Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Characterization of a dual-beam, dual-camera optical imaging polarimeter

Shrestha, M, Steele, IA, Piascik, AS, Jermak, HE, Smith, RJ and Copperwheat, CM Characterization of a dual-beam, dual-camera optical imaging polarimeter. Monthly Notices of the Royal Astronomical Society. ISSN 0035-8711 (Accepted)

[img]
Preview
Text
2004.07595v1.pdf - Accepted Version

Download (9MB) | Preview

Abstract

Polarization plays an important role in various time-domain astrophysics to understand the magnetic fields, geometry, and environments of spatially unresolved variable sources. In this paper we present the results of laboratory and on-sky testing of a novel dual-beam, dual-camera optical imaging polarimeter (MOPTOP) exploiting high sensitivity, low-noise CMOS technology and designed to monitor variable and transient sources with low systematic errors and high sensitivity. We present a data reduction algorithm that corrects for sensitivity variations between the cameras on a source-by-source basis. Using our data reduction algorithm, we show that our dual-beam, dual-camera technique delivers the benefits of low and stable instrumental polarization ($<0.05$\% for lab data and $<0.25$\% for on sky data) and high throughput while avoiding the additional sky brightness and image overlap problems associated with dual-beam, single-camera polarimeters.

Item Type: Article
Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Manisha Shrestha, Iain A Steele, Andrzej S Piascik, Helen Jermak, Robert J Smith, Chris M Copperwheat, Characterization of a dual-beam, dual-camera optical imaging polarimeter, Monthly Notices of the Royal Astronomical Society, , staa1049, https://doi.org/10.1093/mnras/staa1049 is available online at: https://dx.doi.org/10.1093/mnras/staa1049
Uncontrolled Keywords: astro-ph.IM; astro-ph.IM
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Related URLs:
Date Deposited: 27 Apr 2020 09:52
Last Modified: 27 Apr 2020 10:00
DOI or Identification number: 10.1093/mnras/staa1049
URI: http://researchonline.ljmu.ac.uk/id/eprint/12835

Actions (login required)

View Item View Item