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Sh2-64 (Emission Nebula)


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Sh2-64
Emission Nebula (散光星雲)
Nb EN


別名 (Other names)

Sharpless 64, Sh 2-64, RCW 174, LBN 90, W 40

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

座標 (Coordinates)
(28.96°, 3.54°)

距離 (Distance)
1,300光年 (1,300 light-years)

Sh2-64 (RCW 174) is an emission nebula located 1,300 light years from the Earth in the constellation Serpens.

Sh2-64 (Emission Nebula) : Picture

Sh2-64 (Emission Nebula)
Sh2-64 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
This object is a fine nebula in almost any size telescope. The bright red emission nebula is easy to pick up although you need to exposure a long time to pick up the rest of the area around it. There is also a bit of a reflection nebula that adds to the image very nicely, so plan on spending quite a bit of time with the color filters. The Hydrogen-Alpha filter works well on the brightest part of the nebula, but the green filter did not pick up much at all. So I am not sure if the Oxygen III filter is any good here. A wider field of view will pick up nebula around the area, but the larger telescopes are what is needed to show off the fine detail and structure.

Sh2-64 (Emission Nebula)
Sh2-64 (Emission Nebula)
(C) http://galaxymap.org/
This is the W 40 star formation region, also called LBN 90, which is ionised by the three B1V stars W 40 OS 1a, W 40 OS 2a and W 40 OS 3a.

It is obscured by the Aquila Rift dust clouds, which are located between W 40 and our solar system. A 2010 paper using the Herschel infrared space telescope argues that the W 40 complex is embedded in the Aquila Rift at a distance of about 260 parsecs.

Sh2-64 (Emission Nebula)
Sh2-64 (Emission Nebula)
(C) Palomar Observatory

Sh2-64 (Emission Nebula)
Sh2-64 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
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