The GREGOR polarimetric calibration unit

被引：36

作者：

Hofmann, A. ^{[1
]}

Arlt, K. ^{[1
]}

Balthasar, H. ^{[1
]}

Bauer, S. M. ^{[1
]}

Bittner, W. ^{[1
]}

Paschke, J. ^{[1
]}

Popow, E. ^{[1
]}

Rendtel, J. ^{[1
]}

Soltau, D. ^{[2
]}

Waldmann, T. ^{[2
]}

机构：

[1] Leibniz Inst Astrophys Potsdam, D-14482 Potsdam, Germany

[2] Kiepenheuer Inst Sonnenphys, D-79104 Freiburg, Germany

来源：

ASTRONOMISCHE NACHRICHTEN | 2012年 / 333卷 / 09期

关键词：

instrumentation: polarimeters; Sun: magnetic fields; techniques: polarimetric; POLARIZATION PROPERTIES; TELESCOPE; TOWER;

D O I：

10.1002/asna.201211733

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The new Solar telescope GREGOR is designed to observe small-scale dynamic magnetic structures below a size of 70 km on the Sun with high spectral resolution and polarimetric accuracy. For this purpose, the polarimetric concept of GREGOR is based on a combination of post-focus polarimeters with pre-focus equipment for high precision calibration. The Leibniz-Institute for Astrophysics Potsdam developed the GREGOR calibration unit which is an integral part of the telescope. We give an overview of the function and design of the calibration unit and present the results of extensive testing series done in the Solar Observatory "Einsteinturm" and at GREGOR. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：854 / 862

页数：9

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