I've got mixed feelings on this one. I'm happy with the target itself but pretty bummed about the strange light streaking across the top left and at the bottom of the field.
The first image is a cropped version and the second is the entire field. The streaking is very faint in all the subs taken across the two nights at IISAC. I cleaned the corrector plate on the scope before the camp and thought I had stuff it but ruled that out as the streaking was not present in my image of
Eta Carina taken on the same two nights.
I'm thinking the streaks were caused by Antares?
I'm interested on everyone thoughts.
I love all the very wide images of Rho Ophiuchus and thought IISAC would be a great opportunity to shoot some Hyperstar subs on IC4603. Even two minute subs at F2 were pretty faint but I'm happy with what was produced by the set up (apart form the streaks).
49 x 2 minute subs taken with Canon 60Da on C11 Edge HD with Hyperstar lens. Mount CGEM DX .
Processed in Pixinsight
Large crop version
Large full field
Here's a shot of the scope during the session.
Thanks for Looking
Rod