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.

Crediti:

ESO

Riguardo l'immagine

Identificazione:fors2_spectrum
Tipo:Osservazione
Data di rilascio:Mercoledì 09 Aprile 2014 11:42
Grandezza:2036 x 2068 px

Riguardo all'oggetto

Nome:FORS2
Tipo:Unspecified : Technology : Observatory : Instrument
Categoria:Paranal

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Colori e filtri

BandaTelescopio
Very Large Telescope
FORS2

 

Vedere anche