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Technical Aspects of the New AAO/UKST Hα Interference Filter

Published online by Cambridge University Press:  05 March 2013

Quentin A. Parker  and
Joss Bland-Hawthorn
Quentin A. Parker
Affiliation:
Anglo-Australian Observatory, Siding Spring Mountain, NSW 2357, Australia; qap@aaocbn.aao.gov.au
Joss Bland-Hawthorn
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia; jbh@aaoepp.aao.gov.au
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Abstract

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We briefly describe technical aspects and specifications of the new UKST Hα interference filter, which is probably the largest of its kind available in astronomy. Preliminary exposures show that the filter gives excellent imaging with high overall transmission and uniformity at Hα wavelengths. This is achieved over a circular area of about 305 mm diameter or about 5·7 degrees (the so called ‘clear aperture’). The prospects for the new UKST Hα survey of the southern Milky Way with this new filter are excellent.

Keywords

instrumentation: miscellaneousmethods: laboratorytechniques: photometric
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 15 , Issue 1 , 1998 , pp. 33 - 37
Copyright
Copyright © Astronomical Society of Australia 1998

References

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