Demonstration of high-performance cryogenic probe arms for deployable IFUs

Stephen S. Eikenberry, Charles H. Murphey, Scott A. Mullin, John G. Bennett, Steven N. Raines, Kendall Ackley, Richard D. Stelter, Alan Garner, Josep Sabater, Sophia A. Eikenberry, Brian Chinn, Hipatia V. Donoso, Claudia S. Vega, José María Gómez, Jordi Torra, Michael D. Herlevich, Richard Frommeyer, Paola Miller

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

4 Citations (Scopus)


We describe the design, development, and laboratory test results of cryogenic probe arms feeding deployable integral field units (IFUs) for the Mid-resolution InfRAreD Astronomical Spectrograph (MIRADAS) - a near-infrared multi-object echelle spectrograph for the 10.4-meter Gran Telescopio Canarias. MIRADAS selects targets using 20 positionable pickoff mirror optics on cryogenic probe arms, each feeding a 3.7×1.2-arcsec field of view to the spectrograph integral field units, while maintaining excellent diffraction-limited image quality. The probe arms are based on a concept developed for the ACES instrument for Gemini and IRMOS for TMT. We report on the detailed design and opto-mechanical testing of MIRADAS prototype probe arms, including positioning accuracy, repeatability, and reliability under fully cryogenic operation, and their performance for MIRADAS. We also discuss potential applications of this technology to future instruments.

Original languageEnglish
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy V
EditorsSuzanne K Ramsay, Ian S McLean, Hideki Takami
Place of PublicationBellingham WA USA
Number of pages13
ISBN (Electronic)9780819496157
Publication statusPublished - 1 Jan 2014
Externally publishedYes
EventGround-Based and Airborne Instrumentation for Astronomy 2014 - Montreal, Canada
Duration: 22 Jun 201426 Jun 2014
Conference number: 5th (Proceedings)

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


ConferenceGround-Based and Airborne Instrumentation for Astronomy 2014
OtherSPIE Astronomical Telescopes + instrumentation 2014: Ground-Based and Airborne Instrumentation for Astronomy 2014
(was the title and linked to the ERA event record) Evidence on related outputs indicate that it is actually the Ground-Based and Airborne Instrumentation for Astronomy 2014
Internet address

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