A raw image from ISAAC

This raw ISAAC image was used, combined with many others, to generate the photo at the top of this page. All the images taken with astronomical instruments are monochromatic: the information on the colour is obtained by taking exposures through different filters. In infrared light, the sky is so bright that individual exposures must be kept very short. To reach the long total exposure time needed, hundred of exposures are combined. The dark spots are defects of the detector, and the bright line in the centre marks the separation between the areas of the detector processed by different electronics.

Crediti:

ESO

Riguardo l'immagine

Identificazione:isaac_img_cc
Tipo:Osservazione
Data di rilascio:Venerdì 13 Marzo 2015 03:07
Grandezza:1024 x 1024 px

Riguardo all'oggetto

Nome:ISAAC
Tipo:Unspecified : Technology : Observatory : Detector
Categoria:Paranal

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