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Uploaded 21-Aug-10
Taken 21-Aug-10
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19 of 74 photos
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Categories & Keywords

Category:Scenic
Subcategory:Night Sky
Subcategory Detail:
Keywords:M20, NGC 6514, NGC6514, Nebula, Trifid, Trifid Nebula
Photo Info

Dimensions3720 x 2640
Original file size5.05 MB
Image typeJPEG
Color spaceUncalibrated
Date modified21-Aug-10 14:07
Messier 20 The Trifid Nebula

Messier 20 The Trifid Nebula

About this Object:
The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars, an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent 'gaps' within the emission nebula that cause the trifid appearance; these are also designated Barnard 85). Viewed through a small telescope, the Trifid Nebula is a bright and colorful object, and is thus a perennial favorite of amateur astronomers.
Contents.


About this Photo:

Location: From my driveway in Georgetown, Texas
Telescope: Celestron C9.25 @ F10
Mount: HEQ-5
Guiding: Orion StarShoot AutoGuider / Taurus Tracker III
Camera: Canon 40D Modified
Exposure: 17 x 300 sec @ ISO 1600 (85 min.)
Acquisition: ImagesPlus 3.75 Camera Control
Processing: ImagesPlus 3.75 – Darks,Flats,Bias
Post-processing: Adobe Photoshop CS3; Gradient Exterminator; Noise Ninja; Noel Carboni's Tools;
Date(s): August 9, 2010
Temperature(s): 90-80º F