Object | |
| Description: | The Butterfly Nebula in Emission-Line |
| Type: | Nebula |
| Constellation: | Cygnus |
| Distance: | 5,000 ly |
Image | |
| Date: | September 6, 2007 |
| Location: | Carlsbad, CA |
| Exposure: | Ha 8x15 (bin 1x1) |
Equipment | |
| Optics: | Takahashi FS-60C Refractor |
| Focal Length: | 354mm @f/5.9 |
| Mount: | Astro-Physics 900GTO |
| Camera: | SBIG ST-2000XM |
| Focuser: | Robo-Focus |
| Filters: | CFW10A, Astrodon 6nm Ha |
| Software: | CCD Commander, Maxim DL, CCDStack, Photoshop |
