There was a very bright almost full moon last night. But I decided to go "deepsky" anyway because I wanted to test my UHC-s filter.
5 min ISO800 exposures (autoguided) were much too long: full blue picture. I went back to 2min autoguided, this was more or less acceptable, but at the end still too long: next time with this moon 1min is max at ISO800.
Visible on the right is M106, a spiral galaxy. Also NGC4284 is very faintly visible. On the left is NGC4217.
With photoshop I was able to filter some moonlight out, but still too much.
All exposures were 24x2min ISO800 autoguided
Wednesday, April 16, 2008
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