Translator Disclaimer
1 July 1990 Stratospheric Observatory for Infrared Astronomy: Part II. Advanced technologies
Author Affiliations +
Abstract
In cooperation with NASA, the West German Minister for Research and Technology (BMFT) since 1986 has conducted studies to provide an airborne telescope of 2.5 m aperture for SOFIA, a successor to the extremely successful Gerard Kuiper Airborne Observatory (KAO). In the decades from the mid-nineties onward, SOFIA could make available a continuing and readily deployable observation platform at heights above 12.5 km for sophisticated instrumentation from the submm well into the optical spectral range. While the planned SOFIA facility is described in part I, here an overview will be given of the technical problems involved in developing a large aperture optical telescope for operation in an open cavity environment of an aircraft flying at high altitude. Issues that have been addressed in the project definition phase comprise the figuring and handling of a 2.7 m thin meniscus mirror with very fast f/ratio 1.2, the novel support system, the design of the telescope assembly using light weight composites, the large spherical bearing and the telescope control and drive system. Some of the aforementioned technicalities are being studied on a subscale level, others still have to mature until the beginning of the development phase.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Reinhold Ewald and Alois A. Himmes "Stratospheric Observatory for Infrared Astronomy: Part II. Advanced technologies", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); https://doi.org/10.1117/12.19183
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

SOFIA design history
Proceedings of SPIE (July 26 2016)
Status report on the SOFIA pointing system
Proceedings of SPIE (September 28 2004)
Technology for 8-m primary mirrors
Proceedings of SPIE (June 30 1990)
A Ten-Meter Optical Telescope In Space
Proceedings of SPIE (August 19 1986)
Generation Of Off-Axis Aspherics
Proceedings of SPIE (November 03 1982)

Back to Top