Large-scale photographic observations, photometry colorimetry and polarimetry of cometary tails

Details Large-scale photographic observations, photometry colorimetry and polarimetry of cometary tails Large-scale photographic observations, photometry colorimetry and polarimetry of cometary tails

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ncgb.conf..243l&link_type=abstract

IN: Workshop on the Need for Coordinated Ground-Based Observations of Halley's Comet, Paris, France, April 29, 30, 1982, Proceed

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Astronomical Photography, Astronomical Photometry, Colorimetry, Comet Tails, Halley'S Comet, Polarimetry, Calibrating, Data Reduction, Schmidt Cameras

Scientific paper

The use of large-scale photographic observations to characterize the dust tails of comets is discussed, with emphasis on plans being developed for observing Halley's Comet in 1986. The techniques used to investigate the geometric structure of the dust tail and its evolution (including detached structures, bursts, striae, and large-scale extensions), the integrated magnitude from blue to far IR, and color and polarization parameters are reviewed and illustrated with data and images from recent studies of other comets. The requirements for a network of identical cameras for Halley observations are examined: minimum 30-deg field of view, spectral coverage and filter separation, polarizers, calibration, color emulsions, and data-reduction schemes. Many of the problems inherent in ground observations programs could be avoided by using a space instrument such as the very-wide-field camera flown on the first Spacelab mission; this device is briefly described.

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