Home Index page Previous image Next image
Click to view the full size image:
2000 x 1601, 1.06 MB
M20 / Trifid Nebula

Classification: Reflection/Emission Nebula / M20 / NGC6514 / Sh2-30
Constellation: Sagittarius (SGR)
Object Location: Ra 18h 03m 11s Dec -23° 01’47° (current)
Size & Distance: 20.0 x 20.0 Apx 5200 light years.

Date & Location: 06-13-2015 Palomar Mountain, CA.
Exposure: LRGB; 60, 60, 60, 120, All 15min. (bin 1x1)
Optics: Telescope Engineering Company APO180FL @ f/5.23 using an Astro-Physics TCC160 F/L 941mm.
Mount: Astro-Physics 1200 GTO / ATS 10x36 pier.
Camera: FLI-MLx694 @-20c / CFW2-7 / FLI-Atlas focuser / Guided by SBIG ST-I / w OAG.
Filters: Arstodon G2 LRGB
Software: MaxImDL 6.08, Photoshop CS5, CCDStack 2.82, Topaz Labs.

Notes: Sky conditions: Good seeing, No wind, Temp low 60’s
Image Field of view is 36.4 x 45.5 arcmin.
This image was an Astronomy Magazine Picture Of The Day. Oct, 2015

The Trifid Nebula M20 and as NGC 6514 is an H II region located in Sagittarius. It was discovered by Charles Messier on June 5, 1764. 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 trifurcated appearance; these are also designated Barnard 85).