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Contains:  NGC 2023, Horsehead nebula, IC 434
Getting plate-solving status, please wait...
IC 434 • The Horsehead Nebula in SHO, 


            Douglas J Struble
IC 434 • The Horsehead Nebula in SHO

IC 434 • The Horsehead Nebula in SHO

Technical card

Resolution: 2412x3015

Dates:Oct. 24, 2018Nov. 19, 2018Dec. 9, 2018

Astrodon Ha 5nm: 150x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 151x120" (gain: 200.00) -20C bin 1x1
Astrodon SII 3nm: 148x120" (gain: 200.00) -20C bin 1x1

Integration: 15.0 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 9.18 days

Avg. Moon phase: 62.98%

Bortle Dark-Sky Scale: 6.00 job: 3251850

RA center: 5h 41' 2"

DEC center: -2° 22' 58"

Pixel scale: 0.648 arcsec/pixel

Orientation: 112.130 degrees

Field radius: 0.348

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

Data source: Backyard


Finally finishing off a new target after over a month of cloudy skies. I wanted to attempt processing the Horsehead Nebula in the SHO palette, as it is not often done in this palette. I kept it light and airy not to kill some of the fainter nebulosity. I am still getting used to my first Newtonian; the 12" GSO Truss Imaging Newtonian. Collimation with a newt that has an offset secondary mirror and a conical primary mirror has proven to be challenging.

The Horsehead Nebula (also known as Barnard 33) is a dark nebula in the constellation Orion. The nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on a photographic plate taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because its resemblance to a horse's head.



Douglas J Struble
License: None (All rights reserved)

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IC 434 • The Horsehead Nebula in SHO, 


            Douglas J Struble