Trifid Nebula and M21 Open Cluster
|
M20 & M21 |
|
 |
Object |
| Type |
Diffuse Nebula |
| Constellation |
Sagittarius |
| Distance |
5,200 ly |
| Magnitude |
9 |
| Angular
Size |
28 arc min |
| Size |
|
| More
Info |
SEDSAPODEssay by Robert Gendler © |
|
Image |
| Date |
8/31/2008 |
| 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 (KAI-2020M) |
| Focuser |
Robo-Focus |
| Filters |
CFW10A, Astrodon RGB |
| Software |
CCD Commander, Maxim DL, CCDStack, Photoshop |
|
|
Site
and content copyright ©2005-2010 Behyar Bakhshandeh.
All rights reserved.
|
|
