Tech-Pan UKST films: some preliminary COSMOS data comparisons.

Details Tech-Pan UKST films: some preliminary COSMOS data comparisons. Tech-Pan UKST films: some preliminary COSMOS data comparisons.

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993wfinw...3...60p&link_type=abstract

IAU Working Group on Wide-Field Imaging, Newsl., No. 3, p. 60 - 63

Astronomy and Astrophysics

Astronomy

Photographic Emulsions

Scientific paper

The authors present some preliminary findings on object parameter comparisons obtained from pairing COSMOS machine scans of 4415 film and equivalent glass plate exposures in both the "R" and "U" photometric pass-bands. The results indicate that Tech-Pan 4415 can effectively replace IIIa-F "R" and IIIa-J "U" exposures for most purposes. The image properties are well behaved and there appear to be no serious film-plate colour terms or systematic effects between repeat 4415 exposures. The enhanced imaging properties and significantly reduced emulsion noise of Tech-Pan offers the opportunity for increased scientific gains. Concerns over the astrometric reliability of the 4415 estar-substrate also appear to be unfounded.

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