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M 27 (Dumbbell Nebula)
Technical Details: |
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| Optics: | 12" ASA Astrograph at F/6.8 |
| Mount: | ASA DDM 85 |
| Camera: | SBIG STL-11000M |
| Filters: | Astronomik RGB filters + Baader 8 nm Ha and O III filters |
| Dates/Times: | 23 and 24 June, 6 and 7 July 2011 |
| Location: | Varna, Avren |
| Exposure Details: | R = 60 min., G = 60 min.,B = 60 min., Ha = 360 min, O III = 360 min |
| Subexposures: | RGB = 5 minutes, Narrowband = 30 minutes |
| Acquisition: | CCD Soft |
| Processing: | PixInsight, Photoshop CS |
