A low-cost high-frequency DIMM platform for the Hobby-Eberly Telescope

John M. Good; Edwin S. Barker

doi:10.1117/12.552496

28 September 2004 A low-cost high-frequency DIMM platform for the Hobby-Eberly Telescope

John M. Good, Edwin S. Barker

Proceedings Volume 5489, Ground-based Telescopes; (2004) https://doi.org/10.1117/12.552496
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

A tower and access platform were fabricated and erected for the Hobby-Eberly Telescope (HET) Differential Image Motion Monitor (DIMM). The 5 meter high tower exhibits a fundamental frequency of 43 Hz. The cost of the tower system, including access platform and enclosure was $12K US. The enclosure includes a unique application of an off-the-shelf truck accessory that serves as a shutter. The enclosure is ventilated, and incorporates a windshield to reduce vibrations that have proven problematic in the Meade Telescopes used for the DIMM system.

Citation Download Citation

John M. Good and Edwin S. Barker "A low-cost high-frequency DIMM platform for the Hobby-Eberly Telescope", Proc. SPIE 5489, Ground-based Telescopes, (28 September 2004); https://doi.org/10.1117/12.552496

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