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Plans for a 10-m submillimeter-wave telescope at the South Pole

Stark, Antony A. and Carlstrom, John E. and Israel, Frank P. and Menten, Karl M. and Peterson, Jeffrey B. and Phillips, T. G. and Sironi, Giorgio and Walker, Christopher K. (1998) Plans for a 10-m submillimeter-wave telescope at the South Pole. In: Advanced Technology MMW, Radio, and Terahertz Telescopes. Proceedings of SPIE. No.3357. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 495-506. ISBN 9780819428042. http://resolver.caltech.edu/CaltechAUTHORS:20180809-161901893

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Abstract

A 10 meter diameter submillimeter-wave telescope has been proposed for installation and scientific use at the NSF Amundsen-Scott South Pole Station. Current evidence indicates that the South Pole is the best submillimeter-wave telescope site among all existing or proposed ground-based observatories. Proposed scientific programs place stringent requirements on the optical quality of the telescope design. In particular, reduction of the thermal background and offsets requires an off-axis, unblocked aperture, and the large field of view needed for survey observations requires shaped optics. This mix of design elements is well-suited for large-scale (square degree) mapping of line and continuum radiation from submillimeter-wave sources at moderate spatial resolutions (4 to 60 arcsecond beam size) and high sensitivity (milliJansky flux density levels). The telescope will make arcminute angular scale, high frequency Cosmic Microwave Background measurements from the best possible ground-based site, using an aperture which is larger than is currently possible on orbital or airborne platforms. The telescope design is homologous. Gravitational changes in pointing and focal length will be accommodated by active repositioning of the secondary mirror. The secondary support, consisting of a large, enclosed beam, permits mounting of either a standard set of Gregorian optics, or prime focus instrumentation packages for CMBR studies. A tertiary chopper is located at the exit pupil of the instrument. An optical design with a hyperboloidal primary mirror and a concave secondary mirror provides a flat focal surface. The relatively large classical aberrations present in such an optical arrangement can be small compared to diffraction at submillimeter wavelengths. Effective use of this telescope will require development of large (1000 element) arrays of submillimeter detectors which are background-limited when illuminated by antenna temperatures near 50 K.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.317383DOIArticle
ORCID:
AuthorORCID
Menten, Karl M.0000-0001-6459-0669
Additional Information:© 1998 Society of Photo-Optical Instrumentation Engineers (SPIE). We thank P. Cheimets, D. Caidwell, W. Davis, and W. Bruckman for their work on the telescope design. We thank R. W. Wilson and A. P. Lane for their contributions to the 10 meter proposal. We are grateful to B. Elmegreen, D. Fischer, P. Goldsmith, A. Lane, and G. Knapp for their contributions to the science goals for the SP 10m. This work was supported in part by the Smithsonian Institution and in part by the National Science Foundation under a cooperative agreement with the Center for Astrophysical Research in Antarctica (CARA), grant number NSF DPP 89-20223. CARA is a National Science Foundation Science and Technology Center.
Funders:
Funding AgencyGrant Number
NSFDPP 89-20223
Subject Keywords:Antarctic, South Pole, submillimeter, astronomy, telescopes
Record Number:CaltechAUTHORS:20180809-161901893
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180809-161901893
Official Citation:Antony A. Stark, John E. Carlstrom, Frank P. Israel, Karl M. Menten, Jeffrey B. Peterson, Thomas G. Phillips, Giorgio Sironi, Christopher K. Walker, "Plans for a 10-m submillimeter-wave telescope at the South Pole", Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); doi: 10.1117/12.317383; https://doi.org/10.1117/12.317383
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88731
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Aug 2018 14:36
Last Modified:10 Aug 2018 14:36

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