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A raw spectrum obtained with FORS
A long, narrow slit isolates a small strip of sky. On this image, the slit is vertical. The spectrograph then splits the light from the slit into its individual colours, each point of the slit forming a horizontal rainbow. In this spectrum, the light from a distant galaxy appears as a faint horizontal line, peppered with bright dots corresponding to the colours emitted by the gas in the galaxy.
Crédit:ESO
À propos de l'image
Identification: | fors2_spectrum |
Type: | Observation |
Date de publication: | 9 avril 2014 11:42 |
Taille: | 2036 x 2068 px |
À propos de l'objet
Nom: | FORS2 |
Type: | Unspecified : Technology : Observatory : Instrument |
Catégorie: | Paranal |
Fonds d'écran
1024x768
337,6 Kio
1280x1024
602,7 Kio
1600x1200
988,6 Kio
1920x1200
1,3 Mio
2048x1536
1,8 Mio
Couleurs & filtres
Domaine | Télescope |
---|---|
Very Large Telescope FORS2 |