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CGE Pro tracking and skipping/jumping

Celestron Mount
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#1 Tyro

Tyro

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Posted 20 September 2021 - 08:23 AM

Hi everyone. I'm having some problems with my CGE Pro and how smoothly it seems to be tracking.  The video below shows what I mean.

I have a C14Edge+Hyperstar setup.

 

https://youtu.be/SkcwnbRi0L8

 

I had this issue a while back and sort of fixed it by adjusting the worm. I then had a ton of backlash in the RA and had to add a shim to the worm block and adjust the tension screw.  I have also tried to run a few iterations of PEC (which this doesn't look like PEC anyway).

 

Any other thoughts would be appreciated.

Thanks



#2 Seiten

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Posted 20 September 2021 - 08:51 PM

Ok, just a thought....

 

I have the C9.25Edge and was getting streaks in one direction on longer exposures (>4 min).  If I blinked images like that the star field was slowly shifting.  However, I noticed the pictures from my top-mounted 280mm FL guide camera were stable.  I finally discovered what they call differential flexure.  And I attributed it to mirror flop in my C9.25.  I thought I was being smart by tightening the focus lock knobs, but come to find out it was actually worsening my mirror flop as well as my focus backlash/shift.

 

Have since moved to OAG and loosened those focus locks and forgotten they exist.  Am able to get rock solid images for 9 minutes and APT and NINA autofocus routines nail it almost every time.

 

I doubt this is your problem if you're running hyperstar .... but just a thought.




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