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.

Källa:

ESO

Om bilden

ID:eso0313d
Typ:Observation
Publiceringsdatum:13 maj 2003
Relaterade pressmeddelanden:eso0313
Storlek:1121 x 983 px

Om objektet

Namn:HIC 69495
Typ:Milky Way : Star
Kategori:Stars

Bildformat

Originalstorlek
362,4 kB
Stor jpeg
61,7 kB
Skärmstor jpeg
59,1 kB

Färger och filter

BandVåglängdTeleskop
Infrarött
K
2.2 μmVery Large Telescope Interferometer
AMBER

Exposure time: 100s