RINGO2: an EMCCD-based polarimeter for GRB followup

I. A. Steele; S. D. Bates; C. Guidorzi; C. J. Mottram; C. G. Mundell; R. J. Smith

doi:10.1117/12.856842

20 July 2010 RINGO2: an EMCCD-based polarimeter for GRB followup

I. A. Steele, S. D. Bates, C. Guidorzi, C. J. Mottram, C. G. Mundell, R. J. Smith

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 773549 (2010) https://doi.org/10.1117/12.856842
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We describe the design and construction of a new novel optical polarimeter (RINGO2) for the Liverpool Telescope. The instrument is designed for rapid (< 3 minute) followup observations of Gamma Ray Bursts in order to measure the early time polarization and time evolution on timescales of ~ 1 - 10000 seconds. By using a fast rotating Polaroid whose rotation is synchronized to control the readout of an electron multiplying CCD eight times per revolution, we can rebin our data in the time domain after acquisition with little noise penalty, thereby allowing us to explore the polarization evolution of these rapidly variable objects for the first time.

Citation Download Citation

I. A. Steele, S. D. Bates, C. Guidorzi, C. J. Mottram, C. G. Mundell, and R. J. Smith "RINGO2: an EMCCD-based polarimeter for GRB followup", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773549 (20 July 2010); https://doi.org/10.1117/12.856842

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