An Investigation of Auto Radiographically Intensified Electrographic Imagery

Details An Investigation of Auto Radiographically Intensified Electrographic Imagery An Investigation of Auto Radiographically Intensified Electrographic Imagery

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..672h&link_type=abstract

Publications of the Astronomical Society of the Pacific, Vol. 93, P. 672, 1981

Astronomy and Astrophysics

Astronomy

Scientific paper

The potential benefit of post-development intensification of electrographic film negatives using the technique of Thiourea-S35 autoradiography is investigated using microphotometric scans of uv laboratory spectra. It is shown that the technique improves the effective signal-to-noise ratio on weakly exposed regions of emulsion by increasing image density to the point where microphotometric noise becomes a minor contributor to total system noise. This allows the practical extraction of photometric information stored at (originally) very low densities on fine-grained nuclear emulsions using existing microphotometers. Gains in observing efficiency of a factor of 3 are achieved in our initial experiments.

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