Imaging telescopes or lenses: PlaneWave Instruments CDK14
Imaging cameras: ZWO ASI6200MM-PRO
Mounts: Paramount MEII with Absolute Encoders
Software: Nighttime Imaging ‘N’ Astronomy N.I.N.A. · PixInsight 1.8 · StarNet++ .
Filters: Antlia RGB 50mm · Antlia Ha 3nm 50mm
Dates:Dec. 15, 2020 , Dec. 25, 2020
Frames:
123x30" (gain: 100.00) -15C
Antlia Ha 3nm 50mm: 64x300" (gain: 100.00) -15C bin 1x1
Integration: 6.4 hours
Avg. Moon age: 5.71 days
Avg. Moon phase: 40.86%
Bortle Dark-Sky Scale: 3.00
Temperature: -4.00
Astrometry.net job: 4128794
RA center: 8h 41' 23"
DEC center: +58° 13' 11"
Pixel scale: 0.603 arcsec/pixel
Orientation: 89.542 degrees
Field radius: 0.437 degrees
Resolution: 4320x2934
Locations: Dark Star Observatory, Taos, New Mexico, United States
Data source: Own remote observatory
Remote source: Non-commercial independent facility
No dithering.
No guiding.
Fixed focus position (focuser inoperative)
Abell 28 is a planetary nebula in the constellation Ursa Major with very low surface brightness and a diameter of about 5.5 arcmin. The brightness is unevenly distributed over the disk. I have found this to be one of the dimmest PNs I have imaged. The Oiii is basically non-existent, and the Ha is incredibly faint. It took a lot of careful processing to bring it out.
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