18 December 2002 Design and fabrication of a lightweight 2-m telescope for the balloon-borne large-aperture submillimeter telescope: BLAST
Author Affiliations +
Abstract
Balloon borne instruments offer opportunities for astronomical observation in an environment that is superior to many ground observatories and less expensive than space borne observatories. BLAST is an infrared astronomical telescope that will use a high altitude balloon as an observation platform. The BLAST telescope has a unique set of requirements: lightweight, low cost, zenith to horizon pointing, 10 arc-second pointing accuracy, high Strehl ratio far infrared/sub-milllimeter observation. The design of the BLAST telescope takes advantage of a pre-existing 2-m experimental lightweight carbon fiber mirror. Using this spherical primary, an aspheric secondary was designed to produce a diffraction limited telescope at 250 microns. The telescope metering structure was designed and fabricated using high stiffness, low mass, thermally stable carbon fiber. The secondary mirror was aggressively lightweighted and fabricated using state of the art diamond turning technology. Design was verified prior to manufacturing using finite element structural analyses in order to demonstrate compliance with the deflection requirements of the secondary mirror when pointing zenith and near horizon. This paper will review the optical and opto-mechanical design, fabrication, integration and alignment of the BLAST telescope.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brian E. Catanzaro, Brian E. Catanzaro, Toan Pham, Toan Pham, Luca Olmi, Luca Olmi, Karl E. Martinson, Karl E. Martinson, Mark Devlin, Mark Devlin, "Design and fabrication of a lightweight 2-m telescope for the balloon-borne large-aperture submillimeter telescope: BLAST", Proc. SPIE 4818, Infrared Spaceborne Remote Sensing X, (18 December 2002); doi: 10.1117/12.453708; https://doi.org/10.1117/12.453708
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

Tolerance analysis versus image quality a case study for...
Proceedings of SPIE (September 29 1994)
Planning The National New Technology Telescope (NNTT)
Proceedings of SPIE (August 19 1986)
Current Status Of The Multiple Mirror Telescope
Proceedings of SPIE (August 31 1974)
A user’s guide of optical mounts and alignment fixtures ...
Proceedings of SPIE (September 29 2004)
Some Design Aspects Of A Multiple-Mirror Telescope
Proceedings of SPIE (August 31 1972)

Back to Top