A raw spectrum from ISAAC

A long, narrow slit isolates a small strip of sky. On this image, the slit is vertical, and slightly curved by the optics in ISAAC. The spectrograph then splits the light from the slit into its individual infrared colours, each point of the slit forming a horizontal rainbow. In the lower part, the horizontal fuzzy line is the spectrum of a faint galaxy. The glowing areas on the edge mark the position of the four amplifiers dealing each with a quarter of the detector. These electronic devices are slightly warmer than the rest, causing a minute amount of infrared light registered by the detector.

Credit:

ESO

Over de afbeelding

Id:isaac_spec_cc
Type:Fotografisch
Publicatiedatum:13 maart 2015 03:07
Grootte:1024 x 1024 px

Over het object

Naam:ISAAC
Type:Unspecified : Technology : Observatory : Detector
Categorie:Paranal

Image Formats

Grote JPEG
677,7 KB

Inzoomen


Wallpapers

1024x768
573,5 KB
1280x1024
789,7 KB
1600x1200
1,0 MB
1920x1200
1,1 MB
2048x1536
1,4 MB

 

Bekijk ook