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Sh2-23 (Emission Nebula)


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Sh2-23
Emission Nebula (散光星雲)
Nb EN


別名 (Other names)

Sharpless 23, Sh 2-23

星座 (Constellation)
さそり座 (Sco) (Scorpius)

座標 (Coordinates)
(4.32°, 29.6°)

距離 (Distance)

Sh2-23 is an emission nebula in the constellation Scorpius.

Sh2-23 (Emission Nebula) : Picture

Sh2-23 (Emission Nebula)
Sh2-23 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
This object failed to pick up ant hydrogen-alpha so I suspect this is much like SH2-24 and is some kind of molecular cloud. This image was taken with standard LRGB filters for 11 hours as it is much fainter than SH2-24. Like Sh2-24, this one may not need the use of the clear filter as a luminance, you may be better off with just a longer RGB image. However, unlike SH2-24, this one is larger although you are seeing most of the object in my image. I think a wide field fast astrograph would do nicely on this one, but the cloud structure is very faint against the background sky so plan on imaging under really dark skies. However, if your field of view is wide enough, you should be able to capture SH2-23 and SH2-24 together.

Sh2-23 (Emission Nebula)
Sh2-23 (Emission Nebula)
(C) http://galaxymap.org/
There is nothing significant on this nebula in the scientific literature. It is close to the A4V star 16 Scorpii and may possibly be a faint reflection nebula.

Dean Salman has a good image of this object on his Sharpless nebula website.

Both Sh 2-23 and Sh 2-24 can be seen together in this IRAS infrared image. Sh 2-24 is the bright ellipse and Sh 2-23 is the much fainter squiggle below and to the right.

Sh2-23 (Emission Nebula)
Sh2-23 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
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