Performance and calibration of the NIKA camera at the IRAM 30 m telescope

被引：51

作者：

Catalano, A. ^{[1
]}

Calvo, M. ^{[2
,3
]}

Ponthieu, N. ^{[4
,5
]}

Adam, R. ^{[1
]}

Adane, A. ^{[6
]}

Ade, P. ^{[7
]}

Andre, P. ^{[8
]}

Beelen, A. ^{[9
,10
]}

Belier, B. ^{[11
]}

Benoit, A. ^{[2
,3
]}

Bideaud, A. ^{[7
]}

Billot, N. ^{[12
]}

Boudou, N. ^{[2
,3
]}

Bourrion, O. ^{[1
]}

Coiffard, G. ^{[6
]}

Comis, B. ^{[1
]}

D'Addabbo, A. ^{[2
,3
,14
]}

Desert, F. -X. ^{[4
,5
]}

Doyle, S. ^{[7
]}

Goupy, J. ^{[2
,3
]}

Kramer, C. ^{[12
]}

Leclercq, S. ^{[6
]}

Macias-Perez, J. F. ^{[1
]}

Martino, J. ^{[9
,10
]}

Mauskopf, P. ^{[7
,15
,16
]}

Mayet, F. ^{[1
]}

Monfardini, A. ^{[2
,3
]}

Pajot, F. ^{[9
,10
]}

Pascale, E. ^{[7
]}

Perotto, L. ^{[1
]}

Reveret, V. ^{[8
]}

Rodriguez, L. ^{[8
]}

Savini, G. ^{[13
]}

Schuster, K. ^{[6
]}

Sievers, A. ^{[12
]}

Tucker, C. ^{[7
]}

Zylka, R. ^{[6
]}

机构：

[1] Univ Grenoble Alpes, CNRS IN2P3, Lab Phys Subatom & Cosmol, F-38026 Grenoble, France

[2] CNRS, Inst Neel, F-38042 Grenoble, France

[3] Univ Grenoble, F-38042 Grenoble, France

[4] CNRS, IPAG, F-38041 Grenoble, France

[5] Univ Grenoble, F-38041 Grenoble, France

[6] IRAM, F-38406 Grenoble, France

[7] Cardiff Univ, Astron Instrumentat Grp, Cardiff CF10 3AX, S Glam, Wales

[8] Univ Paris Diderot, CEA Saclay, CNRS INSU, Lab AIM,CEA IRFU, F-91191 Gif Sur Yvette, France

[9] CNRS, IAS, F-91405 Orsay, France

[10] Univ Paris 11, F-91405 Orsay, France

[11] Univ Paris 11, IEF, F-91405 Orsay, France

[12] IRAM, E-18012 Granada, Spain

[13] UCL, Dept Phys & Astron, London WC1E 6BT, England

[14] Univ Roma La Sapienza, I-00185 Rome, Italy

[15] Arizona State Univ, SESE, Tempe, AZ USA

[16] Arizona State Univ, Tempe, AZ USA

来源：

ASTRONOMY & ASTROPHYSICS | 2014年 / 569卷

基金：

欧洲研究理事会;

关键词：

methods: observational; submillimeter: general; submillimeter: galaxies; submillimeter: ISM; DR-21 OUTFLOW SOURCE; SUBMILLIMETER GALAXY; REDSHIFT; EMISSION; FIELD;

D O I：

10.1051/0004-6361/201423557

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The New IRAM KID Array (NIKA) instrument is a dual-band imaging camera operating with kinetic inductance detectors (KID) cooled at 100 mK. NIKA is designed to observe the sky at wavelengths of 1.25 and 2.14 mm from the IRAM 30 m telescope at Pico Veleta with an estimated resolution of 13 arcsec and 18 arcsec, respectively. This work presents the performance of the NIKA camera prior to its opening to the astrophysical community as an IRAM common-user facility in early 2014. NIKA is a test bench for the final NIKA2 instrument to be installed at the end of 2015. The last NIKA observation campaigns on November 2012 and June 2013 have been used to evaluate this performance and to improve the control of systematic effects. We discuss here the dynamical tuning of the readout electronics to optimize the KID working point with respect to background changes and the new technique of atmospheric absorption correction. These modifications significantly improve the overall linearity, sensitivity, and absolute calibration performance of NIKA. This is proved on observations of point-like sources for which we obtain a best sensitivity (averaged over all valid detectors) of 40 and 14 mJy s(1/2) for optimal weather conditions for the 1.25 and 2.14 mm arrays, respectively. NIKA observations of well known extended sources (DR21 complex and the Horsehead nebula) are presented. This performance makes the NIKA camera a competitive astrophysical instrument.

引用

页数：15

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