Trifid Nebula and M21 Open Cluster
|
M20 & M21 |
|
|
Object |
Type |
Diffuse Nebula |
Constellation |
Sagittarius |
Distance |
5,200 ly |
More
Info |
|
|
Image |
Date |
31 Aug 2008 (Summer) |
Place |
Palomar Mountain, CA |
Exposure
Data |
RGB 60:60:60 mins @ -15C
R 6x10, G 6x10, B 6x10 (bin 1x1) |
Notes |
|
|
Equipment |
Optics |
Takahashi FSQ-106N Refractor |
Focal
Length |
530mm @f/5 |
Mount |
Astro-Physics 900GTO |
Camera |
SBIG ST-2000XM |
Focuser |
Robo-Focus |
Filters |
CFW10A, Astrodon RGB |
Software |
CCD Commander, Maxim DL, CCDStack, Photoshop |
|
|