Computer Science – Performance
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984asmd.conf..307j&link_type=abstract
In NASA. Goddard Space Flight Center Astron. Microdensitometry Conf. p 307-315 (SEE N84-28020 18-35)
Computer Science
Performance
Astronomical Photography, Densitometers, Photodiodes, Photometry, Accuracy, Arrays, Performance Tests, Photographic Plates, Requirements, Scanning, Solid State Devices
Scientific paper
A diode-array based image digitizer manufactured by the Eikonix Corp. was tested to see if it can be adapted to the exacting requirements of astronomical densitometry. As the device is presently configured, a dynamic range of 400:1 can be achieved routinely, with a positional accuracy of 2 microns or better. An area of 2048 X 2048 pixels can be scanned in about 5 minutes. Preliminary tests indicate that several relatively simple enhancements can improve both the photometric and the positional accuracy of the device.
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