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Contains:  IC 1795, NGC 896
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NGC 896 - Fish Head Nebula (First Light), 


            Douglas J Struble
NGC 896 - Fish Head Nebula (First Light)

NGC 896 - Fish Head Nebula (First Light)

Technical card

Resolution: 4216x3372

Dates:Oct. 17, 2018Oct. 18, 2018Oct. 19, 2018

Astrodon Ha 5nm: 98x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 89x120" (gain: 200.00) -20C bin 1x1
Astrodon SII 3nm: 100x120" (gain: 200.00) -20C bin 1x1

Integration: 9.6 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 8.94 days

Avg. Moon phase: 66.03%

Bortle Dark-Sky Scale: 6.00 job: 2320499

RA center: 36.658 degrees

DEC center: 62.100 degrees

Pixel scale: 0.647 arcsec/pixel

Orientation: 178.513 degrees

Field radius: 0.485 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


This is first light with my new 12" GSO F/4 Newtonian Truss. Collimation was just a hair off in my first two filters in Ha and OIII. I did tweak it by the time I got to SII. I never had a newtonian before, so collimating it is new to me.

NGC 896 (IC 1795) is an emission nebula in the constellation of Cassiopeia. It is often referred to as the Fishhead Nebula. It is a large star-forming region that is part of the Heart Nebula (IC 1805). It lies six thousand light years away and has a diameter of 70 light years. It is part of the Perseus molecular cloud.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


NGC 896 - Fish Head Nebula (First Light), 


            Douglas J Struble