Click here for a 50% resolution image of M 20 (1.3 Mb)

Click here for a high resolution image of the core of M 20 (1.8 Mb)

Click here for an image of a stellar jet in M 20 alongside a HST image (205 Kb)

 

 

 

The Details
Object
M 20 The Trifid Nebula in Sagittarius
Optics
Astro-Physics 12" Mak-Cass f/8
Platform
Astro-Physics 1600 Mount with absolute encoders
Camera
FLI 16803 Proline CCD
Filters
Tru-Balance LRGB Gen 2 filter set
Date
26/27 June 2014
Location
Las Campanas Observatory, Chile
Exposure
H-alpha 9 x 900 sec; L 7 x 600 sec; RGB 5 x 450 sec (all 1x1 bin)
Software
ACP, Maxim DL/CCD, CCDStack 2, Photoshop CS5
Orientation
Field of view: 52' x 52' centered on RA 18h02m43s
DEC-22°57'51" (2000). North angle180.4°; east 90° CCW from north
Notes
M20, the Trifid, is a combination emission and reflection nebula in the constellation Sagittarius.  Its name is derived from the dark lanes trisecting the emission portion of the nebula, a feature identified by American astronomer Edward Emerson Barnard and cataloged as Barnard 85.  Nebulae are notoriously difficult to determine the distance to, with M20 estimated in the range of 5200 to 9000 light-years.

 

 

 

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