...DEP¹

Delft Electronics Products BV, 9300AB Roden, NL.

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... respectively²

Respectively manufactured by the KEK Laboratory, Japan, supplied by J.Seguinot, Collège de France, and by Matsushita Company, Japan, supplied by E. Nappi, University of Bari, Italy.

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...photo-diodes³

A product issuing from a collaborative development project with INFN (Italy) and Southampton University (UK), with funding from the European Union.

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... sigma⁴

The sigma is defined as being the standard deviation from a Gaussian fit to the pedestal distribution.

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... used⁵

To improve statistics, this constraint is relaxed slightly on the central telescope plane, by requiring that the beam pass through one of three neighbouring pixels.

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