Horsehead and Flame Nebulae in Orion (Jim Thommes)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Flame Nebula · IC 431 · IC 432 · IC 434 · IC 435 · NGC 2023 · NGC 2024 · Orion B · The star Alnitak (ζOri) · The star σOri

Horsehead and Flame Nebulae in Orion, Jim Thommes

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Horsehead and Flame Nebulae in Orion

Link: http://www.jthommes.com/Astro/Horsehead-Flame.htm

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Horsehead and Flame Nebulae in Orion

Link: http://www.jthommes.com/Astro/Horsehead-Flame.htm

North is to the left in this image. This field is the iconic Horsehead / Flame Region in Orion. The Horsehead Nebula (Barnard 33) is silhouetted by the emission nebula IC 434. The Flame Nebula (LBN 953) is involved with the star cluster NGC 2024. This region is part of the Ori B Molecular cloud star forming region which spans about 360 arc minutes of sky (about three times the field of this image). This whole field of emission area is also known as Sharpless 277. There are several reflection nebulae in this field - notable are IC 431, IC 435, NGC 2023, and [RK68] 37. Besides the Horsehead nebula (B33) there are several other Dark Nebulae and clouds in this field. Also, the Sigma Orionus Open Cluster - a young star cluster of 12.8 million years - is in this field. This cluster is not in traditional astronomical catalogs but has been the subject of some study in the past few decades. These objects and some of the brighter stars are identified in the annotated image. Horizontal FOV is approximately 120 arc minutes.

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Horsehead and Flame Nebulae in Orion

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