Celestron CGX - Not tracking after slew

Celestron CGX - Not tracking after slew - INDI Forum
  • Posts: 216
  • Thank you received: 120

Rendering Error in layout Message/Item: array_keys(): Argument #1 ($array) must be of type array, null given. Please enable debug mode for more information.

Please Log in or Create an account to join the conversation.

  • Posts: 554
  • Thank you received: 138
The mount should remember the tracking state through a slew so if it was tracking before the slew it should be afterwards, and vice versa.

The mount should also start tracking after the initial alignment.

And Ekos will send a start tracking command after the first slew.

What would concern me about automatically enabling tracking after a slew is that it's changing the expected behaviour, does the INDI specification specify that a mount must always be tracking after a slew?

Finally, how does this affect parking? This requires that tracking is off after the mount has moved to the park position.
4 years 3 weeks ago #59256

Please Log in or Create an account to join the conversation.


×

INDI Library v2.0.7 is Released (01 Apr 2024)

Bi-monthly release with minor bug fixes and improvements

  • Posts: 216
  • Thank you received: 120

Rendering Error in layout Message/Item: array_keys(): Argument #1 ($array) must be of type array, null given. Please enable debug mode for more information.

Please Log in or Create an account to join the conversation.

  • Posts: 216
  • Thank you received: 120
Related to #1, this may only be happening at the start of my night, but I've developed the habit of always toggling tracking off then on after a slew to be sure. So it might be that I'm unparking the mount (which doesn't enable tracking unless you've saved your mount config while it was tracking), doing a slew, then seeing the issue.

As the code stands now, because it is assuming it will always be tracking after a slew, but there are conditions where it may not actually be tracking, the safest thing to do is to explicitly start tracking.
4 years 3 weeks ago #59259

Please Log in or Create an account to join the conversation.

  • Posts: 554
  • Thank you received: 138
I've just checked with my AVX. Turn on, set mount to indexes, do quick align.
The mount is tracking. I can see this because the tracking mode is reported on the HC as EQ-North, rate Sidereal. Also checking the Ra this is not changing.

Start Ekos, start INDI connected to the Celestron driver.
Indi reports that the mount is tracking. Ekos reports that the mount is tracking.

I have seen Ekos not get the stacking state correctly and stopping then starting tracking seems to be needed but that seems to be an Ekos problem, not a mount problem.

I really don't recommend unilaterally sending a start tracking command. Some Celestron mounts will stop tracking for 0.6 seconds when a start tracking command is sent. At least read the tracking state first.
4 years 3 weeks ago #59261

Please Log in or Create an account to join the conversation.

  • Posts: 398
  • Thank you received: 117
I own a CGX-L, and I don't experience the issue described by rickbassham. I pretty much always execute the same procedure and results as Chris describes. My mount is always tracking after a slew to a target, and not tracking after a park. I have never had to toggle the tracking state in the HC after a slew to new target. I would wonder if something is wrong with the mount and/or installed packages if this were the case........
4 years 3 weeks ago #59262

Please Log in or Create an account to join the conversation.

As far as INDI specifications go, the ON_SET_COORD specify 3 switches:
1. Slew
2. Track
3. Sync

This is the action taken whenever EQUATORIAL_EOD_COORDS is updated. The difference between SLEW and TRACK is that Slew just moves from Point A to Point B and stops there. Whereas Track performs the slew and then engages tracking after it arrives at destination. For most mounts, tracking is re-engaged automatically so there are no differences between SLEW and TRACK. For mounts that have tracking control (on/off), SLEW can be implemented such as that it stops tracking after it is done but this is really not implemented in most drivers.
4 years 3 weeks ago #59269

Please Log in or Create an account to join the conversation.

  • Posts: 216
  • Thank you received: 120
For the AVX and CGX-L, if the mount is not tracking, then you do a slew, does it start tracking automatically?
4 years 3 weeks ago #59272

Please Log in or Create an account to join the conversation.

  • Posts: 216
  • Thank you received: 120

Rendering Error in layout Message/Item: array_keys(): Argument #1 ($array) must be of type array, null given. Please enable debug mode for more information.

Please Log in or Create an account to join the conversation.

  • Posts: 398
  • Thank you received: 117
For the CGX-L, when I unpark, the mount is tracking automatically. After a slew, it is tracking too. I'm not sure what the state would be if I intentionally (via HC or kstars mount control) stopped tracking and then slewed. Since I only stop tracking if there's a problem or if I intend to be away/not imaging (and then restart tracking), I am always automatically tracking when not parked or slewing.
4 years 3 weeks ago #59283

Please Log in or Create an account to join the conversation.

  • Posts: 348
  • Thank you received: 69
With my experience, I will confirm on next outing, my CGX (latest firmware etc...) tracks once aligned, and continues to track when slewing.

I can only assume, that either mount thinks it is not aligned, or not set to sidereal tracking.
4 years 3 weeks ago #59299

Please Log in or Create an account to join the conversation.

  • Posts: 216
  • Thank you received: 120
I'll do some more testing tomorrow on it. Maybe I've got something wrong in the hand controller somewhere, since no one else is having the issue.
4 years 3 weeks ago #59301

Please Log in or Create an account to join the conversation.

Time to create page: 0.769 seconds