Nebulae - Event Horizon

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Most viewed - Nebulae

NGC281 - PacMan Nebula, narrowband version691 viewsA narrowband version of the PacMan, obtained with a one-shot color CMOS camera and an IDAS NBZ nebula enhancement filter, with H-alpha mapped to red and O-III to blue.

Sharpless2-313 - Planetary Nebula in Hydra690 viewsAbout 400 light-years away. Also known as Abell 35 or PN G303.6+40.0.

M42 - The Great Nebula in Orion689 viewsAnother take on the Great Orion Nebula, incorporating hydrogen-alpha data.

IC405 - The Flaming Star Nebula in Auriga685 viewsNarrowband view of an emission and reflection nebula in the constellation Auriga north of the celestial equator, surrounding the bluish, irregular variable star AE Aurigae. About 1500 light-years away.

Sh2-290 - Planetary Nebula in Cancer685 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.

Tulip Nebula - Sh2-101683 viewsAn emission nebula about 6,000 light-years away in the constellation Cygnus. The shape vaguely resembles the outline of a tulip.

NGC1499 - The California Nebula, narrowband version 682 viewsA more conventional narrowband rendition of the California Nebula, mapping H-alpha to gold and O-III to blue

IC2118, the Witch Hunt Nebula680 viewsFaint reflection nebula in Eridanus, usually known as the Witch Head Nebula, but it doesn't look much like a witch's head in this view, shot with an IDAS NBZ nebula enhancement filter, so maybe this version is best titled the "Witch Hunt Nebula." About 900 light-years away; illuminated by the nearby supergiant blue-white star Rigel in Orion.

NGC7000 - The North American Nebula679 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.

NGC 7023 - the Iris Nebula in Cepheus678 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.

Sharpless2-275 - The Rosette Nebula678 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.

Sharpless 2-82 - The Little Cocoon nebula in Sagitta678 viewsAlso known as the Little Trifid Nebula, LBN 129 and DG 159. Ionized by the B0.5V star HD 231616.

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Event Horizon - Astronomical and Terrestrial Images