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Moving-Image Astrometry With the Multi-Anode Microchannel Array (MAMA) Detector

Published online by Cambridge University Press:  04 August 2017

Jeffrey D. Scargle
Jeffrey D. Scargle*
Affiliation:
Theoretical Studies Branch, Space Science Division, National Aeronautics and Space Administration, Ames Research Center, Moffett Field, California 94035 USA (415-965-6330)

Abstract

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Consider the possible astrometric use of the following concept: If the image of a field of stars is moved past a high-speed detector array at a precisely known velocity, relative positions can be determined by measuring time intervals. Attractive features of this approach are: times can be measured very accurately with photoelectric detectors; a relatively large area of the sky may be swept for reference stars; the images are measured essentially on-axis; and seeing effects can be partially frozen out. The only available detector with spatial and temporal resolution and stability adequate for this technique is the MAMA. A rudimentary observational test with this detector has yielded promising results. Further observations are planned to determine whether milliarcsecond accuracy can be obtained.

Type
V. Small Field Photoelectric Astrometry
Information
Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 353 - 368
Copyright
Copyright © Reidel 1986 

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