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Title:
Very Narrow Band Interference Filters
Authors:
Ramsay, J. V.
Publication:
Proceedings of the Astronomical Society of Australia, Volume 1, Issue 2, page 66
Publication Date:
11/1967
Origin:
ADS
DOI:
10.1017/S1323358000010596
Bibliographic Code:
1967PASAu...1...66R

Abstract

In solar physics a need exists for filters which have very narrow passbands, 0.01 nm or less. While Lyot-Öhman birefringent filters have been used particularly for investigations at the Halpha line, the limited availability of the raw materials, especially calcite, have usually restricted these filters to passbands of 0.025 nm or more. A possible alternative type of filter consists of a number of Fabry-Perot interferometers mounted one behind the other.

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Physics
arXiv e-prints