Date   

Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Seb@stro
 

Out of curiosity, is there one status led for both encoders or one by axis? 

I could find a led under the RA axis (kind of lighting the serial #) but haven’t found any on the Dec axis.

Le 27 mars 2021 à 17:37, Bill Long <bill@...> a écrit :


Yeah sounds like a call to AP is in order. When it gets later check for that LED color.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Ray Gralak
 

I’ll try that, but it doesn’t explain why I couldn’t do a park with the keypad.
Low voltage or an intermittent power connection to the mount could explain everything.

Double check all the power connections to make sure nothing is loose.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Johnson
Sent: Saturday, March 27, 2021 4:18 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

I’ll try that, but it doesn’t explain why I couldn’t do a park with the keypad.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

I’ll try that, but it doesn’t explain why I couldn’t do a park with the keypad.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Ray Gralak
 

Hi David,

From your log files it looks like there was a problem communicating with the mount, which is why APCC and/or the driver were not always able to show correct status.

Some things to try:

* If you are using USB through a USB hub, instead, try using a single cable from the computer to the mount.

* Reboot the computer.

* Use a different connection (e.g. Ethernet)

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Johnson
Sent: Saturday, March 27, 2021 8:31 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

I have a serious problem with my mount. I imaged all last night, using APPM, with no apparent issues. However,
when I tried to do a Park 3 this morning, the mount acts like it is trying to Park, but it doesn't slew and apparently
parks in place. I have tried shutting down the computer and mount numerous times with no change. The mount will
connect to APCC, initialize, and manually slew using the arrows, but it won't do much else. It will not park in any of
the standard positions, acting as I described above, always parking in place. Also, if I try to do a Home on the AE
tab, it says that homing has failed. It's obvious the mount doesn't know where it's pointing, because it says it's at a
negative altitude, when the mount is clearly not. Also, it says it's CW up, when it's clearly not. The following may or
may not be pertinent, but I figure it's better to give too much information than not enough to avoid back and forth.
The "ENC" button in the Telescope Position area is not lit., I'm getting time-out Comm error, although the fact that I
am able to manually slew using the arrows shows that there is at least some communication between the mount
and computer. I'll make a zipped log file available as soon as I can get it transferred.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

Yeah sounds like a call to AP is in order. When it gets later check for that LED color.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 1:05 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Yes.  I doubt that’s the problem, anyway, since the mount slews in both RA and Dec fine.


Re: APCC PRO - New to APPM and Pointing Model

R Botero
 

Jack

I, like you, was a user of APCC Standard for years. Learning to use the Pro version and APPM was no problem at all. 

You definitely want to use the same imaging equipment you will be using on a regular basis on the mount as you are modelling the characteristics not only of the mount, such as pointing, but more importantly of how your optics and sensors change across the sky as the scope/mount combination moves. 


What program do you use for plate solving your CCD images?  You will need a program that supports this feature and can interact with APPM or otherwise have a native astrometric solver such as Pinpoint installed (this is my option). There’s a tab in APPM where you set these parameters up.

What camera do you have mounted on your 16” RC? Do you know the pixel scale, rough image area and rotation angle? You will need to enter these in the relevant tab for APPM.  If your fov is narrow, you may want to use a star catalog with sufficient stars for your plate solves to be accurate enough so that your model is as exact as possible. Also if your sensor is large, you want to bin it at 2x2 at least and perhaps just use 1/2 or 1/4 of its area for the actual images and plate solves so that the whole modelling process doesn’t take too long. APPM will
allow you to test your plate solving settings with a sample image before you start modelling. 

Try first a small model (20 points or so) just to see everything works. And the acquiring and solving of
your images goes smoothly. 

Also, as a user of APCC, do you have your meridian AND horizon limits set and enabled? You want to make use of these to do the modelling taking advantage of CW up positions etc. APPM allows for these to be enabled (including safe slews). 


Read the APPM quick start guide though. It’s a subsection of the APCC application and not too long. 

In my case, with a permanent setup, I ended doing a 130 point model and was immediately able to image unguided at 1300mm (peanuts for your RC!) getting nice round stars. Both for an 1100 and 1600GTO. 

Good luck!

Roberto


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Yes.  I doubt that’s the problem, anyway, since the mount slews in both RA and Dec fine.


