 64 bit?

Cheers
Mike


Re: AP 400 cables needed

 

Larry,

 

Please call our office on Monday. We can provide the cables that you need.

 

Clear Skies,

Marj Christen

Astro-Physics

11250 Forest Hills Road

Machesney Park, IL 61115

Phone: 815-282-1513

www.astro-physics.com

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Lawrence Lopez
Sent: Sunday, August 8, 2021 3:30 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] AP 400 cables needed

 

AP400 GTO:

The GTO Keypad: (GTO-1) has a 15' cable which connects to the GTO control panel.
While the cable is working it is shedding bits of black plastic snow from the sheathing.
Is this field replaceable ?
It does not have a connector on the Keypad.
It has a connector to the GTO Controller (GTOCP2) but it is missing the strain relief.

The Y cable is similarly missing the strain relief for the RA and DEC motors.

It was able to do slews to objects just fine using the Keyboard.
The Sky slewed to objects using a USB to Serial converter.

No optics was mounted at this time.

The biggest problem was finding all the parts to it.
Things got separated over the year.


AP 400 cables needed

Lawrence Lopez
 

AP400 GTO:

The GTO Keypad: (GTO-1) has a 15' cable which connects to the GTO control panel.
While the cable is working it is shedding bits of black plastic snow from the sheathing.
Is this field replaceable ?
It does not have a connector on the Keypad.
It has a connector to the GTO Controller (GTOCP2) but it is missing the strain relief.

The Y cable is similarly missing the strain relief for the RA and DEC motors.

It was able to do slews to objects just fine using the Keyboard.
The Sky slewed to objects using a USB to Serial converter.

No optics was mounted at this time.

The biggest problem was finding all the parts to it.
Things got separated over the year.

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