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Sh2-46 (Emission Nebula)


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Sh2-46
Emission Nebula (散光星雲)
Nb EN


別名 (Other names)

Sharpless 46, Sh 2-46, RCW 158, Gum 80, LBN 58

星座 (Constellation)
へび座 (Ser) (Serpens)

座標 (Coordinates)
(15.18°, 3.33°)

距離 (Distance)

Sh2-46 is an emission nebula in the constellation Serpens.

Sh2-46 (Emission Nebula) : Picture

Sh2-46 (Emission Nebula)
Sh2-46 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
This object was a bit of a surprise because it has some really nice structure and is fairly bright. The object fits well in a one degree field of view so a larger telescope can do well here. The nebula has some really nice structure that a large telescope can pick up. If you have a wide field telescope you will pick up some nebulosity around the area. Sh2-46 picks up hydrogen-alpha very well because the nebula is mainly red. You can use wide band filters to take a nice color image but the H-Alpha filter helps bring out the fine detail in the nebula. Because the nebula is mostly red, the oxygen III did not pick up anything so a narrowband color image will not work well with this one.

Sh2-46 (Emission Nebula)
Sh2-46 (Emission Nebula)
(C) http://galaxymap.org/
This isolated nebula is located well above the galactic plane.

Avedisova concludes that it is ionised by the potential runaway O9.5 Iab supergiant HD 165319, which may have been ejected from NGC 6611, the central star cluster of M 16, the Eagle nebula, about 1.8 million years ago.

Sh2-46 (Emission Nebula)
Sh2-46 (Emission Nebula)
(C) Chris Deforeit

Sh2-46 (Emission Nebula)
Sh2-46 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
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