MOS observation of spiral galaxy NGC 4303

The very efficient multi-object-slit observing technique with the multi-mode instrument FORS1 is demonstrated on the Virgo cluster galaxy NGC 4303. Nineteen moveable slits at the instrument focal plane are positioned so that the faint light from several H II regions in this galaxy can pass into the spectrograph, while the much stronger "background" light (from the nearby areas in the galaxy and, to a large extent, from the Earth''s upper atmosphere) is blocked by the mask.

Créditos:

ESO

Sobre a imagem

Id:eso0223b
Tipo:Observação
Data de divulgação:23 de Agosto de 2002
Notícias relacionadas:eso0223
Tamanho:2076 x 2073 px

Sobre o objeto

Nome:Messier 61, NGC 4303
Tipo:Local Universe : Nebula : Appearance : Emission : H II Region
Local Universe : Galaxy : Type : Spiral
Distância:40 milhão anos-luz
Categoria:Galaxies

Formatos de imagens

JPEG grande
1,9 MB

Papéis de parede

1024x768
630,8 KB
1280x1024
1004,1 KB
1600x1200
1,3 MB
1920x1200
1,5 MB
2048x1536
2,1 MB

Cores e filtros

BandaTelescópio
ÓpticoVery Large Telescope
FORS1