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.
Crédit:ESO and P. Kervella
À propos de l'image
Identification: | eso0927b |
Type: | Observation |
Date de publication: | 29 juillet 2009 |
Communiqués de presse en rapport: | eso0927 |
Taille: | 1230 x 1230 px |
À propos de l'objet
Nom: | Betelgeuse |
Type: | Milky Way : Star : Evolutionary Stage : Red Giant |
Distance: | 650 années lumière |
Catégorie: | Stars |
Fonds d'écran
Couleurs & filtres
Domaine | Longueur d'onde | Télescope |
---|---|---|
Infrarouge NB_1.04 | 1.04 μm | Very Large Telescope NACO |
Infrarouge NB_1.08 (He I) | 1.083 μm | Very Large Telescope NACO |
Infrarouge NB_1.09 (P_gamma) | 1.094 μm | Very Large Telescope NACO |
Infrarouge NB_1.24 | 1.237 μm | Very Large Telescope NACO |
Infrarouge NB_1.26 [Fe II] | 1.257 μm | Very Large Telescope NACO |
Infrarouge NB_1.28 (P_beta) | 1.282 μm | Very Large Telescope NACO |
Infrarouge NB_1.64 [Fe II] | 1.644 μm | Very Large Telescope NACO |
Infrarouge NB_1.75 | 1.748 μm | Very Large Telescope NACO |
Infrarouge NB_2.12 (H2 (1-0) S(1)) | 2.122 μm | Very Large Telescope NACO |
Infrarouge NB_2.17 (Br_gamma) | 2.166 μm | Very Large Telescope NACO |