Trifid Nebula

Trifid Nebula

M20, NGC 6514

Constellation: Sagittarius
Ra: 18h 02m 28s
Dec: -22d 59m 19s
Distance: 5,200 light years
Image Size: 35' x 35'
North: lower left



The Trifid Nebula, M20, is a must-have object for any astrophotographer in the Constellation of Sagittarius. It has a beautiful red/magenta emission nebula, captured here with the red and Hydrogen-alpha filters, partially covered by dense tendrils of dust. The region is an intense stellar nursery for new star creation. The emission nebula smoothly transitions into a bluish reflection nebula toward the north (lower left), where gas and dust reflect light from intense, nearby blue stars. There is also a considerable amount of dust trailing off into the background. Thanks to Chris Purves, my observatory partner at our Siding Springs Observatory in Australia, for calibrating and providing the data that I processed.

Exposure: 20 hrs Total, 4 hrs each LRGB, H-a
Telescope: PlaneWave CDK20
Mount: PlaneWave Ascension A200h
Oag: Astrodon MonsterMOAG
Acquisition: CCDAutoPilot5
Calibration: CCDStack2
Observatory Site: Siding Springs,, NSW, Australia
Camera: Apogee U16M D09
Filters: Astrodon Gen2 LRGB, 3nm H-a, OIII
Guider: SBIG ST-i
Camera Operation: MaximDL5.18
Processing: Photoshop CS6, PixInstight1.8
Image Date: 07/05/2013 - 08/10/2013

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