APCC PRO - New to APPM and Pointing Model

Jack Huerkamp
 

I just obtained APCC PRO and downloaded the very detailed manual.  I have used APPC Standard for years and want to get more accurate GoTos - especially when meridian flips are involved.  Other than reading and trying to digest the manual first, are there any quick start guides or videos on line showing how to get up to speed relatively quickly in using APPM?

Also, my primary scope is a 16" f/8 RC.  Would I use this scope with camera to create the pointing model, or is the focal length too large?

Yours truly,

Jack Huerkamp


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

Yeah if it's too bright you wont see it. The read heads have an LED on them. Blue and green are good, yellow and red mean problem. Was hoping you could see that color. I can see the glow of it when it's dark enough.

Does sound like something is up with the encoder. Did you try reconnecting the motor cables?


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 10:29 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Can't see anything, and it's not practical to cover it sufficiently where it is this time of day.  I'm not even sure where to look, since I've never noticed it before. 

Playing with the mount further, it does look like the problem is with RA.  DEC values change as expected when slewing, but the RA value does not change when slewing E and W.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Can't see anything, and it's not practical to cover it sufficiently where it is this time of day.  I'm not even sure where to look, since I've never noticed it before. 

Playing with the mount further, it does look like the problem is with RA.  DEC values change as expected when slewing, but the RA value does not change when slewing E and W.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

Can you see the LED light color from the back side of the RA axis? Might need to cover it to get it dark enough to view it. 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 9:50 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Yes


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Yes


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

So your using the 24v power brick and not a battery, etc?


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 9:45 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Adapter that came with the mount - same one I’ve been using since I got it.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Adapter that came with the mount - same one I’ve been using since I got it.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

What is your power source?


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 9:41 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Yes, same problem with the Keypad.  I can slew using the arrows, but it will not park.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Yes, same problem with the Keypad.  I can slew using the arrows, but it will not park.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

Do you have a keypad to test?


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 8:30 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
I have a serious problem with my mount.  I imaged all last night, using APPM, with no apparent issues.  However, when I tried to do a Park 3 this morning, the mount acts like it is trying to Park, but it doesn't slew and apparently parks in place.  I have tried shutting down the computer and mount numerous times with no change.  The mount will connect to APCC, initialize, and manually slew using the arrows, but it won't do much else.  It will not park in any of the standard positions, acting as I described above, always parking in place.  Also, if I try to do a Home on the AE tab, it says that homing has failed.  It's obvious the mount doesn't know where it's pointing, because it says it's at a negative altitude, when the mount is clearly not.  Also, it says it's CW up, when it's clearly not.  The following may or may not be pertinent, but I figure it's better to give too much information than not enough to avoid back and forth.  The "ENC" button in the Telescope Position area is not lit.,  I'm getting time-out Comm error, although the fact that I am able to manually slew using the arrows shows that there is at least some communication between the mount and computer.  I'll make a zipped log file available as soon as I can get it transferred.


Daylight Saving Time

Wes Atchison
 

I have read Roland's paper on Daylight Savings Time setting using the Keypad, I do not use the Keypad often so my question is how to handle Daylight Savings Time just using a Laptop and the CP4 with  AP Ascom V2 v5.30.10.  In the Advanced setting I have Sync Mount Time at Initialization checked, does that take of the problem?

Regards,

Wes
WA5TKU


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Here’s a link to the zipped log file.  The problem started this morning around 0700, as far as I can tell


Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

I have a serious problem with my mount.  I imaged all last night, using APPM, with no apparent issues.  However, when I tried to do a Park 3 this morning, the mount acts like it is trying to Park, but it doesn't slew and apparently parks in place.  I have tried shutting down the computer and mount numerous times with no change.  The mount will connect to APCC, initialize, and manually slew using the arrows, but it won't do much else.  It will not park in any of the standard positions, acting as I described above, always parking in place.  Also, if I try to do a Home on the AE tab, it says that homing has failed.  It's obvious the mount doesn't know where it's pointing, because it says it's at a negative altitude, when the mount is clearly not.  Also, it says it's CW up, when it's clearly not.  The following may or may not be pertinent, but I figure it's better to give too much information than not enough to avoid back and forth.  The "ENC" button in the Telescope Position area is not lit.,  I'm getting time-out Comm error, although the fact that I am able to manually slew using the arrows shows that there is at least some communication between the mount and computer.  I'll make a zipped log file available as soon as I can get it transferred.

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