NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
A CCD System for Photometry of Direct and Spectroscopic ImagesA charge-coupled device (CCD) for direct imagery at the focus of a ground-based telescope and for high dispersion spectroscopy of stars is evaluated. The CCD is an RCA SID 53612 thinned, buried channel array of 512x320 30-micron square pixels that are back-illuminated and refrigerated to about -60 C in a rugged, RF-shielded vacuum housing. The double-correlated sampling (integrator) readout system, the Z80 microprocessor readout control system, and the data collection system are described. The readout noise is 120 electron-hole pairs (ehp) per pixel per readout, the thermal dark current is 50 ehp/pixel/sec, and the scale of the 12-bit analog-to-digital converter is 25 ehp/AD unit. Unique features of this system are compared to other astronomical implementations of the same model of CCD.
Document ID
19850009595
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Frecker, J. E. (Arizona Univ. Tucson, AZ, United States)
Gehrels, T. (Arizona Univ. Tucson, AZ, United States)
Mcmillan, R. S. (Arizona Univ. Tucson, AZ, United States)
Merline, W. J. (Arizona Univ. Tucson, AZ, United States)
Perry, M. L. (Arizona Univ. Tucson, AZ, United States)
Scotti, J. V. (Arizona Univ. Tucson, AZ, United States)
Smith, P. H. (Arizona Univ. Tucson, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1984
Publication Information
Publication: NASA. Ames Research Center Proc. of the Workshop on Improvements to Photometry
Subject Category
Astronomy
Accession Number
85N17904
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.

Related Records

IDRelationTitle19850009583Collected WorksProceedings of the Workshop on Improvements to Photometry
No Preview Available