Comet Wirtanen

Four consecutive exposures of Comet Wirtanen recorded on December 9, 2001, with the FORS2 multi-mode instrument at the 8.2-m VLT YEPUN Unit Telescope.

The images have been combined to show the motion of the Comet relative to the background stars.

Comet Wirtanen was located in the southern constellation of Sagittarius, rather low over the western horizon. The first two exposures were made through a standard R-filter and lasted 300 sec each (airmass 2.4 - 2.5); they were followed by two V-exposures of 250 (airmass 2.7) and 200 (2.8) sec, respectively. The seeing at this low altitude was 1.0 - 1.2 arcsec. The measured magnitudes of the nucleus were R = 22.6 and V = 23.4 (both ± 0.1). North is up and east is to the left.

Crédit:

ESO

À propos de l'image

Identification:eso0206b
Type:Observation
Date de publication:26 février 2002
Communiqués de presse en rapport:eso0206
Taille:400 x 420 px

À propos de l'objet

Nom:Comet Wirtanen
Type:Solar System : Interplanetary Body : Comet
Catégorie:Solar System

Formats des images

Grand JPEG
171,6 Kio
JPEG taille écran
425,8 Kio

Fonds d'écran

1024x768
381,1 Kio
1280x1024
532,4 Kio
1600x1200
655,0 Kio
1920x1200
657,8 Kio
2048x1536
854,3 Kio

Couleurs & filtres

DomaineTélescope
Visible
R
Very Large Telescope
FORS1
Visible
V
Very Large Telescope
FORS2