NICSPol: a near-infrared polarimeter for the 1.2-m telescope at Mount Abu infrared observatory

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dc.contributor.author Aarthy, Esakkiappan
dc.contributor.author Rai, Archita
dc.contributor.author Ganesh, Shashikiran
dc.contributor.author Vadawale, Santosh V.
dc.date.accessioned 2019-11-01T12:49:17Z
dc.date.available 2019-11-01T12:49:17Z
dc.date.issued 2019-08
dc.identifier.citation Aarthy, Esakkiappan; Rai, Archita; Ganesh, Shashikiran and Vadawale, Santosh V., "NICSPol: a near-infrared polarimeter for the 1.2-m telescope at Mount Abu infrared observatory", Journal of Astronomical Telescopes, Instruments, and Systems, DOI: 10.1117/1.JATIS.5.3.035006, vol. 5, no. 3, Aug. 2019. en_US
dc.identifier.issn 2329-4124
dc.identifier.issn 2329-4221
dc.identifier.uri https://doi.org/10.1117/1.JATIS.5.3.035006
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4897
dc.description.abstract Near infrared camera spectrograph and polarimeter (NICSPol) is a near-infrared (NIR) imaging polarimeter developed for the Near-Infrared Camera and Spectrograph (NICS), one of the backend instruments of the 1.2-m Cassegrain telescope at the Mount Abu Infrared Observatory, India. The polarimeter consists of a rotating wire grid polarizer, which is mounted between the telescope optics and the NICS. The polarimetric observations are carried out by rotating the polarizer using a motorized mechanism to determine the Stokes parameters, which are then converted into the polarization fraction and polarization angle. We report the details of the instrument and the results of observations of infrared polarimetric standards. A set of polarized and unpolarized standards were observed using NICSPol over J, H, and Ks bands covering 0.8 to 2.5???m. The observations of polarized standards using NICSPol show that NICSPol can constrain polarization within ?1??%?? for sources brighter than ?16 magnitude in J, H, and Ks bands. NICSPol is a general purpose instrument that could be used to study variety of astrophysical sources such as AGNs, pulsars, XRBs, supernovae, and star-forming regions. With few NIR polarimeters available worldwide so far, NICSPol would be the first imaging NIR polarimeter in India.
dc.description.statementofresponsibility by Esakkiappan Aarthy, Archita Rai, Shashikiran Ganesh and Santosh V. Vadawale
dc.format.extent vol. 5, no. 3
dc.language.iso en_US en_US
dc.publisher Society of Photo-optical Instrumentation Engineers en_US
dc.title NICSPol: a near-infrared polarimeter for the 1.2-m telescope at Mount Abu infrared observatory en_US
dc.type Article en_US
dc.relation.journal Journal of Astronomical Telescopes, Instruments, and Systems


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