Contains:  NGC 281
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NGC 281 Pacman Nebula (Narrowband), 


            Douglas J Struble
NGC 281 Pacman Nebula (Narrowband)

NGC 281 Pacman Nebula (Narrowband)

Technical card

Resolution: 3931x3145

Dates: Aug. 5, 2017Aug. 6, 2017Aug. 7, 2017

Astrodon Ha 5nm: 99x120" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 97x120" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 110x120" (gain: 139.00) -20C bin 1x1

Integration: 10.2 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 13.58 days

Avg. Moon phase: 97.80%

Bortle Dark-Sky Scale: 6.00 job: 1762130

RA center: 13.199 degrees

DEC center: 56.688 degrees

Pixel scale: 0.648 arcsec/pixel

Orientation: 122.571 degrees

Field radius: 0.453 degrees

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

Data source: Unknown


Been experimenting with narrowband data lately in an effort to create a more natural look. This is a Ha and OIII combination. I then created a synthetic green channel, layered more OIII back in with a sprinkle of SII.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


NGC 281 Pacman Nebula (Narrowband), 


            Douglas J Struble