A raw spectrum obtained with EFOSC2

A long, narrow slit isolates a small strip of sky. On this image, the slit is horizontal. The spectrograph then splits the light from the slit into its individual colours, with each point along the slit forming a vertical rainbow. In this spectrum, the light from NGC 5775, a galaxy, forms faint vertical bands. The bright vertical line is the spectrum of a star. The horizontal lines correspond to colours at which the sky itself emits light.

Credit:

ESO

About the Image

Id:efosc_spec_cc
Type:Observation
Release date:26 November 2014, 02:30
Size:1030 x 1030 px

About the Object

Name:NGC 5775
Type:Unspecified : Technology : Observatory : Instrument
Category:La Silla

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