Celestial hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  Dumbbell nebula  ·  M 27  ·  NGC 6853
M27, the Dumbbell Nebula in Vulpecula, Michael Watson
M27, the Dumbbell Nebula in Vulpecula
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M27, the Dumbbell Nebula in Vulpecula

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Description

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Photographed at Algonquin Provincial Park, Ontario, Canada

* Temperature 13 degrees C.

Total exposure time: 15 minutes

From Wikipedia:

"The Dumbbell Nebula (also known as Apple Core Nebula, Messier 27, M 27, or NGC 6853) is a planetary nebula in the constellation Vulpecula, at a distance of about 1,360 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 popular observing target in amateur telescopes."

What we are seeing is the visible remains of a low-mass star's expelled gaseous outer-envelope, leaving an X-ray hot white dwarf at the centre.

Stars to about 17th magnitude are visible in this image. The central star in the nebula is magnitude 14.0.

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Nikon D810a camera body on Explore Scientific 152 mm (6 inch) refracting telescope

Mounted on Astrophysics 1100GTO equatorial mount

15 stacked frames; each frame:

ISO 5000; 1-minute exposure at f/8, unguided

(with LENR - long exposure noise reduction)

Stacked in RegiStar;

Processed in Photoshop CS6 (brightness, contrast, levels, sharpening)

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M27, the Dumbbell Nebula in Vulpecula, Michael Watson