Colour composite of W49A
Composite near-infrared colour image from NTT/SofI of the Giant Molecular Cloud W49A. It covers a sky area of 5 x 5 arcmin 2 and the red, green and blue colours correspond to the Ks- (wavelength 2.2 µm), H- (1.65 µm) and J-band (1.2 µm), respectively. North is up and East is to the left. The labels identify known radio sources. The main cluster is seen north-east of the region labelled "O3". The colour of a star in this image is mostly a measure of the amount of dust absorption towards this star. Hence, all blue stars in this image are located in front of the star-forming region.
Kredit:ESO
O snímku
Id: | eso0322a |
Typ: | Pozorování |
Datum zveřejnění: | 22. července 2003 |
Související články: | eso0322 |
Velikost: | 1533 x 1536 px |
O objektu
Jméno: | W49A |
Typ: | Local Universe : Nebula : Appearance : Dark : Molecular Cloud |
Vzdálenost: | 35000 světelné roky |
Kategorie: | Nebulae |
Barvy & filtry
Pásmo | Vlnová délka | Dalekohled |
---|---|---|
Infračervený J | 1.2 μm | New Technology Telescope SOFI |
Infračervený H | 1.65 μm | New Technology Telescope SOFI |
Infračervený K | 2.2 μm | New Technology Telescope SOFI |