RoboPol: a four-channel optical imaging polarimeter-Reference-Cited by-同舟云学术

RoboPol: a four-channel optical imaging polarimeter

Published:2019-02-26 Issue:2 Volume:485 Page:2355-2366
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Ramaprakash A N¹,Rajarshi C V¹,Das H K¹,Khodade P¹,Modi D¹,Panopoulou G²^ORCID,Maharana S¹,Blinov D³⁴⁵,Angelakis E⁶,Casadio C⁶,Fuhrmann L⁶,Hovatta T⁷⁸,Kiehlmann S²^ORCID,King O G²,Kylafis N³⁴,Kougentakis A³,Kus A⁹,Mahabal A²,Marecki A⁹,Myserlis I⁶,Paterakis G³,Paleologou E³,Liodakis I¹⁰^ORCID,Papadakis I³⁴,Papamastorakis I³⁴,Pavlidou V³⁴^ORCID,Pazderski E⁹,Pearson T J²^ORCID,Readhead A C S²,Reig P³⁴^ORCID,Słowikowska A⁹^ORCID,Tassis K³⁴,Zensus J A⁶

Affiliation:

1. Inter-University Centre for Astronomy & Astrophysics, Post bag 4, Ganeshkhind, Pune 411007, India

2. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, 1200 E California Blvd, MC 249-17, Pasadena, CA 91125, USA

3. Foundation for Research and Technology – Hellas, IA & IESL, Voutes, 71110 Heraklion, Greece

4. Department of Physics and Institute of Theoretical & Computational Physics, University of Crete, PO Box 2208, GR-710 03, Heraklion, Crete, Greece

5. Astronomical Institute, St. Petersburg State University, Universitetsky pr. 28, Petrodvoretz, 198504 St. Petersburg, Russia

6. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany

7. Finnish Centre for Astronomy with ESO (FINCA), University of Turku, FI-20014, Turku, Finland

8. Aalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kylmälä, Finland

9. Toruń Centre for Astronomy, Nicolaus Copernicus University, Faculty of Physics, Astronomy and Informatics, Grudziadzka 5, 87-100 Toruń, Poland

10. KIPAC, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA

Abstract

ABSTRACT We present the design and performance of RoboPol, a four-channel optical polarimeter operating at the Skinakas Observatory in Crete, Greece. RoboPol is capable of measuring both relative linear Stokes parameters q and u (and the total intensity I) in one sky exposure. Though primarily used to measure the polarization of point sources in the R band, the instrument features additional filters (B, V, and I), enabling multiwavelength imaging polarimetry over a large field of view (13.6′ × 13.6′). We demonstrate the accuracy and stability of the instrument throughout its 5 yr of operation. Best performance is achieved within the central region of the field of view and in the R band. For such measurements the systematic uncertainty is below 0.1 per cent in fractional linear polarization, p (0.05 per cent maximum likelihood). Throughout all observing seasons the instrumental polarization varies within 0.1 per cent in p and within ∼1° in polarization angle.

Funder

University of Crete

European Social Fund

Seventh Framework Programme

National Aeronautics and Space Administration

National Science Foundation

National Science Centre

European Research Counsil

Horizon 2020

Publisher

Oxford University Press (OUP)

Subject