CHARGE-COUPLED DEVICE (CCD) TRANSIT-TELESCOPE SURVEY FOR GALACTIC AND EXTRAGALACTIC VARIABILITY AND POLARIZATION.

John T. McGraw, J Roger P Angel, T. A. Sargent

Research output: Contribution to journalArticle

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Abstract

A new instrument and data handling scheme which will automatically carry out a photometric survey for variable objects to a limiting magnitude of about 20 is introduced. A polarimetric survey for objects which are 1% or more polarized, to a limiting magnitude of about 18 is described. The instrument consists of a dedicated 0. 76m, f/4. 7 Newtonian reflector which is used as a transit telescope, and two area-format CCDs which are placed in the focal plane and clocked at the sidereal rate. An effective integration time on a point on the sky of about one minute is achieved by this technique. The photometric advantages of ″averaging over″ all spatially dependent noise sources when CCDs are used in this way are discussed. A list-oriented real-time data compaction scheme is proposed to allow easy management of the vast amount of data generated by this instrument.

Original languageEnglish (US)
Pages (from-to)20-28
Number of pages9
JournalProceedings of the Society of Photo-Optical Instrumentation Engineers
Volume264
Publication statusPublished - 1980

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ASJC Scopus subject areas

  • Engineering(all)

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