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Optical Design of the Camera for Transiting Exoplanet Survey Satellite (TESS)The optical design of the wide field of view refractive camera, 34 degrees diagonal field, for the TESS payload is described. This fast f/1.4 cryogenic camera, operating at -75 C, has no vignetting for maximum light gathering within the size and weight constraints. Four of these cameras capture full frames of star images for photometric searches of planet crossings. The optical design evolution, from the initial Petzval design, took advantage of Forbes aspheres to develop a hybrid design form. This maximized the correction from the two aspherics resulting in a reduction of average spot size by sixty percent in the final design. An external long wavelength pass filter was replaced by an internal filter coating on a lens to save weight, and has been fabricated to meet the specifications. The stray light requirements were met by an extended lens hood baffle design, giving the necessary off-axis attenuation.
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Chrisp, Michael
(Massachusetts Inst. of Tech. Lexington, MA, United States)
Clark, Kristin
(Massachusetts Inst. of Tech. Lexington, MA, United States)
Primeau, Brian
(Massachusetts Inst. of Tech. Lexington, MA, United States)
Dalpiaz, Michael
(Massachusetts Inst. of Tech. Lexington, MA, United States)
Lennon, Joseph
(Massachusetts Inst. of Tech. Lexington, MA, United States)
Date Acquired
September 28, 2015
Publication Date
August 9, 2015
Subject Category
Instrumentation And Photography
Report/Patent Number
Meeting Information
Meeting: SPIE
Location: San Diego, CA
Country: United States
Start Date: September 9, 2015
End Date: September 13, 2015
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: FA8721-05-C-0002
Distribution Limits
Public Use Permitted.
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