Nitrogen flushing during exposure of large Schmidt telescope plates

Details Nitrogen flushing during exposure of large Schmidt telescope plates Nitrogen flushing during exposure of large Schmidt telescope plates

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984asph.conf...59d&link_type=abstract

In its Astron. Phot. 1984 p 59-67 (SEE N85-16102 07-35)

Astronomy and Astrophysics

Astronomy

3

Astronomical Photography, Flushing, Nitrogen, Photographic Plates, Photographic Processing, Accuracy, Schmidt Telescopes, Spectral Sensitivity, Stellar Spectrophotometry

Scientific paper

Hypersensitized plates taken on a Schmidt telescope before and since the use of nitrogen-flushing during exposure were compared. Substantial improvements are found in large-scale and point-to-point variations in plate uniformity as a result of nitrogen flushing. Plate exposure times are slightly reduced, though such reductions are of the same level as variations found between Kodak batches. The difficulties in ensuring the smooth flow of dry nitrogen over plates as large as 14 in are very great. However, the resulting gains in uniformity and, hence, potential photometric accuracy are extremely beneficial.

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