23243What the heck....a donut near M81?
- Feb 1, 2004Would greatly appreciate any insight regarding this gremlin in my
This is 15 x 600sec with a Schuler Ir block.
ST10 XME/ Intes MK69
I took a good set of flat frames and checking the individual flats
against the master doesn't reveal anything however after calibrating
the individual image frames I get the donut pattern. Anybody seen
- Next post in topic >>