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.
Crédit:ESO
À propos de l'image
Identification: | eso0322a |
Type: | Observation |
Date de publication: | 22 juillet 2003 |
Communiqués de presse en rapport: | eso0322 |
Taille: | 1533 x 1536 px |
À propos de l'objet
Nom: | W49A |
Type: | Local Universe : Nebula : Appearance : Dark : Molecular Cloud |
Distance: | 35000 années lumière |
Catégorie: | Nebulae |
Fonds d'écran
Couleurs & filtres
Domaine | Longueur d'onde | Télescope |
---|---|---|
Infrarouge J | 1.2 μm | New Technology Telescope SOFI |
Infrarouge H | 1.65 μm | New Technology Telescope SOFI |
Infrarouge K | 2.2 μm | New Technology Telescope SOFI |