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Göttingen 2012 – scientific programme

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T: Fachverband Teilchenphysik

T 93: Gammaastronomie 5

T 93.2: Talk

Friday, March 2, 2012, 08:45–09:00, ZHG 008

Mirror Adjustment for FACT — •Ann-Kristin Overkemping — TU Dortmund, Dortmund, Deutschland

The First G-APD Cherenkov Telescope (FACT) on the Canary Island La Palma is the first Cherenkov telescope that uses semiconductor photosensors, known as Geiger-mode Avalanche Photo-Diodes (G-APD), instead of photo-multiplier tubes in the camera. In FACT the refurbished mirrors of the former HEGRA CT1 telescope are installed. In this talk I will present the adjustment and alignment of the individual mirror segments. The technique to estimate the alignment precision using CCD images and further improvement ideas will be introduced.

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