Phase III of the USO Solar Vector Magnetograph
Abstract
The solar vector magnetograph (SVM) is a modern imaging spectropolarimeter installed at Udaipur Solar Observatory (USO). Earlier phases saw the development of the instrument using off-the-shelf components with in-house software development. Subsequently, improvements were done in the opto-mechanical design of the sub-systems and the telescope tracking system. The third phase of the instrument development saw three major improvements: (1) installation of a web-camera-based telescope guiding system, developed in-house, (2) high-cadence spectropolarimetry using liquid-crystal variable retarders and a fast CCD camera, and (3) inclusion of the Na I D1 line for chromospheric observations, in addition to the regularly used photospheric Fe I 6302 Å line.
- Publication:
-
Magnetic Coupling between the Interior and Atmosphere of the Sun
- Pub Date:
- 2010
- DOI:
- 10.1007/978-3-642-02859-5_38
- arXiv:
- arXiv:0907.5267
- Bibcode:
- 2010ASSP...19..395G
- Keywords:
-
- Physics;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 3 pages, 1 table