Object Information
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M20
The Trifid Nebula

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Image Acquisition/Processing Information
Designation: M20
Constellation: Sagittarius
Object Type: Gaseous Nebula
Object Name: Trifid Nebula
Year of Discovery 1764
Telescope: 12.5" RCOS Ritchey-Chretien
CCD Camera: SBIG STL-4020M
Mount: Paramount
Filter: AstroDon RGB filters
Date: October 7, 8 and 9, 2007
Location: Mayhill, NM
Subexposures: 4-15 minute subexposures
through each filter
Total Exposure Time: 3.0 hours
Image Processing Software: CCDStack, Registar,
Photoshop CS2