Small Scale Distribution of Interstellar Absorption

Details Small Scale Distribution of Interstellar Absorption Small Scale Distribution of Interstellar Absorption

Feb 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968natur.217..433i&link_type=abstract

Nature, Volume 217, Issue 5127, pp. 433-435 (1968).

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Scientific paper

A SURVEY programme to take H α photographs of galactic emission nebulae has been in progress since October 1966 at the Tokyo Astronomical Observatory using the 50 cm Schmidt telescope at the Dodaira Station1. A combination of Eastman Kodak 103a-E plate and Hoya colour glass R64 5 mm thick are being used. The combination gives a passband about 300 Å wide centred at λ6563 Å, and provides H α pictures of emission nebulae after subtraction of other nebular radiations contained within the passband. Each plate is carefully calibrated by means of a tube sensitometer; the absolute brightness scale is obtained by measuring the brightness of selected star images.

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