A4 Vertaisarvioitu artikkeli konferenssijulkaisussa

DIPOL-2: a double image high precision polarimeter




TekijätV. Piirola, A. Berdyugin, Svetlana Berdyugina

ToimittajaRamsay S. K., McLean I. S., Takami H.

Konferenssin vakiintunut nimiSPIE. Astronomical Telescopes and Instrumentation

Julkaisuvuosi2014

JournalProceedings of SPIE : the International Society for Optical Engineering

Kokoomateoksen nimiGround-based and Airborn Instrumentation for Astronomy V

Vuosikerta9147

Sivujen määrä9

ISSN0277-786X

DOIhttps://doi.org/10.1117/12.2055923


Tiivistelmä

We have built a new broad-band polarimeter (DIPOL-2), capable of measuring polarization with the precision at the 10-5 level. Two dichroic beam-splitters are used to split light into three passbands (BVR), simultaneously recorded with three CCDs. A rotatable superachromatic lambda/2 (or lambda/4) plate is used as the polarization modulator and a plane parallel calcite plate as the polarization analyzer. Simple yet effective design with small number of optical elements and moving mechanical parts makes DIPOL-2 a highly versatile and reliable instrument with negligible instrumental polarization, very well suitable for observations with remotely controlled telescopes. Current and planned observing programs are briefly described.




Last updated on 2024-26-11 at 20:20