The star HIC 69495 (AO corrected image)

One of the best images obtained with MACAO-VLTI (logarithmic intensity scale). The seeing was 0.8 arcsec at the time of the observations and three diffraction rings can clearly be seen around the star HIC 69495 of visual magnitude 9.9. This pattern is only well visible when the image resolution is very close to the theoretical limit. The exposure of the point-like source lasted 100 seconds through a narrow K-band filter. It has a Strehl ratio (a measure of light concentration) of about 55% and a Full-Width- Half-Maximum (FWHM) of 0.060 arcsec.

Herkunftsnachweis:

ESO

Über das Bild

ID:eso0313d
Typ:Beobachtung
Veröffentlichungsdatum:13. Mai 2003
Dazugehörige Veröffentlichungen:eso0313
Größe:1121 x 983 px

Über das Objekt

Name:HIC 69495
Typ:Milky Way : Star
Kategorie:Stars

Bildformate

Großes JPEG
61,7 KB

Farben & Filter

SpektralbereichWellenlängeTeleskop
Infrarot
K
2.2 μmVery Large Telescope Interferometer
AMBER

Exposure time: 100s