Planetary nebula in the constellation vulpecula.
The Dumbbell Nebula (also referred to as Messier 27 or NGC 6853) is a bright planetary nebula and is located in the constellation of vulpecula, just next to the head of the constellation of Swan.
|Date of exposures:||20.08.2022, 23.08.2022, 24.08.2022, 27.07.2015, 31.07.2015, 01.08.2015, 02.08.2015|
|Exposures:||Ha 5nm: 68 x 480 Sec., [OIII]: 36 x 480 Sec., RGB: 27 x 180 Sec.,
and from 2015: 16 x 1200 Sec. a. 10 x 300 Sec., Sum: 21,2 hrs.
|Telescope:||10'', F4 Newton|
|Focal length:||1000 mm|
|Filter:||Astrodon RGB E-Series, HA 5nm, O[III] 3nm|
|Camera:||ASI 1600 MMC Pro|
|Guiding:||Off Axis Guider, Lodestar|
It is the remnant of an old star which has ejected its gas shell. In the center you can still recognize this star, it is now a white dwarf. The Dumbbell Nebula got its name from Sir William Herschel because of its elongated shape. The nebula expands at 6.8 arc seconds per century and was discovered by Charles Messier on July 12, 1764.
The photo is a combination of a bicolor image (Ha & OIII) and RGB images for the star colors, which gives a more natural look. The image field here shows only about 50% of the original resolution to show better details of the nebula.
Older version from 2015:
Cooperation from 2015 with Frank Iwaszkiewicz: