Object | |
| Description: | The Butterfly Nebula in Emission-Line |
| Type: | Nebula |
| Constellation: | Cygnus |
| Distance: | 5,000 ly |
Image | |
| Date: | May 18, 2009 |
| Location: | Joshua Tree, CA |
| Exposure: | Ha 9x10 (bin 1x1) |
Equipment | |
| Optics: | Takahashi MT200 Newtonian |
| Focal Length: | 1200mm @f/6 |
| Mount: | Astro-Physics 900GTO |
| Camera: | SBIG ST-2000XM |
| Focuser: | TAK MEF-1 |
| Filters: | CFW10A, Astrodon 6nm Ha |
| Software: | CCD Commander, MaxIm DL, CCDStack, Photoshop |
