Other
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2350..137f&link_type=abstract
In NASA. Ames Research Center Proc. of the Workshop on Improvements to Photometry p 137-151 (SEE N85-17892 08-89)
Other
6
Charge Coupled Devices, Image Processing, Imaging Techniques, Stars, Stellar Spectrophotometry, Telescopes, Brightness, Data Recording, Signal To Noise Ratios, Spectrometers, Stellar Spectra
Scientific paper
A 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.
Frecker J. E.
Gehrels Tom
McMillan Robert S.
Merline William Jon
Perry Marcus L.
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