Comparison of the fine grain compensation hypersensitization (FAH) process with gas hypersensitizing techniques

Details Comparison of the fine grain compensation hypersensitization (FAH) process with gas hypersensitizing techniques Comparison of the fine grain compensation hypersensitization (FAH) process with gas hypersensitizing techniques

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984asph.conf...35b&link_type=abstract

In Royal Observatory Astron. Phot. 1984 p 35-43 (SEE N85-16102 07-35)

Astronomy and Astrophysics

Astronomy

Astronomical Photography, Photographic Emulsions, Photographic Processing, Photosensitivity, Atmospheric Moisture, Photographic Plates, Storage Stability, Temperature Effects

Scientific paper

The gas hypersensitization and fine grain compensation (FAH) process for treating astronomical photography plates were tested on the same emulsion. A sensitivity increase with FAH of 3.6, developed 6 days after treatment, and 3.2, for 3 days after is achieved for emulsion IIIa-J. For coarse grain plates, FAH results are inferior to gas hypersensitizing. Tests of the effects of moist air show that a nitrogen filled plateholder is needed for both processes. Combination of FAH with gas hypersensitizing is discussed.

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