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Dates:July 25, 2018
Frames: 80x180"
Integration: 4.0 hours
Avg. Moon age: 12.66 days
Avg. Moon phase: 95.08%
Astrometry.net job: 2171318
RA center: 20h 12' 27"
DEC center: +38° 15' 0"
Pixel scale: 0.864 arcsec/pixel
Orientation: 104.750 degrees
Field radius: 0.657 degrees
Resolution: 4356x3318
Locations: Mirasteilas observatory, Falera, Graubünden, Switzerland
Data source: Backyard
The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth.
Image taken at Mirasteilas observatory, Falera, Switzerland, 1288 m.
Astronomik narrow band filters.
High gain (unity) 139, offs 21
Ha 40 x 180s, OIII 40 x 300s (240 min)
Mapping:
Ha 6 nm -> R, OIII 12 nm -> G, OIII 12 nm -> B
Mirasteilas Observatory, Falera, Switzerland |
ZWO ASI1600MM/QHY163M |
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