Thermo-Mechanical Design of the BigBOSS Prime Focus Corrector

Details Thermo-Mechanical Design of the BigBOSS Prime Focus Corrector Thermo-Mechanical Design of the BigBOSS Prime Focus Corrector

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933509p&link_type=abstract

American Astronomical Society, AAS Meeting #219, #335.09

Astronomy and Astrophysics

Astronomy

Scientific paper

The proposed BigBOSS instrument includes a new wide field prime focus corrector and fiber-fed spectrograph for the Mayall 4m telescope at Kitt Peak, Arizona. Five thousand robotically positioned fibers in the Ø0.95m focal plate feed spectrographs that will measure the redshift of 20 million galaxies, surveying 10-20 times the volume of existing studies. To achieve the strict light throughput required for this survey the prime focus instrument must maintain tight requirements on alignment and distortion. These requirements are met though stiffness and thermal design balanced against mass and volume constraints on the existing Mayall telescope structure. In our poster we will present the mechanical design of the prime focus corrector, describe its components, and show system deflection and thermal distortion predictions.

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