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Contains:  IC 1795, NGC 896
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Fishhead Nebula (NGC 896, IC 1795), 


            Gary Lopez
Fishhead Nebula (NGC 896, IC 1795)

Fishhead Nebula (NGC 896, IC 1795)

Technical card

Resolution: 3983x3011

Dates:Oct. 4, 2018Oct. 6, 2018Oct. 7, 2018Oct. 8, 2018Oct. 11, 2018Oct. 23, 2019Oct. 24, 2019

Astrodon B Gen 2 E-series 31mm: 35x60" (gain: 139.00) -15C bin 1x1
Astrodon G Gen 2 E-series 31mm: 36x60" (gain: 139.00) -15C bin 1x1
Astrodon Ha 3nm-31mm: 261x180" (gain: 139.00) -15C bin 1x1
Astrodon Ha 3nm-31mm: 211x180" (gain: 200.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 106x180" (gain: 139.00) -15C bin 1x1
Astrodon R Gen 2 E-series 31mm: 35x60" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 100x180" (gain: 139.00) -15C bin 1x1

Integration: 35.7 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 22.81 days

Avg. Moon phase: 13.38%

Bortle Dark-Sky Scale: 4.00 job: 3067324

RA center: 2h 27' 48"

DEC center: +61° 57' 43"

Pixel scale: 0.862 arcsec/pixel

Orientation: 117.800 degrees

Field radius: 0.598

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard


The Fishhead Nebula is a knot of gas and dust on the western edge of the Heart Nebula (IC 1805). This bright nebula is 7,500 light years away, located in the Perseus Arm of our Milky Way Galaxy. The object is dominated by dust and hydrogen gas, with good measures of oxygen and sulfur gas.

In October 2018 I collect 25.1 hours of Ha, OIII, SII, and RGB data for a wide view of this region (1.84 degrees X 1.39 degrees) using a SW Esprit 100ED ( This year I collected an additional 10.6 hours of Ha data with a tighter FOV (1.09 degrees X 0.83 degrees) using a WO FLT132. In this image, I combined the two data sets using the new, tighter FOV data to create a luminance mask to produce a cropped version of the original 2018 image.



Gary Lopez
License: None (All rights reserved)

Sky plot

Sky plot


Fishhead Nebula (NGC 896, IC 1795), 


            Gary Lopez