New methods of atmospheric Cherenkov imaging for gamma-ray astronomy. II. The differential position method

Details New methods of atmospheric Cherenkov imaging for gamma-ray astronomy. II. The differential position method New methods of atmospheric Cherenkov imaging for gamma-ray astronomy. II. The differential position method

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aph.....2..151f&link_type=abstract

Astroparticle Physics, Volume 2, Issue 2, p. 151-159.

Physics

10

Scientific paper

The non-uniformities in response across the face of an atmospheric Cherenkov imaging telescope camera are considered. Using the observational data from the Whipple Observatory telescope it is shown that these non-uniformities can be quite large. Although this does not adversely affect the sensitivity of the camera when used in the On/Off Tracking-mode, it is significant for the False Source method. A new technique is proposed that characterizes the non-uniformity of the camera and allows it to be corrected. It is then possible to map the gamma-ray sky in the vicinity of the source with greater sensitivity than previous methods. The technique was tested on observational data and its power was demonstrated.

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