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.

Källa:

ESO

Om bilden

ID:eso0206b
Typ:Observation
Publiceringsdatum:26 februari 2002
Relaterade pressmeddelanden:eso0206
Storlek:400 x 420 px

Om objektet

Namn:Comet Wirtanen
Typ:Solar System : Interplanetary Body : Comet
Kategori:Solar System

Bildformat

Originalstorlek
301,2 kB
Stor jpeg
171,6 kB
Skärmstor jpeg
425,8 kB

Skrivbordsunderlägg

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

Färger och filter

BandTeleskop
Synligt ljus
R
Very Large Telescope
FORS1
Synligt ljus
V
Very Large Telescope
FORS2