VizieR Online Data Catalog: gamma-ray bright blazars optical polarization (Itoh+, 2016)
Abstract
We performed optical and near-infrared imaging polarimetry of 42 AGNs between 2008 August and 2014 December with the 1.5m diameter Kanata telescope. We used two instruments attached to the Kanata telescope: the Triple Range Imager and SPECtrograph (TRISPEC) and the Hiroshima One-shot Wide-field Polarimeter (HOWPol). TRISPEC was attached to the Cassegrain focus of the Kanata telescope from 2006 to 2011, and it has a CCD and two InSb arrays, enabling photopolarimetric observations in one optical and two near-infrared bands simultaneously. HOWPol is installed at the Nasmyth focus of the Kanata telescope and has been in operation since 2009.
We performed V-, J-, and Ks-band photometry and polarimetry observations of each target from 2008 July to 2010 February using TRISPEC and performed the V- and RC-band photometry and polarimetry observations from 2008 July to 2010 February using HOWPol. Each observing sequence consisted of successive exposures at four position angles of a half-wave plate of 0°, 45°, 22.5°, and 67.5°. (9 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- November 2016
- DOI:
- 10.26093/cds/vizier.18330077
- Bibcode:
- 2016yCat..18330077I
- Keywords:
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- Active gal. nuclei;
- BL Lac objects;
- Polarization;
- Photometry