Optimization and performance of the Robert Stobie Spectrograph Near-InfraRed detector system

被引：2

作者：

Mosby, Gregory, Jr. ^{[1
,2
]}

Indahl, Briana ^{[3
]}

Eggen, Nathan ^{[1
]}

Wolf, Marsha ^{[1
]}

Hooper, Eric ^{[1
]}

Jaehnig, Kurt ^{[1
]}

Thielman, Don ^{[4
]}

Burse, Mahesh ^{[5
]}

机构：

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

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[3] Univ Texas Austin, Dept Astron, RLM 15308, Austin, TX 78712 USA

[4] Univ Wisconsin, Ctr Space Sci & Engn, 1225 W Dayton St, Madison, WI 53706 USA

[5] Interuniv Ctr Astron & Astrophys, Pune, Maharashtra, India

来源：

JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS | 2018年 / 4卷 / 01期

关键词：

near-infrared detectors; infrared arrays; persistence; read noise; thermal background; ARRAYS;

D O I：

10.1117/1.JATIS.4.1.014001

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

At the University of Wisconsin-Madison, we are building and testing the near-infrared (NIR) spectrograph for the Southern African Large Telescope-RSS-NIR. RSS-NIR will be an enclosed cooled integral field spectrograph. The RSS-NIR detector system uses a HAWAII-2RG (H2RG) HgCdTe detector from Teledyne controlled by the SIDECAR ASIC and an Inter-University Centre for Astronomy and Astrophysics (IUCCA) ISDEC card. We have successfully characterized and optimized the detector system and report on the optimization steps and performance of the system. We have reduced the CDS read noise to similar to 20 e-for 200 kHz operation by optimizing ASIC settings. We show an additional factor of 3 reduction of read noise using Fowler sampling techniques and a factor of 2 reduction using up-the-ramp group sampling techniques. We also provide calculations to quantify the conditions for sky-limited observations using these sampling techniques. (c) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：15

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