Automatic Observation Guiding

CCD cameras (CMOS/CCD), DSLRs, telescope mounts, focusers, autoguiders, domes, Roll off roofs, etc..
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Fellside
Posts: 11
Joined: Fri May 11, 2018 12:31 pm

Sun Mar 31, 2019 1:10 pm

Hi

During Automatic Observation.

Guiding pauses between each exposure and then has to reacquire the guide star. Sometimes this does find the star and the sequence either moves onto the next target or ends the sequence. Why does the Prism not keep guiding on the star until it knows it has completed the last image or has to stop to carry out focusing etc.

Or have I missed a box that I should have ticked ;)

Many thanks

Graham
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Hamza Touhami
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Posts: 564
Joined: Sat May 20, 2017 6:05 pm
Location: Phoenix,AZ
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Mon Apr 01, 2019 12:52 pm

I am not aware that PRISM stops and re-acquires the guide star,let me look into this tonight. As for other countermeasures PRISM has:
  • It can proceed to the next object
  • Search inside the radius of X arcminutes
  • reduce the imaging time to X minutes of time if your system can go unguided
  • Increase the guider's exposure time to find a fainter guide star in case there are no bright ones in the FOv
Hamza Touhami | Site Administrator
Hyperion-Astronomy.com
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Fellside
Posts: 11
Joined: Fri May 11, 2018 12:31 pm

Wed Jun 05, 2019 2:21 pm

Hi Hamza,

I still have not had a clear night to repeat this problem and obtain some logs.

It does seem that a user on the French Prism forum has encountered a similar problem.

http://www.prism-astro.com/forum/viewto ... =11&t=2277

Hopefully the weather will improve and I will be able to look at this problem further

Regards

Graham
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