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Jellyfish Nebula (IC 443) in SHO

Technical card

Resolution: 2625x2187

Dates: Jan. 18, 2018Jan. 26, 2018Feb. 12, 2018

Astronomik Ha: 140x180" (gain: 139.00) -20C bin 1x1
Astronomik OIII: 65x120" (gain: 130.00) -20C bin 1x1
Astronimik SII: 101x180" (gain: 139.00) -20C bin 1x1

Integration: 14.2 hours

Darks: ~50

Flats: ~50

Bias: ~50

Avg. Moon age: 12.25 days

Avg. Moon phase: 26.44% job: 1927705

RA center: 94.471 degrees

DEC center: 22.694 degrees

Pixel scale: 0.832 arcsec/pixel

Orientation: 3.755 degrees

Field radius: 0.395 degrees


I wanted to get a more detailed view of the Jellyfish's thick area - something that might look very interesting on a metal print, so I re-captured it with my bigger refractor and still cropped around the edges even more. Bad weather prevented me from capturing as much data as I wanted and the forecast does not look promising, so I went ahead and worked with what I had.



Chuck's Astrophot...



A little less sharp, but it retains a lot more nebulosity.

Sky plot

Sky plot


Jellyfish Nebula (IC 443) in SHO, 


        Chuck's Astrophot...