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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.

Information

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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