Thermal characterization of the support plate for the 6.5 m MMT thin-shell, adaptive-secondary mirror

Troy A. Rhoadarmer, Michael Lloyd-Hart, Bruce C. Fitzpatrick, Matthew J. Rademacher, Donald G. Bruns, J. C. Shelton

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


The Multiple Mirror Telescope on Mt. Hopkins will soon be upgraded to a single 6.5 m primary mirror.An adaptive- optical system, featuring a thin-shell, adaptive-secondary mirror with 330 voice-coil actuators is being developed for this new telescope. The thin-shell mirror is supported by a thick, concave aluminum substrate which also holds the actuator control and monitoring electronics and serves as the reference surface. With the actuator electronics dissipating heat into the substrate, the thermal behavior of the aluminum reference plate becomes as important issue. This paper presents results form tow experiments designed to determine the thermal behavior of the reference plate.

Original languageEnglish (US)
Pages (from-to)826-838
Number of pages13
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventAdaptive Optical System Technologies - Kona, HI, United States
Duration: Mar 23 1998Mar 23 1998


  • Adaptive optics
  • Astronomical telescopes
  • Deformable mirrors
  • Secondary mirrors
  • Thermal properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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