A raw image straight from the VISIR instrument on the VLT

As the instrument observes in the thermal infrared, the individual exposures are extremely short, and the final image are obtained by combining hundreds, or even thousands, or individual snapshots obtained at slightly different positions. This technique allows the astronomers to beat the incredibly bright background from the sky and from the telescope itself, as it emits brightly at these wavelengths. It also allows them to correct for the many defects of the tiny detector, which appear here as dark and bright spots, as well as structure in the background. This image was one of the many that was used to produce an impressive view of the nebula around the bright star Betelgeuse.

Forrás:

ESO

About the Image

Id:visir_cc
Típus:Observation
Közzététel napja:2014. október 1. 2.20
Size:256 x 256 px

About the Object

Név:VISIR
Típus:Unspecified : Technology : Observatory : Instrument
Category:Paranal

Képformátumok

Large JPEG
60,9 KB
Screensize JPEG
311,0 KB

Nagyítható


Háttérképek

1024x768
294,5 KB
1280x1024
404,6 KB
1600x1200
507,2 KB
1920x1200
537,5 KB
2048x1536
711,6 KB