Waid Observatory

Object: M20 - The Trifid Nebula
Aug. 5-6-7, 2021    -    Location: Davis Mountains west of Fort Davis, TX
Telescope: 10 in. RC   Mount: Paramount MX   Camera: Apogee Alta F8300M
Exposure: L = 30x5 min.  -  R & B = 30x5 min. each  -  G = 29x5min. (All bin 1x1)
Click on the image below to view at higher resolution.

Messier 20


M20 - The Trifid Nebula 1

Discovered by Charles Messier in 1764.

The Trifid Nebula derives its name from the three lobed appearance formed by a dark obscuring cloud of material traversing the red emission nebula.  A cluster of very hot young stars at its center energizes the nebula.  The blue nebula is a reflection nebula. The color is due to light from the bright star at its center reflecting from interstellar dust.  The effect is similar to the same phenomena that makes our sky appear blue.  The Trifid is located in the constellation Sagittarius approcimately 4,100 light-years from the Earth.


Copyright Donald P. Waid