Kaydon Bearings Were Selected For the World's Largest Camera
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Jun 13,2007
Kaydon Bearings Were Selected For the World's Largest Camera
Kaydon bearings were selected for the filter wheel mechanism in the world's largest infra-red camera, part of the Vista telescope
Vista - the world's largest telescope dedicated to ground-based survey work - should be completed by early 2008. Capable of supporting a huge variety of projects from solar system studies to cosmology it is equipped with the world's largest infra-red camera. Design and construction has been managed by the UK Astronomy Technology Centre for a Consortium of 18 UK universities led by Queen Mary, University of London.
Proposed projects for this telescope range from measuring the galaxy's population of brown dwarf stars to constructing a 3D map that covers about 5% of the entire observable universe.
An important part of the telescope's operation is the exchange of different filters in the field of view to alter the waveband to suit the application.
Kaydon bearings were selected for this filter wheel mechanism for the infra-red camera, primarily to save space.An ability to operate in a cryogenic atmosphere of -200C without lubrication was also a prerequisite.The bearings and engineering analysis was supplied to the UK Astronomy Technology Centre by RA Rodriguez - UK factory representatives for the Kaydon corporation.The chosen bearings are of a type that is now considered an industry standard for achieving high performance in a small space.
The bearings' weight-saving potential was beneficial to the filter wheel mechanism design.As the application could not tolerate grease or oil lubrication these stainless steel angular contact bearings were supplied with lead ion dry film lube.Sited at the Cerro Paranal Observatory in the Atacama Desert in Chile and operating at an altitude of 2635m, this 4m telescope will become part of the European Southern Observatory's suite of telescopes.Its discoveries will be crucial in optimising European exploitation of southern hemisphere 8m telescope time.
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