Imaging telescopes or lenses: Lacerta / Skywatcher 8" Newton f4
Guiding telescopes or lenses: Skywatcher 8x50 Finder
Guiding cameras: Atik GP · ZWO ASI 1600MM cool
Focal reducers: GPU f4 Newton coma corrector
Software: Adobe Photoshop CS5 CS5 · PixInsinght
Filters: Astrodon 3nm OIII · Astrodon 3nm Ha · Astrodon E-Series 1,25" RGB
Dates:Aug. 2, 2017 , Aug. 29, 2017 , Aug. 30, 2017 , June 27, 2019 , June 30, 2019 , Nov. 5, 2020 , Nov. 6, 2020
Frames:
Astrodon 3nm Ha : 85x600" bin 1x1
Astrodon 3nm OIII: 22x300" bin 1x1
Astrodon 3nm OIII: 50x600" bin 1x1
Astrodon E-Series 1,25" RGB: 44x120" bin 1x1
Astrodon E-Series 1,25" RGB: 34x300" bin 1x1
Astrodon E-Series 1,25" RGB: 66x60" bin 1x1
Integration: 29.7 hours
Avg. Moon age: 16.62 days
Avg. Moon phase: 53.66%
Astrometry.net job: 4011682
RA center: 20h 33' 59"
DEC center: +45° 38' 2"
Pixel scale: 1.172 arcsec/pixel
Orientation: 358.401 degrees
Field radius: 0.552 degrees
Resolution: 2686x2064
Locations: Rooftop Terrace, Vienna - City Center, Austria
Data source: Backyard
Sharpless 2-112 emission nebula lies approximately 5,500 light years away within the constellation of Cygnus – nearby to the bright star Deneb. The nebula’s H-alpha emissions are stimulated by the mag. +9.2 star BD+45 3216 a little to the right of the nebula´s center. The north-western side of the nebula is separated by a dark band of dust. There is abundant Ha nebulosity surrounding Sh2-112 together with several dark dust clouds.
The image comprises a combination of Ha, [OIII] and RGB frames taken between 2017 and 2020 during seven different nights - almost 30 hours of exposure from the center of Vienna.
H-alpha only:
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