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Imaging telescopes or lenses: Celestron C14
Mounts: EQ8
Guiding telescopes or lenses: CELESTRON Travelscope 70/400
Guiding cameras: ASI120MM
Focal reducers: Optec NextGEN WideField 0.5X
Software: PHD guiding · photoshop · Stark Labs .Nebulosity 3.1 · Astroart 5
Filters: Baader Planetarium H-Alpha 7nm · Hutech IDAS LPS P2 2"
Dates:March 28, 2017
Frames: 79x480"
Integration: 10.5 hours
Avg. Moon age: 0.42 days
Avg. Moon phase: 0.20%
Astrometry.net job: 1516307
RA center: 8h 41' 31"
DEC center: +58° 12' 18"
Pixel scale: 0.911 arcsec/pixel
Orientation: 353.956 degrees
Field radius: 0.223 degrees
Resolution: 1303x1190
Locations: Backyard Observatory, Imatra, kymi, Finland
Abell 28 planetary nebula is very faint object in Ursa Major and you cand find many images of this object. I took 10,5 hour of data with h-alfa filter, i tried also OIII and luminance, but they were absolute zero information.
First image is single 8min light, second inverted is more stretched 79x8min and final is 79x8min vesion. You can nsee from inverted vesion some faint structures at 5 o clock and 1 o clock
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