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Re: APPM requirements

Dean Jacobsen
 

Ray's APCC/APPM on-line manual is a great place to start.

https://www.siriusimaging.com/Help/APCC/index.html

There is a specific section for APPM that I used to get everything set up.
--
Dean Jacobsen
http://astrophoto.net/wp/
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Amateur Radio Call Sign - W6DBJ


Re: APPM requirements

Joseph Beyer
 

Ray has also created a YouTube video for APPM.  It’s intended for use with Sequence Generator Pro for camera control but essentially highlights the setup. Following the steps makes it quite simple. 

 

https://youtu.be/XwFbQTVIobM


Joe


Re: APPM requirements

Worsel
 

Ted

There have been a couple recent threads on building APPM models during bright moon times.  Here is one.  https://ap-gto.groups.io/g/main/topic/81388396

I do not think there is a max limit on focal length, as long as plate solving still functions.  I build models on a 2500 mm OTA with a full frame sensor / OAG and plate-solving is not a problem. 

Image scale may be more important.  The APPM section states
"If your image scale when binned in less than 3 arc-seconds/binned pixel then plate solve accuracy
will not be affected."



Bryan


APPM requirements

Ted Mickle
 

I would appreciate some guidance on how to set up APPM. I have an AP 1100GTO on an ATS pier that has been stabilized with three ratchet ropes attached to steel anchors imbedded 4 inches into a concrete slab.

I keep the mount and TAK f/7.7 TOA 130 covered with Telegizmos 365 covers when not in use.

Is this a stable enough platform to build reliable pointing models?

If so, can a reliable pointing model be obtained with illumination from the moon?

What is the maximum focal length recommended for use with APPM?

Thanks for your assistance and guidance.

Ted


Re: AP1600 - Intermittent Loss of Connection

 

Jack,

 

Reliability is more a function of how you set a system up, than of the connection method itself. In your observatory, you probably have an issue with something like a driver, faulty cable, or faulty adapter. In my opinion (and therefore completely open to disagreement!), there is no difference in reliability between USB, Serial and Ethernet, so long as you perform regular maintenance to your system and keep cables, adapters and drivers current. That said, there is no need to limit yourself with connecting a CP4; you can run commands through every port at the same time and the mount will be fine. APCC has a way to run a backup COM port, so you can do something like Ethernet + Serial in your observatory.

 

Liam

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jack Huerkamp
Sent: Tuesday, March 23, 2021 11:20 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] AP1600 - Intermittent Loss of Connection

 

I have my AP1600 with CP4 connected to the observatory computer using a Serial cable and USB to Serial adapter.  I use SkyTools to connect to and control the mount.  Occasionally I get an error indicating that connection to the mount has been lost.  I re-establish the connection and all is fine.
Would using a CAT5 or CAT6 connection from the CP4 to the computer provide a  more reliable connection to the mount?
Can I have the mount connected to the computer using both a CAT cable and a serial cable?
If so, which connection takes precedence?

Yours truly,

Jack Huerkamp 


AP1600 - Intermittent Loss of Connection

Jack Huerkamp
 

I have my AP1600 with CP4 connected to the observatory computer using a Serial cable and USB to Serial adapter.  I use SkyTools to connect to and control the mount.  Occasionally I get an error indicating that connection to the mount has been lost.  I re-establish the connection and all is fine.
Would using a CAT5 or CAT6 connection from the CP4 to the computer provide a  more reliable connection to the mount?
Can I have the mount connected to the computer using both a CAT cable and a serial cable?
If so, which connection takes precedence?

Yours truly,

Jack Huerkamp 


Re: Mach2 intermittent loss of connection

mjb87@...
 

Same problem happened last night.

Thanks to all for the help.

Yes, I'm using TCP.

Ray has looked at my logs and thinks it is a timing issue. My data goes from mount via Cat6 to LAN switch via fiber to another LAN switch and then via Cat6 to the computer.  I will advance the timeout setting from 100ms to as much as 500ms, a bit over time to fine the sweet spot. I'll also set up the backup COM port using a USB connection. I can also take the second switch out of the loop if needed.

I'm using the brick power supply that came with the mount.  I also have the Powerwerx power supply, for now attached to my 1100. If the problem persists I'll use that power supply on the Mach2 and see if that solves it.

Once again, my thanks to this great community for their support and good counsel.

Marty


Re: Issue with DOVELM162

Robert
 

I'm not sure I understand your question.  The clamp isn't threaded so I'm going to assume you're talking about the knob, in which case, it is one piece.

Robert


Re: Help Parking AP 900 in TheSky #ASCOM_V2_Driver

Ray Gralak
 

Hi Bob,

Thank you, Ray. What ASCOM client application would work?
Any ASCOM client would work, but the AP V2 driver comes with the AP Jog utility, which would be a good choice.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bob Gillette via groups.io
Sent: Monday, March 22, 2021 4:57 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Help Parking AP 900 in TheSky #ASCOM_V2_Driver #ASCOM_V2_Driver

Thank you, Ray. What ASCOM client application would work?

