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Mechanical Design of NESSI: New Mexico Tech Extrasolar Spectroscopic Survey InstrumentNESSI: the New Mexico Tech Extrasolar Spectroscopic Survey Instrument is a ground-based multi-object spectrograph that operates in the near-infrared. It will be installed on one of the Nasmyth ports of the Magdalena Ridge Observatory (MRO) 2.4-meter Telescope sited in the Magdalena Mountains, about 48 km west of Socorro-NM. NESSI operates stationary to the telescope fork so as not to produce differential flexure between internal opto-mechanical components during or between observations. An appropriate mechanical design allows the instrument alignment to be highly repeatable and stable for both short and long observation timescales, within a wide-range of temperature variation. NESSI is optically composed of a field lens, a field de-rotator, re-imaging optics, an auto-guider and a Dewar spectrograph that operates at LN2 temperature. In this paper we report on NESSI's detailed mechanical and opto-mechanical design, and the planning for mechanical construction, assembly, integration and verification.
Document ID
20150008800
Document Type
Conference Paper
External Source(s)
Authors
Santoro, Fernando G. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Olivares, Andres M. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Salcido, Christopher D. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Jimenez, Stephen R. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Jurgenson, Colby A. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Hrynevych, Michael A. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Creech-Eakman, Michelle J. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Boston, Penny J. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Schmidt, Luke M. (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Bloemhard, Heather (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Rodeheffer, Dan (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Vaive, Genevieve (New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Vasisht, Gautam (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Swain, Mark R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Deroo, Pieter (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 26, 2015
Publication Date
November 11, 2011
Subject Category
Astronomy
Mechanical Engineering
Instrumentation and Photography
Report/Patent Number
IMECE2011ý63928
Meeting Information
ASME 2011 International Mechanical Engineering Congress(Denver, CO)
Funding Number(s)
CONTRACT_GRANT: NRL-N00173-01-2-C902
CONTRACT_GRANT: NNX09AP69A
Distribution Limits
Public
Copyright
Other
Keywords
exoplanet
spectrograph