M42 Closeup, Imaged with an
AP 160 EDF Refractor
160 EDF with F5.7 telecompressor
Camera: SBIG STL11000
with 10nm H-alpha filter.
Exposure 5 x 300
seconds at 3x3 binning for outer portion,
20 x 60 seconds at
1x1 binning for inner portion.
The full field image
is 1/4 size and the closeup crop is at 3/4 size.
Image by Roland Christen of Astro-Physics
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