Bob


Re: AP V2 Ascom driver slew speeds wrong #ASCOM_V2_Driver

Ray Gralak
 

I usually control this from my warm room by opening Astro-Physics Jog Scope and then calling up the V2 driver
window (v5.30.10). Then to make fine adjustments to the pointing, while viewing an image on the screen, I set the
move rate to 1x or 0.5x.
A curious problem has started occurring today with my AP 1200GTO (GTOCP3, Firmware M).
With the older firmware, like what you are using, you should instead use v5.21.01 :

https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.21.01.exe

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Arditti
Sent: Monday, March 22, 2021 2:59 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] AP V2 Ascom driver slew speeds wrong #ASCOM_V2_Driver

A curious problem has started occurring today with my AP 1200GTO (GTOCP3, Firmware M).

I usually control this from my warm room by opening Astro-Physics Jog Scope and then calling up the V2 driver
window (v5.30.10). Then to make fine adjustments to the pointing, while viewing an image on the screen, I set the
move rate to 1x or 0.5x.

However, suddenly today this is not working. Setting the move rate to 1x or 0.5x or 0.25x results in the object
shooting across the display: the telescope is slewing much faster than the stated rate. 12x is not so bad, strangely.

Jog Scope still performs as expected.

I've updated ASCOM, switched everything off and on again, but still get the same behaviour.

Can anyone suggest what the problem is?

Thanks,

David


Re: Issue with DOVELM162

M Hambrick
 

Thanks Robert That is good to know.

Are the section of the clamp with the female threads and the Allen head screw all one piece ?

Mike 


Re: Issue with DOVELM162

Robert
 

"From what I can tell, the Allen head in the clamp looks like the head of a standard 1/4-20 socket head cap screw that has been press fitted into the recess hole in the aluminum clamp. The knurling in the head helps to hold it into place."

This is not the case at all.  The knob is threaded and the screw is held in place with Loctite.  All that needs to be done to fix it is to remove the loose screw, clean the threads up a bit and re-apply some red 271 Loctite.

Robert


Bright light during point mapping

David Johnson
 

I was doing point mapping using APPM the other night, and it was going along well.  Then a couple of the images had this bright flare across them, although they could be plate solved, but one of them was completely saturated and was unable to be solved.  I was inside watching the process, which still fascinates me, via Remote Desktop, and I was getting ready to go outside to see what was shining down my OTA, but then I realized what the reason was.  It was our overbearing friend, the Moon. Something to keep in mind when you’re point mapping.


Re: Help Parking AP 900 in TheSky #ASCOM_V2_Driver

Bob Gillette
 

Thank you, Ray.  What ASCOM client application would work?

Bob


AP V2 Ascom driver slew speeds wrong #ASCOM_V2_Driver

David Arditti
 

A curious problem has started occurring today with my AP 1200GTO (GTOCP3, Firmware M).

I usually control this from my warm room by opening Astro-Physics Jog Scope and then calling up the V2 driver window (v5.30.10). Then to make fine adjustments to the pointing, while viewing an image on the screen, I set the move rate to 1x or 0.5x.

However, suddenly today this is not working. Setting the move rate to 1x or 0.5x or 0.25x results in the object shooting across the display: the telescope is slewing much faster than the stated rate. 12x is not so bad, strangely.

Jog Scope still performs as expected.

I've updated ASCOM, switched everything off and on again, but still get the same behaviour.

Can anyone suggest what the problem is?

Thanks,

David


Re: Asteroid Vesta using Horizons #Mach2GTO

David Johnson
 

379 frames, each 60 seconds. They were calibrated with flats and darks and registered in Pixinsight. Not integrated, of course. Cropped, dynamically normalized, and the frames output from Blink. 


Re: Mach2 intermittent loss of connection

weihaowang
 

Hi Marty,

I had a similar problem and reported it here a while
ago. It took a while for me to isolate the issue.
It turned out, it’s a faulty power supply. Of course,
what happened on me may not be the same as
your issue, but it’s worth checking out.

Cheers,
Wei-Hao
--

Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: Asteroid Vesta using Horizons #Mach2GTO

Greg Salyer
 

Really nice. How long where the subs?

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Johnson
Sent: Monday, March 22, 2021 10:06 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] Asteroid Vesta using Horizons #Mach2GTO

 

I realize this is not exactly something that hasn't been done before, but it's the first time I've tracked an asteroid and made this kind of video.  The Mach2 definitely made it easier than it would have been with my previous mounts.  YouTube link here.


Re: Asteroid Vesta using Horizons #Mach2GTO

David Johnson
 

Thanks for all the kind comments. 


Re: Mach2 intermittent loss of connection

 

Hi Marty

one thing to confirm is you are using TCP and not UDP?

I found UDP to be unreliable and cause intermittent connectivity issues

Brian

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