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Dan Posey
Uploaded
30-Nov-15
Taken
30-Nov-15
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Photo Info
Dimensions
6625 x 4990
Original file size
18.4 MB
Image type
JPEG
Color space
Uncalibrated
The Bubble NGC7635
This is three hours and forty minutes of twenty minute exposures Matt and I captured on Friday night. We used a 3nm wide hydrogen alpha. 11x20 minute frames at -30 degrees Celsius. Calibrated with bias frames.
Dan Posey