Still learning the ins and out of this GSO RC 8", had to machine a home made bracket to mount the guide scope, have also replaced the focuser with a FeatherTouch. Tried to collimate using CCDInspector but it was flipping between 0.5 to 6 without any adjustment, at the time FWHM was about 4, tried both multi stars (focused) and single star (out of focus), so this image was captured with the RC collimated using the Glatter - the holographic image looked pretty good to me. I then had to go through another learning curve guiding with PHD as I'm now imaging at 0.68 arcsec/pixel. Further this is the first time I've experience dew on the main mirror, so some of the subs in this image had dew, just wondering if a dew strap can be used on this fibre casing of the RC.
Following is a result of NGC 253 captured from my backyard.
Main Scope: GSO RC 8"
Guide Scope: SW 70mmx500mm
Main Camera: QHY9 mono
Guide Camera: QHY5 mono
Subs: Sii 8nm 16x20min Bin2, Ha 7nm 17x20min, Oiii 8.5nm 11x20min Bin2
MPCC Field Flattener
HEQ5 Pro Mount
Neb2 and PHD
Processed using IP and PS-C3
Hubble palette Sii=red Ha=green Oiii=blue
Small version
http://ejcruz.smugmug.com/Photograph...60_5a6dt-L.jpg
Large version
http://ejcruz.smugmug.com/Photograph...0_5a6dt-X2.jpg
Advise always welcome.
Cheers
Eddie