
M27, the Dumbbell Nebula (NGC 6853), is a planetary nebula in the constellation Vulpecula. It is located at a distance of 1,250 to 1,360 light-years from Earth and is one of the brightest and best-known planetary nebulae in the sky. The nebula has a diameter of 2.5 to 3 light-years and formed about 10,000 years ago from the expelled outer envelope of a Sun-like star in the late stage of its evolution.
At the center of the nebula is now a hot white dwarf, the remnant of the original star. Due to its extremely high temperature, it radiates predominantly in the ultraviolet and X-ray range. This high-energy radiation ionizes the gases of the nebula, resulting in the characteristic emission structures.
The Dumbbell Nebula owes its name to its striking dumbbell-shaped structure, which is particularly evident in visual observations. In narrowband images, fainter outer regions as well as an extended shell and a diffuse halo can also be seen. These features are usually difficult to detect in classical LRGB images and reveal the complex three-dimensional structure of the expanding cloud of gas.
In the image, LRGB data and narrowband exposures were blended to better illustrate the full extent of the Dumbbell Nebula
Shooting Data
| Object | M 27 (NGC 6853) |
| Name | Dumbbell Nebula |
| Object Type | Planetary Nebula |
| Constellation | Vulpecula |
| Distance | Approx. 1,250-1,360 light-years |
| Diameter | Approx. 2.5-3 light-years |
| Recording Date | May 2025 |
| Recording Location | Antequera, Andalusia/Spain |
| Telescope | Omegon Ritchey-Chretien Pro RC 203/1624 OTA |
| Focal Length | 1624 mm |
| Corrector | TS Optics Corrector for RC-Telescope 2” |
| Mount | ZWO AM5 N Harmonic Equatorial Drive |
| Camera | ZWO ASI 2600 MC Pro Color |
| Control | ZWO Asiair Plus 256GB |
| Guiding Camera | ZWO ASI 220 MM Mini Mono |
| Filters | Optolong L-Pro Optolong L-eXtreme |
| Exposure Time | LRGB: 5h Narrowband: 8h 15min Total Integration Time: 13h 15min |
| Calibration | Darks, Flats, Darkflats |
| Image Processing | PixInsight, Adobe Photoshop |