8 June 1995 Image improvement of CFHT's primary mirror: primary mirror cooling
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The Canada-France-Hawaii-Telescope is in the process of upgrading the primary mirror cell for cooling of the mirror during non-operating hours. This paper addresses the goals of CFHT in insulating and actively cooling the primary mirror cell environment. The main design criteria is to have a system that would introduce chilled dry air to a sealed and insulated primary mirror cell during daylight hours. This could remove the deleterious effects of having the primary mirror warmer than the ambient air. A system is planned to protect the mirror in case of sudden moisture exposure and also decrease the frequency of recoating due to contamination.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edward G. Stokes, Rohendra Dulip Atapattu, Rod Hendrix, "Image improvement of CFHT's primary mirror: primary mirror cooling", Proc. SPIE 2479, Telescope Control Systems, (8 June 1995); doi: 10.1117/12.211457; https://doi.org/10.1117/12.211457


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