Quote:
Originally Posted by glend
I believe the ASI1600 has a Global shutter there is certainly no mechanism i can detect, and the sensor is visible at all times. It can take 0" Bias frames when driven by SGPro, so i have to conclude no shutter. With -40C of cooling available i don't see dayyime flats as a problem especially at this time of year. I normally shoot lights at -25C.
Vignetting is not a problem with my 36mm filters and the camera screwed directly to the wheel. There is no more than maybe 12-15mm of separation. Illumination is equal across the field.
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That's very good then. Vignetting also comes from the scope and the F ratio of the scope, whether there are any reducers/flatteners/adapters, off axis guiders etc etc. What aperture scope are you using?
Greg.