Design and fabrication of multilayer reflective filters for a Ritchey‐Chretien Lyman‐α telescope

The performance of the Ritchey-Chretien telescope reflectance filters for the Multi-spectra Solar Telescope Array rocket observatory is demonstrated. The Ritchey-Chretien telescope for the Lyman-alpha line was designed and fabricated using the pi-multilayer concept. A net throughput of 27 percent wi...

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Bibliographic Details
Published in:Optical engineering 1996-05, Vol.35 (5), p.1479-1482
Main Author: Park, Jung Ho
Format: Article
Language:English
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Summary:The performance of the Ritchey-Chretien telescope reflectance filters for the Multi-spectra Solar Telescope Array rocket observatory is demonstrated. The Ritchey-Chretien telescope for the Lyman-alpha line was designed and fabricated using the pi-multilayer concept. A net throughput of 27 percent with a bandwidth of 6 nm at an angle of incidence of 10 deg was achieved. The calculated reflectance as a function of angle exhibited low angular sensitivity from 0 to 15 deg. The measured values are in agreement with the calculated vlaues, and the throughput improvement achieved is almost an order of magnitude over the traditional instrument designed with an Al-MgF2-coated mirror and transmission filter. (AIAA)
ISSN:0091-3286
DOI:10.1117/1.600684