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.

Crédit:

ESO

À propos de l'image

Identification:isaac_spec_cc
Type:Photographique
Date de publication:13 mars 2015 03:07
Taille:1024 x 1024 px

À propos de l'objet

Nom:ISAAC
Type:Unspecified : Technology : Observatory : Detector
Catégorie:Paranal

Formats des images

Grand JPEG
677,7 Kio
JPEG taille écran
530,5 Kio

Zoomable


Fonds d'écran

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

 

Voir aussi notre