Is there a solution for auto-guiding issues with a Celestron CGEM telescope?

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SUMMARY

The discussion centers on persistent auto-guiding issues experienced with a Celestron CGEM telescope, where oscillation occurs in both DEC and RA axes despite upgrades and proper alignment procedures. The user employs TheSkyX for guiding and imaging at a focal length of 1.4m, yet still encounters star smearing. Suggestions include adjusting responsiveness settings and considering the use of PHD Guiding, which has proven effective for other users with similar setups.

PREREQUISITES
  • Understanding of auto-guiding principles in astrophotography
  • Familiarity with TheSkyX software for telescope control
  • Knowledge of drift alignment techniques
  • Experience with Celestron CGEM mount specifications
NEXT STEPS
  • Research how to adjust responsiveness settings in TheSkyX for improved guiding performance
  • Explore the features and benefits of PHD Guiding for auto-guiding
  • Investigate common issues related to flexure in off-axis guiding setups
  • Learn advanced drift alignment techniques to enhance telescope alignment accuracy
USEFUL FOR

Astronomy enthusiasts, astrophotographers, and telescope operators seeking to optimize auto-guiding performance with Celestron mounts and software.

NFuller
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So, I have a persistent problem when trying to use auto-guiding. The telescope likes to oscillate back and forth in DEC and sometimes in RA. I originally assumed my mount just wasn't very good but after upgrading to a celestron CGEM, the problem is still there, although not as bad.

The guider is an off-axis guider so I don't think it is a flexure issue. I use TheSkyX for guiding and imaging. I'm imaging at a somewhat long focal length of 1.4m, but I would still expect the auto-guiding to not smear the stars around. I also try to make sure my alignment is good before imaging by performing a drift alignment procedure.

I have tried to use the antibacklash controls on my mount and TheSkyX but it doesn't seem to help much. Has anyone else dealt with such problems and have any advice for improvements I can make?
 
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I have an autoguiding problem that is probably flexure, but still might be able to help...

I have an Orion Atlas and am currently guiding with an Orion ED80/DMK and imaging with an ES127/DSI.

Taking a whack at it, I'm going to guess you are trying to fight fire with fire and have your responsiveness settings too high. Try restoring defaults or slowing everything down (except maybe guide camera exposure rate: 2-5 per second). If that doesn't work, try PHD Guiding. It gives me great results on a mount inferior to yours.
 
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russ_watters said:
your responsiveness settings too high
Ok, I'll look into adjusting those.
russ_watters said:
(except maybe guide camera exposure rate: 2-5 per second)
Yes, I usually expose at a rate of 4 seconds.
russ_watters said:
try PHD Guiding
I used PHD guiding with my old mount and upgraded to TheSkyX because it seemed to do a better job but maybe with the new mount, PHD will perform better. Thanks for the advice.
 

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