Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  B85  ·  M 20  ·  M 21  ·  NGC 6514  ·  NGC 6531  ·  Sh2-30  ·  Trifid Nebula
Getting plate-solving status, please wait...
M20 - The Trifid Nebula, 



    
        

            Patrick Cosgrove
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M20 - The Trifid Nebula

Getting plate-solving status, please wait...
M20 - The Trifid Nebula, 



    
        

            Patrick Cosgrove
Powered byPixInsight

M20 - The Trifid Nebula

Imaging telescopes or lenses: William Optics FLT 132 Triplet APO f/7

Imaging cameras: ZWO ASI294CC Pro

Mounts: iOptron Cem60

Guiding telescopes or lenses: William Optics 50mm Guidescope

Guiding cameras: ZWO 290MM Mini

Software: IDEIKI Astro Photography tool  ·  phd2

Filters: Optolong UV-IR Cut Filter

Accessory: Pegasus Astro FocusCube 2  ·  QHYCCD Polemaster


Dates:June 11, 2020

Frames: 27x120" (54')

Integration: 54'

Avg. Moon age: 20.54 days

Avg. Moon phase: 66.82%


Astrometry.net job: 3598554

RA center: 18h 3' 12"

DEC center: -22° 53' 12"

Pixel scale: 1.048 arcsec/pixel

Orientation: -105.120 degrees

Field radius: 0.729 degrees


Resolution: 4144x2822

Data source: Backyard

Description

Messier 20, commonly know as the Trifid Nebula, is a Hydrogen II region in Sagittarius that is located about 5000 light years from earth. The name "Trifid" means "divided into three lobes" and this describes the impression when seen visually in a Telescope. This object is a combination of an open cluster of stars, an emission nebula (the red portion) and a reflection nebula (the blue portion), making it a rich target for astrophotography. The dark lanes are concentrations of dust and gas that form nurseries for the formation of new stars.

This is my first attempt on M20 and is the result of 27 stacked images of two minutes each. It was a very windy evening and my guiding was the worse I have ever seen, but my star images still came out pretty round so I appear to have gotten away with it!

Shot with a William Optics 132mm FLT APO refractor on a IOptron CEM60 mount. Camera was a ZWO ASI294MC-Pro. 30 Dark, 45 flat, and 45 bias calibration exposures. Processed via DeepSky Stacker, Pixinsight and Photoshop. This is preliminary processing to assess last nights capture. I will more carefully reprocess this on a cloudy night!

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M20 - The Trifid Nebula, 



    
        

            Patrick Cosgrove