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| The Dumbbell Nebula (also known as Messier 27, M 27, or NGC 6853) is a planetary nebula (PN) in the constellation Vulpecula, at a distance of about 1240 light years.
This object was the first planetary nebula to be discovered; by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and its diameter of about 8 arcminutes, it is easily visible in binoculars, and a great observing target in amateur telescopes.
More informations are also available at the Wikipedia website |
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| Optics |
130 mm f/12.7 Astro-Physics EDF Refractor with Televue 2X barlow. TMB Triplet Apo 80 mm f/6 for guiding |
| Mount |
Astro-Physics AP 900GTO |
| Camera | SBIG ST-10XME. With a Remote Guiding Head |
| Filters | SBIG CFW9. Astrodon LRGB filters. Baader-Planetarium 7 nm Ha,SII,OII, filters |
| Focuser | Robofocus focuser and Focusmax software |
| Dates | July 2008. |
| Location | Lentin Observatory |
| Exposure | LRGB L= 240 minutes.bin1; R=120;G=105;B=140mn Bin2; Scale 0.85^s/pixel. T=-15°c |
| Acquisition | All data's were acquired unattended with ACP Observatory Control Software V5 DC3 Dreams and MaxIm DL 4, including sky flats , |
| Processing | MaxIm DL 4, PixInsight 1.2, Photoshop CS2. |
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Antoine Vergara