Calibrating the SNfactory Integral Field Spectrograph (SNIFS) with SCALA

被引：4

作者：

Kuesters, Daniel ^{[1
]}

Lombardo, Simona ^{[1
]}

Kowalski, Marek ^{[1
]}

Aldering, Greg ^{[2
]}

Nordin, Jacob ^{[1
]}

Rigault, Mickael ^{[1
]}

机构：

[1] Humboldt Univ, Inst Phys, Newtonstr 15, Berlin, Germany

[2] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA USA

来源：

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI | 2016年 / 9908卷

关键词：

Cosmology; SNe Ia; Calibration; Spectrophotometry; Integralfield spectroscopy;

D O I：

10.1117/12.2232902

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The SNIFS CALibration Apparatus (SCALA), a device to calibrate the Supernova Integral Field Spectrograph on the University Hawaii 2.2m telescope, was developed and installed in Spring 2014. SCALA produces an artificial planet with a diameter of 1 degrees and a constant surface brightness. The wavelength of the beam can be tuned between 3200 angstrom and 10000 angstrom and has a bandwidth of 35 angstrom. The amount of light injected into the telescope is monitored with NIST calibrated photodiodes. SCALA was upgraded in 2015 with a mask installed at the entrance pupil of the UH88 telescope, ensuring that the illumination of the telescope by stars is similar to that of SCALA. With this setup, a first calibration run was performed in conjunction with the spectrophotometric observations of standard stars. We present first estimates for the expected systematic uncertainties of the in-situ calibration and discuss the results of tests that examine the influence of stray light produced in the optics.

引用

页数：11

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