gingadan.com

Sh2-108 (Emission Nebula)


Home > Sharpless > Sh2-108
Down
Movie

Sh2-108
Emission Nebula (散光星雲)
Nb EN


別名 (Other names)

Sharpless 108, Sh 2-108, LBN 245, IC 1318, Gamma Cygni nebula

星座 (Constellation)
はくちょう座 (Cyg) (Cygnus)

座標 (Coordinates)
(78.18°, 1.8°)

距離 (Distance)
1,500光年 (1,500 light-years)

Sh2-108 (IC 1318) is an emission nebula located 1,500 light years from the Earth in the constellation Cygnus.

Sh2-108 (Emission Nebula) : Picture

Sh2-108 (Emission Nebula)
Sh2-108 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
A very large area in the heart of Cygnus is where you will find SH-108. Also called IC 1318, or Gamma Cygni, SH2-108 is a bright and easy nebula to image in just about anything. It is very large, so you will need a large field of view to capture all of it. The brightest area is near the bright star Gamma Cygni and is known as The Butterfly nebula. All of SH2-108 responds to the hydrogen-alpha very well, and you can create a fantastic high contrast black and white image using just that one filter. But if you want to add color, then an HA-RGB or standard LRGB works nicely as well. The narrowband imagers need to stay around the Butterfly area because that is where the OIII and SII are the strongest. Once you leave this area, the H-Alpha is so strong that you end up with a mostly green nebula. Because of this, you still need to use more OIII and SII around the butterfly to balance the color nicely.

Sh2-108 (Emission Nebula)
Sh2-108 (Emission Nebula)
(C) http://galaxymap.org/
Sh 2-108 is sometimes called the Gamma Cygni nebula because of the foreground appearance of the F8Iab supergiant (also called Sadr). In fact this nebula lies far beyond Gamma Cygni in the depths of the Cygnus X complex of star formation regions.

This nebula is also called DWB 63 and is the location of the radio source W66. According to Avedisova, DWB 63 is ionised by Gamma Cygni, the O8 V class HD 229202 and the B2 Ib supergiant HD 193946. Gamma Cygni is now known to be located in the foreground. SIMBAD agrees with the classes for the other two ionising stars.

Avedisova includes Sh 2-108 in star formation region SFR 78.18+1.82 along with the supernova remnant DR4, the infrared star cluster [BDB2003] G077.46+01.76 and numerous other nearby HII regions.

Sh2-108 (Emission Nebula)
Sh2-108 (Emission Nebula)
(C) Erik Larsen
This picture shows IC 1318 / gamma Cyg nebula, NGC 6914, IC 1311, NGC 6888 / Crescent nebula in the lower left as well as some other nebulous regions

Sh2-108 (Emission Nebula) Sh2-108 (Emission Nebula)
Sh2-108 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
Sh2-108 (Emission Nebula)
(C) Erik Larsen
Up
Up

Sh2-108 (Emission Nebula) : Movie

Up
Home > Sharpless > Sh2-108
Up

gingadan.com ブログパーツ