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.

Crediti:

ESO

A proposito dell'immagine

Identificazione:eso0206b
Tipo:Osservazione
Data di pubblicazione:26 Febbraio 2002
Notizie relative:eso0206
Dimensione:400 x 420 px

A proposito delll'oggetto

Nome:Comet Wirtanen
Tipo:Solar System : Interplanetary Body : Comet
Categoria:Solar System

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Colori e filtri

BandaTelescopio
Ottico
R
Very Large Telescope
FORS1
Ottico
V
Very Large Telescope
FORS2