m 17

 

 

The Details
Object
M 17 The Omega or Swan Nebula in Sagittarius
Optics
12.5" RCOS Ritchey-Chretien at f/6.9
Platform
Astro-Physics 1200 GTO
Camera
SBIG ST-10XME
Filters
Custom Scientific 3nm Hydrogen-Alpha
Date
07 June 2004
Location
Mount Wilson Observatory, Mount Wilson CA
Exposure
Ha 6 x 1800 sec 1x1 bin
Software
Maxim DL/CCD, Registar, CCDSharp, Photoshop
Orientation
Field of view: 23' 24" x 15' 09" centered on RA 18h21m17s
DEC -16°11'14". North angle 208.70°; east 90° CCW from north
Notes
Unlike many other emission nebulae, this beautiful object is mainly illuminated by stars hidden within the nebula itself. M17 along with its close neighbor M16 reside together in the Sagittarius arm of the Milky Way Galaxy. M17 is estimated to have a total span of about 40 light years across and lie between 5000 and 6000 light years away from earth.

 

 

 

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