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Contains:  Horsehead nebula, IC 434, NGC 2023, NGC 2024, The star Alnitak (ζOri)
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The Horsehead and the Flame, 


            Frank Kane
The Horsehead and the Flame
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The Horsehead and the Flame

Technical card

Dates:Jan. 26, 2020Feb. 3, 2020Feb. 4, 2020

Astronomik Ha 1.25" 6nm: 30x600" -10C bin 1x1
Astronomik L R G B: 128x120" -10C bin 1x1

Integration: 9.3 hours

Avg. Moon age: 6.62 days

Avg. Moon phase: 46.58%

Bortle Dark-Sky Scale: 7.00

Basic astrometry details job: 3225512

RA center: 5h 41' 8"

DEC center: -2° 5' 27"

Pixel scale: 1.114 arcsec/pixel

Orientation: 83.618 degrees

Field radius: 0.636 degrees

Resolution: 3290x2461

Data source: Backyard


The Horsehead and Flame nebulas, with about 10 hours of time on it. Ha was used as luminance to enhance RGB data.

The glare of Alnitak didn't affect the Ha data, but it did result in a blue halo that I couldn't entirely remove in the color image. See the revisions for a B&W Ha-only image that is a better representation of reality, without glare artifacts - but also without color :/



Frank Kane
License: None (All rights reserved)

Sky plot

Sky plot


The Horsehead and the Flame, 


            Frank Kane