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


            John Schnupp
Horsehead Nebula

Horsehead Nebula

Technical card

Resolution: 3520x4656

Dates:Feb. 18, 2018

ZWO B 1.25": 3x300" (gain: 139.00) -20C bin 1x1
ZWO G 1.25": 5x300" (gain: 139.00) -20C bin 1x1
ZWO R 1.25": 5x300" (gain: 139.00) -20C bin 1x1

Integration: 1.1 hours

Avg. Moon age: 2.48 days

Avg. Moon phase: 6.83%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.70

Temperature: -1.70 job: 1945256

RA center: 85.253 degrees

DEC center: -2.397 degrees

Pixel scale: 1.547 arcsec/pixel

Orientation: 92.169 degrees

Field radius: 1.255 degrees

Locations: Georgia Shore, Georgia, VT, United States

Data source: Backyard


This is a quick process of some limited data, certainly not the best I have ever done. The primary purpose was to determine how badly the ASI1600MM-C microlensing issue is on my setup (not so good). This was also my first shot after moving the scope to the rollaway outhouse style observatory I completed this past fall. Having the scope/camera on the mount/pier all the time should dramatically help improve the amount of time I get to image. I did discover a few things I need to change with the observatory but overall the night was a success.



John Schnupp
License: None (All rights reserved)


  • Horsehead Nebula, 


            John Schnupp
  • Final
    Horsehead Nebula, 


            John Schnupp


Ran this thru HLVG.

Sky plot

Sky plot


Horsehead Nebula, 


            John Schnupp