ROSI: a new cryogenic solution for the CCD on the Schmidt focal planes

Fernando Pedichini; Roberto Speziali; Francesco D'Alessio; Andrea Di Paola

doi:10.1117/12.395497

16 August 2000 ROSI: a new cryogenic solution for the CCD on the Schmidt focal planes

Fernando Pedichini, Roberto Speziali, Francesco D'Alessio, Andrea Di Paola

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395497
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

In this paper we present the new optical camera ROSI mounted at the 60/90/180 Schmidt telescope of the Campo Imperatore Station. We have developed a new LN₂ compact cryostat designed to be mounted directly at the internal focus of the telescope and optimized to obtain a very long duration of the cryogenic liquid. The instrument is based on a 2K by 2K thinned EEV cooled down to 180K and despite of the reduced capacity of the vessel the overall holding time of LN₂ is greater than 10 hours, providing a long working cycle. The CCD is controlled by a modified version of the Astrocam DUO provided by LSR that offers both a high readout speed and a low noise. ROSI has been equipped with the same high transmission filter set use din SUSI2 provided by CETEV. The computer design of the entire instrument allows a negligible obscure of the light path, comparable to the traditional one of the Schmidt telescopes equipped with photographic plates.

Citation Download Citation

Fernando Pedichini, Roberto Speziali, Francesco D'Alessio, and Andrea Di Paola "ROSI: a new cryogenic solution for the CCD on the Schmidt focal planes", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395497

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