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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.
Kredit:ESO
O snímku
Id: | fors2_spectrum |
Typ: | Pozorování |
Datum zveřejnění: | 9. dubna 2014 11:42 |
Velikost: | 2036 x 2068 px |
O objektu
Jméno: | FORS2 |
Typ: | Unspecified : Technology : Observatory : Instrument |
Kategorie: | Paranal |
Barvy & filtry
Pásmo | Dalekohled |
---|---|
Very Large Telescope FORS2 |