Automation of meridian flip

Scripts and programs to automate Astroart
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jauunton
Posts: 11
Joined: 17 May 2021, 04:35

Automation of meridian flip

Post by jauunton » 08 Sep 2021, 03:27

Hi all,

I am looking for a way to automate imaging sessions when the target crosses the meridian.

What I need to happen is the sequence/script detects the flip starting, stops the guider, waits for the slew to complete, takes a test shot, plate solves, re-centers the target, restarts guiding, waits for a settle and then re-starts the imaging sequence. Anybody done this? I use PHD2 for guiding but can use the AA guiding routines if that makes things easier.

Regards

John

Iver
Posts: 48
Joined: 08 Jan 2019, 04:32

Re: Automation of meridian flip

Post by Iver » 08 Sep 2021, 16:32

For flip detection you could use "Guider.LostStar" in your imaging script. If it returns True then have the script go to a sub script that starts with a pause long enough to be sure the flip has completed. Then takes an image, solve and sync to the image and GoTo your target. re calibrate your guider and start imaging. I've never tried this but it seems like it could work, there are script commands for all the tasks.
Good luck!
Iver

fabdev
Posts: 278
Joined: 03 Dec 2018, 21:43

Re: Automation of meridian flip

Post by fabdev » 09 Sep 2021, 16:00

To detect the current side of the mount, for ASCOM telescopes, it will be released (but it's already included in AA7) the script function:

Telescope.PierSide

which returns 0, 1, -1 following the ASCOM standard:
https://ascom-standards.org/Help/Platfo ... erSide.htm

Just try:

Print Telescope.PierSide

jauunton
Posts: 11
Joined: 17 May 2021, 04:35

Re: Automation of meridian flip

Post by jauunton » 09 Sep 2021, 22:52

Thanks...I have AA7 so I will try that....

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