Results of the verification of the NIR MOS EMIR



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Garzón, F. and Castro Rodríguez, N. and Insausti, M. and López Martín, L. and Hammersley, Peter and Barreto, M. and Fernández Sánchez, Paloma and Joven, E. and López, P. and Mato, A. and Moreno, H. and Nuñez, M. and Patrón, J. and Rasilla, J. L. and Redondo, P. and Rosich, J. and Pascual Ramírez, Sergio and Grange, R. (2014) Results of the verification of the NIR MOS EMIR. Proceedings of SPIE, 9147 . ISSN 0277-786X

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EMIR is one of the first common user instruments for the GTC, the 10 meter telescope operating at the Roque de los Muchachos Observatory (La Palma, Canary Islands, Spain). EMIR is being built by a Consortium of Spanish and French institutes led by the Instituto de Astrofisica de Canarias (IAC). EMIR is primarily designed to be operated as a MOS in the K band, but offers a wide range of observing modes, including imaging and spectroscopy, both long slit and multiobject, in the wavelength range 0.9 to 2.5 μm. This contribution reports on the results achieved so far during the verification phase at the IAC prior to its shipment to the GTC for being commissioned, which is due by mid 2015. After a long period of design and fabrication, EMIR finally entered into its integration phase by mid 2013. Soon after this, the verification phase at the IAC was initiated aimed at configuring and tuning the EMIR functions, mostly the instrument control system, which includes a sophisticated on line data reduction pipeline, and demonstrating the fulfillment of the top level requirements. We have designed an ambitious verification plan structured along the three kind of detectors at hand: the MUX and the engineering and scientific grade arrays. The EMIR subsystems are being integrated as they are needed for the purposes of the verification plan. In the first stage, using the MUX, the full optical system, but with a single dispersive element out of the three which form the EMIR suite, the two large wheels mounting the filters and the pseudo-grisms, plus the detector translation unit holding the MUX, were mounted. This stage was mainly devoted to learn about the capabilities of the instrument, define different settings for its basic operation modes and test the accuracy, repeatability and reliability of the mechanisms. In the second stage, using the engineering Hawaii2 FPA, the full set of pseudo-grisms and band filters are mounted, which means that the instrument is fully assembled except for the cold slit unit, a robotic reconfigurable multislit mask system capable of forming multislit pattern of 55 different slitlets in the EMIR focal plane. This paper will briefly describe the principal units and features of the EMIR instrument as the main results of the verification performed so far are discussed. The development and fabrication of EMIR is funded by GRANTECAN and the Plan Nacional de Astronomia y Astrofisica (National Plan for Astronomy and Astrophysics, Spain).

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© 2014 SPIE.
Conference on Ground-Based and Airborne Instrumentation for Astronomy (5th. 2014. Montreal, Canada).
This work was performed at the Instituto de Astrofísica de Canarias as part of the development of the EMIR instrument to be installed at the GTC telescope. EMIR is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under the grant (project reference AYA2012-33211), GRANTECAN, S.A., via a dedicated contract, and the EMIR partners institutions, in alphabetical order, IAC, LAM, LATT and UCM.

Uncontrolled Keywords:Multiobject imager-spectrograph; Data reduction pipeline; Optical-system; GTC
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:32564
Deposited On:04 Aug 2015 09:04
Last Modified:10 Dec 2018 15:05

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