Continuing my testing of the CGX, I picked the Running Chicken nebula in the early hours of this morning. CGX was setup slightly east heavy, much less so than I would apply to my old NEQ6, and I ran a full calibration routine in Metaguide before starting. I have found that for some reason Metaguide needs full calibration with the CGX, whereas it would be fine with a Quick-Calc with the NEQ6.
This is a test image, consisting of just 10x300S Ha subs, of the Running Chicken Nebula near the SCP. Taken with an ASI1600MM-C camera, through a 115mm TS Photolline APO, running a f5.5 reducer. Guided with Metaguide, and error plot performance was very good, the best achieved so far; there were times it was pretty much flat lining . There is still a slight hint of field curvature on the sides of the image and I need to look at my reducer/corrector spacing.
Obviously I am not really challenging the CGX, as the combined weight of the scope/camera/reducer/ filter wheel, etc is probably less than half the rated capacity of the CGX. However, it is still sitting on a ply floor in my observatory (and I had to discard two subs due to my movement in the obs during the test). I have to remember to start the run from Teamviewer in the house, at least until I get the CGX on the pier.
Astrobin image details here:
http://www.astrobin.com/279589/
Full screen here:
http://www.astrobin.com/full/279589/0/