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.

Credit:

ESO

About the Image

Id:eso0313d
Type:Observation
Release date:13 May 2003
Related releases:eso0313
Size:800 x 705 px

About the Object

Name:HIC 69495
Type:• Milky Way : Star

Image Formats

Large JPEG
61.6 KB
Screensize JPEG
59.0 KB

Colours & filters

BandWavelengthTelescope
Infrared
K
2.2 μm Very Large Telescope Interferometer
AMBER

Exposure time: 100s

 

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