Crescent Nebula in Emission-Line
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NGC6888 |
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Object |
| Type |
Supernova Remnant |
| Constellation |
Cygnus |
| Distance |
5,000 ly |
| Magnitude |
|
| Angular
Size |
20 arc min |
| Size |
25 ly |
| More
Info |
APOD Essay by Robert Gendler © |
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Image |
| Date |
2008-09-15 |
| Place |
Carlsbad, CA |
| Exposure
Data |
Ha 180 mins @ -10C
Ha 12x15 (bin 1x1) |
| Notes |
|
|
Equipment |
| Optics |
Takahashi MT200 |
| Focal
Length |
1200mm @f/6 |
| Mount |
Astro-Physics 900GTO |
| Camera |
SBIG ST-2000XM (KAI-2020M) |
| Focuser |
|
| Filters |
CFW10A, Astrodon 6nm Ha |
| Software |
Maxim DL, CCDStack, Photoshop |
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