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Re-aluminization of the 6.5m primary mirror at the MMT Observatory
Ground-based and Airborne Telescopes VII
The MMT Observatory (MMTO) initiated a series of coating process improvement projects after an issue with the coating system in 2010 resulted in blemishes on the 6.5m primary mirror coating. Formally started in 2013, these projects focused on four major tasks: 1) development of a software-based system to control the tungsten filament power sources, 2) characterization of an integrally wound tungsten and aluminum filament, 3) prevent stray molten aluminum droplets from contacting the isolationdoi:10.1117/12.2314386 fatcat:pahuyface5hz7nbyxdo4sdp53i