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Microspots on IIIa- Emulsions: New Results

Published online by Cambridge University Press:  26 July 2016

S.B. Tritton ,
D.H. Morgan  and
M.R. Cranston
S.B. Tritton
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, U.K.
D.H. Morgan
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, U.K.
M.R. Cranston
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, U.K.

Abstract

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This paper continues the investigations carried out at the Royal Observatory Edinburgh into the microspot problem affecting Kodak Spectroscopic plates taken with the UK 1.2m Schmidt Telescope (UKST) at Siding Spring Observatory (SSO). Over 10,000 plate inspections have been made since the previous report. Analysis of all the available data shows that UKST plates on IIIa- emulsions processed up to January 1991 continue to show evidence of microspot contamination. Various changes to the processing procedures are listed and the effects on spot formation are analyzed. The effectiveness of Rapid Selenium Toner in the original processing line and post-processing is discussed.

Type
Part Three: Photography in Wide-Field Imaging
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 151 - 156
Copyright
Copyright © Kluwer 1994 

References

Tritton, S.B., Morgan, D.H. and Cranston, M.R., 1992. ‘Astronomical Photography 1990’, ed. Heudier, J.L., Université de Nice-Sophia-Antipolis, p. 10.Google Scholar