The Trifid Nebula in RGB + HOO
The Trifid Nebula in Sagittarius: above image assembled entirely via
Photoshop, bottom image the HOO assembled in PixInsight via Foraxx
script then that combined w RGB in Photoshop
Discovered by Charles Messier in 1764. The Trifid Nebula Messier 20
(M20, NGC 6514) in Sagittarius is a remarkable and beautiful object as
it consists of both a conspicuous emission nebula and a remarkable
reflection nebula component. Charles Messier discovered this
object on June 5, 1764, and described it as a cluster
of stars of 8th to 9th magnitude, enveloped in nebulosity, where the
remark on nebulosity follows only after the description of
nearby M21, and includes that object. The Trifid Nebula M20 is
famous for its three-lobed appearance.
Scope: 12.5" Planewave CDK
Camera: Apogee U16M w Astrodon GenII filters
Mount: Paramount ME guided w an Astrodon MMOAG and SBIG ST-402ME
RGB: 12/10/10 x 10 min
H-Alpha: 10 x 20 min; OIII: 10 x 20 min
Acquired with TSX and CCD-Commander
Reduction in and bulk of processing in PixInsight
Top image: Assembly of the NB and RGB plus slight sharpening via HighPassFilter in PS CC
Bottom image: Assembly of the HOO in PixInsight via Foraxx script then combining that with the RGB in PS CC
Click on the image to see it 2x this resolution and to resize it in the
browser.
Lucknow, Ontario
July 2024
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