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.
Credit:
ESO
About the Image
| Id: | eso0322a |
| Type: | Observation |
| Release date: | 22 July 2003 |
| Related releases: | eso0322 |
| Size: | 800 x 801 px |
About the Object
| Name: | W49A |
| Type: | • Local Universe : Nebula : Appearance : Dark : Molecular Cloud • X - Nebulae |
| Distance: | 35000 light years |
Colours & filters
| Band | Wavelength | Telescope |
| Infrared J |
1.2 μm | New Technology Telescope SofI |
| Infrared H |
1.65 μm | New Technology Telescope SofI |
| Infrared K |
2.2 μm | New Technology Telescope SofI |
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