Sh2-221
- Nebula in
Hydrogen Alpha enhanced colour
Click on the image to see it
at 2x resolution
Click HERE
for the h-alpha channel
Image Data:
Scope: AP155EDF
Camera: Apogee U16M w Astrodon Gen II H-Alpha
Mount: Paramount ME
40 x 15 minutes H-Alpha for total of 9.5 hours
8 x 10 min each of Red, Green and Blue for total of 6 hours
Flesherton, Ontario, Canada
Sept 12/13
2012
Ambient temp 16C; camera temp -10C; Moon past
full
Images acquired using CCDSoft5
Reduced, Aligned and sigma-reject combined in Maxim
Processed for contrast in PS CS5
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