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.

Credit:

ESO

Over de afbeelding

Id:eso0206b
Type:Observatie
Publicatiedatum:26 februari 2002
Gerelateerde berichten:eso0206
Grootte:400 x 420 px

Over het object

Naam:Comet Wirtanen
Type:Solar System : Interplanetary Body : Comet
Categorie:Solar System

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Kleuren & filters

BandTelescoop
Optisch
R
Very Large Telescope
FORS1
Optisch
V
Very Large Telescope
FORS2