Planetary Nebula M27 (NGC 6853, Dumbbell nebula), type 3a+2, in Vulpecula
Ha-OIII-LRGB combination (Click for a larger view 1300 x 1300 px)
Details
Planetary Nebula M27 (NGC 6853, Dumbbell nebula), type 3a+2, in Vulpecula
Probably discovered by Hodierna before 1654. Independently discovered by Charles Messier 1764.
| Right Ascension |
19 : 59.6 (h:m) |
| Declination |
+22 : 43 (deg:m) |
| Distance |
1.25 (kly) |
| Visual Brightness |
7.4 (mag) |
| Apparent Dimension |
8.0 x 5.7 (arc min) |
| Seeing: |
Pickering 8 rating - Good to Excellent |
| Optic(s): |
Celestron 11" Schmidt Cassegrain + Alan Gee II telecompressor @ f/6.3 |
| Mount: |
CGE equatorial |
| Camera: |
Artemis Art 4021 - monochrome cooled CCD camera – 2048 x 2048 px ; 16x16 mm; 7.4 µm x 7.4 µm |
| Filters: |
Astronomics Ha, OIII, L, R, G, B set, SupaSlim TrueTechnology Computerized Filter Wheel |
| Dates/Times: |
2011-08-01 UT 22:20:51 |
| Location: |
Rozhen Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42" |
| Exposure Details: |
Ha = 30 min, Oiii = 30 min, L = 30 min, R = 30 min, G = 30 min, B = 30 min, (Bin1), Subexposures Ha, OIII = 10 min, LRGB = 5 min, Total Exposure Time - 180 min |
| More details: |
Dark frames reduction |
| Guiding: |
Starlight Xpress Lodestar Autoguider on APO 90/600+barlow @ f/13.4 |
| Processing: |
PixInsight / PS |
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