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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 308671.0, MPI für Astronomie / Publikationen_mpia
Concept study and validation of Antarctic telescope tower
Authors:Lanford, E.; Swain, M.; Meyers, C.; Muramatsu, T.; Nielson, G.; Olson, V.; Ronsse, S.; Vinding Nyden, E.; Hammerschlag, R.; Little, P.
Date of Publication (YYYY-MM-DD):2006
Title of Proceedings:Advances in Stellar Interferometry
Start Page:626814-1
End Page:12
Volume (in Series):6268
Name of Conference/Meeting:Advances in Stellar Interferometry
Audience:Not Specified
Abstract / Description:Studies by Mark Swain and a colleague at the Max Planck Institut fur Astronomie, coupled with results from past and ongoing projects at Harvey Mudd College, strongly suggest that it may be possible to achieve imaging performance comparable to the Hubble Space Telescope at relatively low cost using available, commercial products. This is achievable by placing a 2.4 m telescope, with readily available adaptive optics, on a 30 m tower located at a high-elevation geological "dome" in Antarctica. An initial project surveyed relevant tower design approaches, then generated and evaluated six concept designs for telescope towers. Using data for typical and extreme wind at Dome C to generate wind loads, finite element analysis yielded lateral deflections at the top of 0.3 mm for typical winds and 12.1 mm for extreme gusts, with the lowest resonant frequency at 0.7 Hz; some tower concepts are innovative and allow for easy shipment, setup, and relocation. A subsequent project analyzed a tower designed by Hammerschlag and found fundamental resonance frequencies at 4.3 Hz for bending and 5.9 Hz for torsion; this project also designed and simulated an active telescope control system that maintained 17 milliarcsecond pointing error for the telescope atop the tower during typical wind conditions.
Comment of the Author/Creator:Date: 2006, July 1, 2006
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
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