Nebulae - Event Horizon

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Most viewed - Nebulae

Sharpless 2-171, The Teddy Bear Nebula in Cepheus349 viewsAn emission nebula, part of a larger nebula designated NGC 7822, about 2900 light years away.

IC1396A - Elephant Trunk Nebula 320 viewsA narrowband (Hubble Palette) image of a dense cloud of gas and dust within a much larger region of ionized gas designated IC1396, illuminated and ionized by the massive bright star HD206267 at the upper right corner of the frame. I don't find that the shape of the nebula resembles an elephant's trunk, but rather, as Michelle Evans has suggested, a dragon named Verminthrax Pejorative from the movie Dragonslayer.

Sharpless 2-155 - The Cave Nebula297 viewsA narrowband (Hubble Palette) view of an emission nebula in Cepheus; part of an ionized HII region within a larger complex containing emission, reflection and dark nebulae. About 2400 light-years away, on the edge of the Cepheus molecular cloud.

M20 - The Trifid Nebula295 viewsA combination of an open cluster of stars, an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (which accounts for the gaps dividing the nebula into lobes). About 5000 light-years away in the constellation Sagittarius.

Sharpless2-27 - The Zeta Ophiuchi Nebula292 viewsLarge but very faint emission nebula centered on the star Zeta Ophiuchi. Difficult to image because of the brightness of the star relative to the faintness of the nebula..

NGC 7822 - Star-forming region in Cepheus287 viewsIncludes the emission nebula Sharpless 171 and the star cluster Berkeley 59. Around 3000 light-years from Earth.

NGC 6888 - The Crescent Nebula282 viewsAn emission nebula in the constellation Cygnus, about 5000 light-years away from Earth; formed by the fast stellar wind from the Wolf-Rayet star WR 136 colliding with and energizing slower-moving matter ejected by the star when it became a red giant around 250,000 to 400,000 years ago.

NGC 7009 - The Saturn Nebula276 viewsA planetary nebula in the constellation Aquarius, at a distance of about 5000 light-years, with a superficial resemblance to the planet Saturn. This image does not do it justice, because a much larger telescope is required to resolve the complex internal structure of the nebula.

IC 1848 - The Soul Nebula266 viewsAn emission nebula in Cassiopeia, eastern neighbor of the Heart Nebula, IC 1805. About 6,500 light-years away, it spans 100 light-years, and is too big at that distance to fit into my telescope's field of view, so only part of it is seen here.

Sharpless2-112265 viewsEmission nebula in Cygnus, energized by the star BD +45 3216 embedded within it.

IC4603 - Core of the Rho Ophiuchi Complex260 viewsThis blue reflection nebula glows by the light of the 7.9 magnitude star SAO184376 in the center.

NGC7635 - The Bubble Nebula - H-alpha enhanced version260 viewsAn emission nebula in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a hot, massive star within a molecular cloud which contains the expansion of the bubble, preventing it from dissipating, and is also itself excited by the star. The nebula is 7 light years across and 7100 light-years away.

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