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Sh2-73 (Emission Nebula)


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Sh2-73
Emission Nebula (散光星雲)
Nb EN


別名 (Other names)

Sharpless 73, Sh 2-73, LBN 105, MBM 40

星座 (Constellation)
ヘルクレス座 (Her) (Hercules)

座標 (Coordinates)
(37.69°, 44.55°)

距離 (Distance)
650光年 (650 light-years)

Sh2-73 is an emission nebula located 650 light years from the Earth in the constellation Hercules.

Sh2-73 (Emission Nebula) : Picture

Sh2-73 (Emission Nebula)
Sh2-73 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
This object does not do react with any of the narrowband filters, so I do not recommend using H-Alpha on this one. The object does react very well to all the color filters; I would say that red and blue do best. A nice long clear filter image does a very nice job as a luminance image. You need a lot of color data to get really strong color in this one unlike a normal LRGB which uses shorter color exposures. The green will be very weak compared to the red and blue filters. There appears to be a lot of nebula around this object, so a larger field of view may show quite a bit more nebula than is seen here.

Sh2-73 (Emission Nebula)
Sh2-73 (Emission Nebula)
(C) http://galaxymap.org/
This local molecular cloud is also known as LBN 105, MBM 40 and IREC 53. MBM 40 contains 20 to 40 solar masses of gas. There are no signs of star formation. Like several other local molecular clouds, MBM 40 has a pronounced hairpin shape.

Sh2-73 (Emission Nebula)
Sh2-73 (Emission Nebula)
(C) Palomar Observatory

Sh2-73 (Emission Nebula)
Sh2-73 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
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