Large-format photon-counting arrays

Details Large-format photon-counting arrays Large-format photon-counting arrays

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..841r&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, July 1988, p. 841-852.

Physics

Optics

28

Astronomical Photometry, Charge Coupled Devices, Image Intensifiers, Microchannel Plates, Photometers, Computer Systems Programs, Electro-Optics, Memory (Computers), Signal To Noise Ratios, Video Equipment

Scientific paper

Recently-constructed large-format photon-counting arrays used as spectroscopic and imaging detectors are described. The photon-counting imaging systems use microchannel plate intensifiers which are optically coupled to multiple CCDs through fiber-optic conduits. S-20 quartz substrate cathodes are used in the blue and NEA Ga-As cathodes for wavelengths greater than 580 nm. Event centering results in detector resolution of 42 lp/mm at 50 pct modulation, being fundamentally limited by the microchannel plate pore diameter of 12 microns. The current systems have 1460 x 960 pixels format. The dead space between module CCDs is 30 microns. There is, in principle, no limit to this format.

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