Author Topic: NGC 6946 Fireworks Galaxy and SN 2017eaw  (Read 294 times)


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NGC 6946 Fireworks Galaxy and SN 2017eaw
« on: August 11, 2017, 02:24:30 PM »
This is an 11.7 hour HaLRGB of the Fireworks Galaxy and its most recent supernova, SN 2017eaw (in the upper arm at 1 o'clock).  Taken during three different nights at the Bear Gulch Users Area at Pinnacles N.P., East. Conditions were excellent the first night with SQM readings to 21.80 (21.90 for another imager) and quite good the other two nights.  Great place.

Link at


8/23/17 REPROCESSED with DRIZZLE plus new PI 1.8.5 features of: Local Normalization, Large-scale Pixel Rejection. Both this version and previous versions used PI 1.8.5 but with the new Photometric Color Calibration only.
« Last Edit: Yesterday at 10:42:16 PM by jeffweiss9 »