Project status of the Robert Stobie spectrograph near infrared instrument (RSS-NIR) for SALT

被引：11

作者：

Wolf, Marsha J. ^{[1
]}

Mulligan, Mark P. ^{[2
]}

Smith, Michael P. ^{[1
]}

Adler, Douglas P. ^{[2
]}

Bartosz, Curtis M. ^{[1
]}

Bershady, Matthew A. ^{[1
]}

Buckley, David A. H. ^{[3
]}

Burse, Mahesh P. ^{[4
]}

Chordia, Pravin A. ^{[4
]}

Clemens, J. Christopher ^{[5
]}

Epps, Harland W. ^{[6
]}

Garot, Kristine ^{[7
]}

Indahl, Briana L. ^{[1
]}

Jaehnig, Kurt P. ^{[1
]}

Koch, Ron J. ^{[8
]}

Mason, William P. ^{[2
]}

Mosby, Gregory, Jr. ^{[1
]}

Nordsieck, Kenneth H. ^{[1
]}

Percival, Jeffrey W. ^{[1
]}

Punnadi, Sujit ^{[4
]}

Ramaprakash, Anamparambu N. ^{[4
]}

Schier, J. Alan ^{[9
]}

Sheinis, Andrew I. ^{[10
]}

Smee, Stephen A. ^{[11
]}

Thielman, Donald J. ^{[2
]}

Werner, Mark W. ^{[2
]}

Williams, Theodore B. ^{[3
]}

Wong, Jeffrey P. ^{[12
]}

机构：

[1] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[2] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA

[3] S African Astron Observ, ZA-7935 Cape Town, South Africa

[4] Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India

[5] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[6] Univ Calif Santa Cruz, UCO Lick Observ, Santa Cruz, CA 95064 USA

[7] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA

[8] Diron Technologies Inc, Waunakee, WI 53597 USA

[9] Pilot Grp, Monrovia, CA 91016 USA

[10] Australian Astron Observ, Epping, NSW 1710, Australia

[11] Johns Hopkins Univ, Dept Phys & Astron, Instrumentat Design Grp, Baltimore, MD 21218 USA

[12] Paradigm Design Inc, Middleton, WI 53562 USA

来源：

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V | 2014年 / 9147卷

关键词：

SALT; RSS-NIR; near infrared spectroscopy; volume phase holographic grating; HAWAII-2RG; long wavelength blocking filter; Fabry-Perot; spectropolarimetry; AFRICAN LARGE TELESCOPE; FOCUS IMAGING SPECTROGRAPH; OPTICAL DESIGN;

D O I：

10.1117/12.2056736

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Robert Stobie Spectrograph Near Infrared Instrument (RSS-NIR), a prime focus facility instrument for the 11-meter Southern African Large Telescope (SALT), is well into its laboratory integration and testing phase. RSS-NIR will initially provide imaging and single or multi-object medium resolution spectroscopy in an 8 arcmin field of view at wavelengths of 0.9 - 1.7 mu m. Future modes, including tunable Fabry-Perot spectral imaging and polarimetry, have been designed in and can be easily added later. RSS-NIR will mate to the existing visible wavelength RSS-VIS via a dichroic beamsplitter, allowing simultaneous operation of the two instruments in all modes. Multi-object spectroscopy covering a wavelength range of 0.32 - 1.7 mu m on 10-meter class telescopes is a rare capability and once all the existing VIS modes are incorporated into the NIR, the combined RSS will provide observational modes that are completely unique. The VIS and NIR instruments share a common telescope focal plane, and slit mask for spectroscopic modes, and collimator optics that operate at ambient observatory temperature. Beyond the dichroic beamsplitter, RSS-NIR is enclosed in a pre-dewar box operating at -40 degrees C, and within that is a cryogenic dewar operating at 120 K housing the detector and final camera optics and filters. This semi-warm configuration with compartments at multiple operating temperatures poses a number of design and implementation challenges. In this paper we present overviews of the RSS-NIR instrument design and solutions to design challenges, measured performance of optical components, detector system optimization results, and an update on the overall project status.

引用

页数：15

共 38 条

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