NASA array control electronics for multiple large-format infrared arrays

Details NASA array control electronics for multiple large-format infrared arrays NASA array control electronics for multiple large-format infrared arrays

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2475..106o&link_type=abstract

Proc. SPIE Vol. 2475, p. 106-117, Infrared Detectors and Instrumentation for Astronomy, Albert M. Fowler; Ed.

Astronomy and Astrophysics

Astronomy

Scientific paper

The NASA IRTF is building a multiple digital signal processor (DSP) based array electronics control system with the stated goal of having scaleable data processing power, readout, and throughput speed in order to support the latest generation 1024 X 1024 pixel arrays. This system is intended to satisfy the instrumentation requirements of SpeX, an NSF funded 1 to 5 micron medium resolution spectrograph (R approximately 2000 for 0.9 to 2.5 micrometers and separately approximately 3 to 5.5 micrometers , plus long slit single order coverage). Plans for SpeX include the use of a 1024 X 1024 InSb array for spectroscopy, and a portion of 1024 X 1024 HgCdTe or InSb array for slit field viewing and infrared guiding. This multiple array arrangement places unique requirements on the control electronics system. This paper details the design of the electronics system and its closely coupled hardware and software relationship which provides a high degree of flexibility in a simple modular framework. The design is an evolutionary upgrade of the current IRTF array control electronics system used in a 256 X 256 InSb based imager (NSFCAM), a 256 X 256 InSb, and 512 X 512 CCD in an echelle spectrograph (CSHELL) and a non-IRTF 128 X 128 Si:As BIB array based imager.

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