A close look at Betelgeuse

Image of the supergiant star Betelgeuse obtained with the NACO adaptive optics instrument on ESO’s Very Large Telescope. The use of NACO combined with a so-called “lucky imaging” technique, allowed the astronomers to obtain the sharpest ever image of Betelgeuse, even with Earth’s turbulent, image-distorting atmosphere in the way. The resolution is as fine as 37 milliarcseconds, which is roughly the size of a tennis ball on the International Space Station (ISS), as seen from the ground. The image is based on data obtained in the near-infrared, through different filters. The field of view is about half an arcsecond wide, North is up, East is left.

Källa:

ESO and P. Kervella

Om bilden

ID:eso0927b
Typ:Observation
Publiceringsdatum:29 juli 2009
Relaterade pressmeddelanden:eso0927
Storlek:1230 x 1230 px

Om objektet

Namn:Betelgeuse
Typ:Milky Way : Star : Evolutionary Stage : Red Giant
Avstånd:650 ljusår
Kategori:Stars

Bildformat

Originalstorlek
839,1 kB
Stor jpeg
79,5 kB
Skärmstor jpeg
46,2 kB

Skrivbordsunderlägg

1024x768
53,9 kB
1280x1024
75,9 kB
1600x1200
104,4 kB
1920x1200
126,1 kB
2048x1536
157,7 kB

Färger och filter

BandVåglängdTeleskop
Infrarött
NB_1.04
1.04 μmVery Large Telescope
NACO
Infrarött
NB_1.08 (He I)
1.083 μmVery Large Telescope
NACO
Infrarött
NB_1.09 (P_gamma)
1.094 μmVery Large Telescope
NACO
Infrarött
NB_1.24
1.237 μmVery Large Telescope
NACO
Infrarött
NB_1.26 [Fe II]
1.257 μmVery Large Telescope
NACO
Infrarött
NB_1.28 (P_beta)
1.282 μmVery Large Telescope
NACO
Infrarött
NB_1.64 [Fe II]
1.644 μmVery Large Telescope
NACO
Infrarött
NB_1.75
1.748 μmVery Large Telescope
NACO
Infrarött
NB_2.12 (H2 (1-0) S(1))
2.122 μmVery Large Telescope
NACO
Infrarött
NB_2.17 (Br_gamma)
2.166 μmVery Large Telescope
NACO

 

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