Double-wedged Wollaston-type polarimeter design and integration to RTT150-TFOSC


HELHEL S., KIRBIYIK H., BAYAR C., Khamitov İ., Kahya G., Okuyan O.

41st COSPAR Scientific Assembly, İstanbul, Turkey, 30 July - 07 August 2016, vol.41, no.41, pp.1, (Summary Text)

  • Publication Type: Conference Paper / Summary Text
  • Volume: 41
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1
  • Akdeniz University Affiliated: Yes

Abstract

Photometric and spectroscopic observation capabilities of 1.5-m Russian- Turkish Telescope RTT150 has been broadened with the integration of presented polarimeter. The well-known double-wedged Wollaston-type dual-beam technique was preferred and applied to design and produce it. The designed polarimeter was integrated into the telescope detector TFOSC, and called TFOSC-WP. Its capabil- ities and limitations were attempted to be determined by a number of observation sets. Non-polarized and strongly polarized stars were observed to determine its limi- tations as well as its linearity. An instrumental intrinsic polarization was determined for the 1×5 arcmin field of view in equatorial coordinate system, the systematic error of polarization degree as 0.2% %, and position angle as 1.9°. These limitations and capabilities are denoted as good enough to satisfy telescopes' present and future astrophysical space missions related to GAIA and SRG projects.