Chromospheric Helium Imaging Photometer (an Instrument for High Time Cadence 1083-nm Wavelength Solar Observations)

The scientific motivation, design criteria, and specifications for a new ground-based instrument to observe the Sun in the He i 1083-nm spectral line is described. The instrument employs a liquid-crystal tunable Lyot-type spectral filter and an array detector that allows the full solar disk to be ob...

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Bibliographic Details
Published in:Applied optics (2004) 1998-07, Vol.37 (19), p.4270-4276
Main Authors: Elmore, D F, Card, G L, Chambellan, C W, Hassler, D M, Hull, H L, Lecinski, A R, Macqueen, R M, Streander, K V, Streete, J L, White, O R
Format: Article
Language:English
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Summary:The scientific motivation, design criteria, and specifications for a new ground-based instrument to observe the Sun in the He i 1083-nm spectral line is described. The instrument employs a liquid-crystal tunable Lyot-type spectral filter and an array detector that allows the full solar disk to be observed with a time cadence of minutes. We describe the telescope's optical and mechanical features and discuss computer interface and data-reduction procedures employed. Instrument performance during the initial year of operation of the telescope at its high-altitude site is summarized.
ISSN:1559-128X
DOI:10.1364/AO.37.004270