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Contains:  IC 435, NGC 2024, NGC 2023, Horsehead nebula, IC 434, IC 432, The star Alnitak (ζOri)
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Horsehead Nebula NBRGB, 


            Eric Cauble
Horsehead Nebula NBRGB

Horsehead Nebula NBRGB

Technical card

Resolution: 4512x3355

Dates:Dec. 17, 2018Jan. 9, 2019

Optolong H-Alpha 7nm: 31x300" (gain: 200.00) -20C bin 1x1
Optolong LRGB 36mm: 513x120" (gain: 174.00) -20C bin 1x1
Optolong O-III: 10x300" (gain: 200.00) -20C bin 1x1

Integration: 20.5 hours

Darks: ~9

Flats: ~10

Flat darks: ~10

Avg. Moon age: 6.17 days

Avg. Moon phase: 39.88%

Bortle Dark-Sky Scale: 5.00 job: 2462004

RA center: 85.301 degrees

DEC center: -2.079 degrees

Pixel scale: 0.974 arcsec/pixel

Orientation: 94.885 degrees

Field radius: 0.760 degrees

Locations: Crowder's Mountain State Park, Kings Mountain, NC, United States

Data source: Backyard


Integration times per channel:
Ha 31x300”
OIII 10x300”
L 51x60”
R 155x120”
G 165x120”
B 163x120”



Eric Cauble
License: Attribution-NonCommercial-ShareAlike Creative Commons

Sky plot

Sky plot


Horsehead Nebula NBRGB, 


            Eric Cauble