Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Fireworks Galaxy  ·  NGC 6946
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NGC6946 - The Fireworks Galaxy (10 SuperNova) 3.3 hours OSC, John Jennings
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NGC6946 - The Fireworks Galaxy (10 SuperNova) 3.3 hours OSC

Getting plate-solving status, please wait...
NGC6946 - The Fireworks Galaxy (10 SuperNova) 3.3 hours OSC, John Jennings
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NGC6946 - The Fireworks Galaxy (10 SuperNova) 3.3 hours OSC

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Description

This one was difficult to process. It's a spectacular galaxy. Ten supernovae have been observed in NGC 6946 in the 20th and early 21st century.  About 10 times the rate as the Milky Way.

EXPTIME     = 12000 / Total luminance exposure time in seconds.      
LUM_EXP     = 240 / Average luminance exposure time.               
LUM_CNT     = 50 / Luminance images combined.                     
LUM_DARK    = 30 / Darks used for luminance.                      
LUM_FLAT    = 30 / Flats used for luminance.                      
LUM_BIAS    = 25 / Flat-darks used for luminance.                 
LUM_TEMP    = -5 / Set temperature used for luminance.

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NGC6946 - The Fireworks Galaxy (10 SuperNova) 3.3 hours OSC, John Jennings

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