Fleming's Triangular Wisp in HOO+RGB

Fleming's Triangular Wisp in HOO+RGB

Fleming's Triangular Wisp is part of the Veil Nebula complex visible in the constellation Cygnus. The nebula is the remnant of a supernova explosion that occurred roughly 10,000 years ago. Often called Pickering's Triangle, it was discovered in 1904 on a photographic glass plate by the Scottish born Williamina Fleming while working at the Harvard College Observatory under the direction of Edward Charles Pickering. Fleming was part of a team of skilled and underpaid women known as the Harvard Computers hired to analyze and process data collected by the observatory.  Sources:

Scope: Planewave 12.5" CDK
Camera: Apogee U16M w Astrodon GenII H-Alpha filter
Mount: Paramount ME guided w Astrodon MMOAG and SBIG ST-402ME
10 x 20 min in H-Alpha
15 x 20 min in OIII
7/9/9 x 10 min RGB

Acquired with TheSkyX and CCD-Commander; Reduction and RGB processing in PixInsight; HOO+RGB combine done in Photoshop

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Lucknow, Ontario, July 2022

Pure RGB:
Fleming's Triangular Wisp in RGB