ATST Enclosure final design and construction plans

Gaizka Murga; Heather Marshall; Javier Ariño; Tom Lorentz

doi:10.1117/12.925987

17 September 2012 ATST Enclosure final design and construction plans

Gaizka Murga, Heather Marshall, Javier Ariño, Tom Lorentz

Proceedings Volume 8444, Ground-based and Airborne Telescopes IV; 844408 (2012) https://doi.org/10.1117/12.925987
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The Advanced Technology Solar Telescope (ATST) is a 4-m class solar telescope to be built at the Haleakalā High Altitude Observatory Site in Maui, Hawai'i. It will be the largest solar telescope in the world, with unprecedented abilities to view details of the Sun. Using adaptive optics technology, ATST will be able to provide the sharpest views ever taken of the solar surface. It is expected that the 4-meter class telescope will have a significant impact on the study of stellar magnetic fields, plasma physics and astronomy, allowing scientists to learn even more about the Sun and solarterrestrial interactions. The ATST enclosure is unique in its functionality, as not only it provides protection from adverse weather conditions when not in operation, but it also positions the telescope Aperture Stop which must be accurately aligned so that the primary mirror is fully illuminated, while insolation in other telescope equipment is prevented. The proposed design is based on a multi-sector shutter system arrangement with an innovative crawler drive system (patent pending) assembled on two steel fabricated arch girders. These arch girders are stiffened by a secondary structure and supported on a steel fabricated base ring. The base ring rests on an azimuth mechanism composed of several driven/idling bogies. The outer shape of the enclosure is configured by the secondary structure which supports the cladding and has been selected so as to minimize the solar irradiated surface and reduce shell seeing in early morning hours when the seeing is the best. This paper describes the work performed by AEC IDOM and ATST team to define both the final design of the Enclosure and the construction plan to erect it at the Observatory Site.

Citation Download Citation

Gaizka Murga, Heather Marshall, Javier Ariño, and Tom Lorentz "ATST Enclosure final design and construction plans", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 844408 (17 September 2012); https://doi.org/10.1117/12.925987

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