SUNSET: 
0
Photographer:
Rod Pommier
Location of Photo:
Pommier Observatory, Portland, OR, USA
Date/Time of photo:
2024-06-12 through 2024-06-12
Equipment:
PlaneWave CDK17 on L500 mount, SBIG STL 11000 CCD camera with Baader Planetarium L, R, G, and B filters.
Description:
Messier 20, The Trifid Nebula, in Sagittarius is a rare subject that combines three classes of deep sky objects: dark nebulae, an emission nebula, and a reflection nebula. The entire object has been born out of dark nebula material of cold hydrogen and fine dust particles. The lower part is an emission nebula. The upper part is a blue reflection nebula, a region where stellar winds have driven hydrogen away, leaving dust which scatters the star's blue wavelengths of light. The correct pronunciation of this nebula's name is "Try-fid", meaning divided into three parts (by dark dust) not "trif-id", like the flower.
