NGC6990 - Western Veil Nebula
Discovered by William Herschel in 1784, the Veil is a remnant of a colossal supernova explosion that occurred approximately 5,000 - 8,000 years ago leaving delicate wisps of gas in a roughly spherical pattern in the constellation Cygnus. The filamentous nature of the gas patterns is attributed to the ultra-thin shockwaves of the explosion, which result in a visible shell only when viewed precisely edge-on. The western arm of the nebula shown in this image exemplifies the red hydrogen and blue oxygen lace work typical of these remnants. The prominent star dominating the image, 52 Cygni, is actually in the foreground.
Imaging telescope or lens: Stellarvue SV105 APO
Imaging camera: Canon EOS 700D Hutech modified
Mount: Orion Atlas EQ-G (belt mod) + EQDIR
Guiding telescope or lens: Orion 50mm GuideScope
Guiding camera: Starshoot Autoguider
Software: Nebulosity 3, Photoshop CC, Backyard EOS
Filter: Astronomik CLS Canon EOS Clip
Resolution: 4234x2846
Dates: Sept. 17, 2015
Frames: 38x600" ISO800
Integration: 6.3 hours
Darks: ~40
Flats: ~40
Avg. Moon age: 3.77 days
Avg. Moon phase: 15.27%
Bortle Dark-Sky Scale: 5.00
Temperature: 25.00
Astrometry.net job: 788004
RA center: 314.101 degrees
DEC center: 31.268 degrees
Orientation: -78.612 degrees
Field radius: 1.090 degrees
Sky Map
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