CGEM PEC Training Part 2
April 27th, 2010
As I recently identified and fixed a major issue with mirror slop in my reflector I decided to take some time out to have another run at capturing periodic error, as my previous results along with my guiding were badly effected. Here is the PEC recorded over 8 worm cycles :
The data shows a periodic error of +8.4/-5.7 uncorrected, much better than the +14.2/-13.0 I had previously recorded. I will get out on the next clear night to record the corrected results.
Those are really nice results. Would you recomend CGEM over Skywatcher NEQ6 for astrophotography?.
Thank you
I’ve not used an EQ6 myself, so I’m probably not in an ideal position to give advice. However they are built on the same basic platform, the CGEM being a rehoused and modified EQ6. The primary differences being servo motors instead of stepper, differences to the bearings and of course the Celestron nexstar controller and all star alignment.
One of the primary selling points for me was the ability to track up to 20 degrees past the meridian, which allows for longer imaging sessions without having to deal with the meridian flip. Of course you may be able to do this with the EQMod software, I don’t know.