The angular resolution and the brightness contrast of sources for ground-based gamma-ray Cherenkov telescopes

Details The angular resolution and the brightness contrast of sources for ground-based gamma-ray Cherenkov telescopes The angular resolution and the brightness contrast of sources for ground-based gamma-ray Cherenkov telescopes

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aph.....4..113f&link_type=abstract

ASTROPARTICLE PHYSICS, Volume 4, Issue 2, p. 113-118.

Physics

1

Scientific paper

The results of numerical calculations on the angular resolution in the field of view of Air Cherenkov Imaging Telescopes are presented. It is found that the angular resolution and the contrast depend on the pixel size of the camera. The optimal pixel size is 0.25^∘. In this case an angular resolution of about 0.4^∘ (FWHM) and a contrast with a value of close to 60 could be obtained. For selecting gamma-like events the ``Sum Selection" (SS) criterion was used. The evaluation of the gamma-flux characteristics, in particular from extended sources, necessitates the use of cameras with fields of view of more than 4^∘.

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