interference filter Quentin A Parker , Joss Bland-Hawthorn, PASA, 15 (1), 33
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Introduction
A major UK/Australian consortium (including the authors) have just commenced a new H
survey of the galactic plane and selected regions on the UKST to take advantage of the enhanced sensitivity of Tech Pan film at H along with other beneficial emulsion properties such as high DQE (
), low noise and improved imaging (e.g. Phillipps & Parker 1993, Parker et al. 1994). A survey with an unprecedented combination of resolution, coverage and depth should result, superior to any other survey of galactic line emission at high resolution. The strong science drivers behind this new AAO/UKST survey are described elsewhere (e.g. Parker & Phillipps, 1997) and in these proceedings (e.g. Masheder, Phillipps and Parker, Parker and Phillipps). Here we concentrate on the design, specification and testing of the new, ultra-high specification single-element interference filter purchased for this purpose. The excellent quality of the filter is demonstrated.
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