C11 Edge HD, C925 XLT TEC 140 (#352) w/ AT65EDQ Skywatcher 100ED w/ WO66SD ZenithStar, ES 80mm Apo Sirius, Atlas EQ-G, "Atlosmandy" Pro AZ/EQ-G, T-Rex Apex,Porta II DBK21AU04, DBK21AU618, DMK21AU618, DMK31AU03, ASI120mm/mc, Hutech 500DH Beaglehaven Observatory (BYO #168)
Quote:Ok - I get 0.46"/pixel which is very similar, and I see little vignetting. I can't tell the exact percentage without having bias frames to subtract, so that I know where the "zero" is. But both images appear to be dominated by skyglow so I don't think it matters much and there is just gradual vignetting toward the corners - which is what I expected with that size sensor.So - they both seem ok to me in terms of vignetting.Frank
Astrophotograher's Guide to the Deep Sky
A Guide to DSLR Planetary Imaging
A Beginner's Guide to DSLR Astrophotography
An Advanced Guide to DSLR Astrophotography
Photoshop for Astrophotographers
Quote:Hi Brian,Please see page 15 of this thread. You will find all the details from that page onwards. Best wishes
Quote:Are you sure the OAG was focused properly when you looked for a guidestar?
Quote:Hey Guys,Looking for some input here. I want to get a reducer for my 9.25. My options are the optec or the AP CCDT67.The optec looks easy as there are only 2 pieces i need to get but i don't like the fact that there are no threads on it and am a little confused on how it fits together.I like how the CCDT67 fits together but am unsure of the parts i need for it to work properly with my scope. ADASCTL + CCDT67 + 20mm spacer maybe?any help would be appreciated.thanks.
Black Creek Observatory C11 EdgeHD C8 AT6RC Eon80mmED