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.

Herkunftsnachweis:

ESO

Über das Bild

ID:fors2_spectrum
Typ:Beobachtung
Veröffentlichungsdatum:9. April 2014 11:42
Größe:2036 x 2068 px

Über das Objekt

Name:FORS2
Typ:Unspecified : Technology : Observatory : Instrument
Kategorie:Paranal

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Farben & Filter

SpektralbereichTeleskop
Very Large Telescope
FORS2