Nebulae - Event Horizon

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Most viewed - Nebulae

Sh2-204 - Faint nebula in Camelopardalis532 viewsEmission nebula, about 12,500 light-years away

Sharpless2-275 - The Rosette Nebula532 viewsHII region in the constellation Monoceros; distance 5,200 light-years from Earth. Open cluster NGC2244, in the doughnut hole, provides the energy that makes the nebula glow.

Sh2-290 - Planetary Nebula in Cancer532 viewsAlso known as Abell 31 and PK 219+31.1. Ancient planetary nebula, about 2000 light-years away, one of the largest in the sky but very dim.

NGC7000 - The North American Nebula530 viewsNarrowband image of an H-II emission nebula in the constellation Cygnus; only part of the nebula is visible since it is too large to fit entirely in the field of view of the telescope. 2,590 light-years distant and 90 light-years across.

IC2177 - The Parrot Nebula530 viewsUsually known as the Seagull Nebula, but to me it looks more like a parrot. An HII region lying along the border between Canis Major and Monoceros.

M8 - the Lagoon Nebula (narrowband)530 viewsA giant emission nebula in Sagittarius. Distance 4100 light-years. 110 x 50 light-years in size. Part of a larger star cloud.

M8, the Lagoon Nebula, and M20, the Trifid Nebula529 viewsTwo jewels of the summer sky captured in the same frame with a bridge of nebullosity between them.

M17, the Swan Nebula (nasrrowband)529 viewsAlso known as Omega. Checkmark, Lobster and Horseshoe Nebula. 5,000 to 6,000 light-years away and 15 light-years across. Prolific star-forming region.

NGC 7023 - the Iris Nebula in Cepheus527 viewsA bright reflection nebula in the constellation Cepheus, about 1300 light-years away. Actually NGC 7023 is the star cluster inside the nebula, which is properly designated LBN 487.

NGC 2359 - Thor's Helmet526 viewsAn emission nebula in the constellation Canis Major; about 12,000 light-years away. Consists largely of interstellar gas swept up by the central star, and partly of material from the star itself, which is an extremely hot, massive Wolf-Rayet star in a short-lived pre-supernova stage.

Sharpless 2-82 - The Little Cocoon nebula in Sagitta526 viewsAlso known as the Little Trifid Nebula, LBN 129 and DG 159. Ionized by the B0.5V star HD 231616.

Sharpless2-13524 viewsEmission nebula in Scorpius.

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Event Horizon - Astronomical and Terrestrial Images