Calibration of the Liverpool Telescope RINGO3 polarimeter
Abstract
We present an analysis of polarimetric observations of standard stars performed over the period of more than 3 yr with the RINGO3 polarimeter mounted on the Liverpool Telescope. The main objective was to determine the instrumental polarization of the RINGO3 polarimeter in three spectral energy ranges: blue (350-640 nm), green (650-760 nm) and red (770-1000 nm). The observations were conducted between 2012 and 2016. The total time span of 1126 d was split into five epochs due to the hardware changes to the observing system. Our results should be applied to calibrate all polarimetric observations performed with the RINGO3 polarimeter.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- May 2016
- DOI:
- 10.1093/mnras/stw309
- arXiv:
- arXiv:1602.02105
- Bibcode:
- 2016MNRAS.458..759S
- Keywords:
-
- standards;
- polarization;
- instrumentation: polarimeters;
- techniques: polarimetric;
- Astrophysics - Instrumentation and Methods for Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Accepted for publication in MNRAS, 14 pages, 20 figures, 10 tables