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Double-wedged Wollaston-type polarimeter design and integration to RTT150-TFOSC; initial tests, calibration, and characteristics


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 capabilities and limitations were attempted to be determined by a number of observation sets. Non-polarized and strongly polarized stars were observed to determine its limitations 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.

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  1. 1.

    Scientific and Technological Research Council of Turkey


  1. 1.

    Oliva, E.: Wedged double Wollaston, a device for single-shot polarimetric measurements. Astron. Astrophys. 123, 589–592 (1997)

    ADS  Google Scholar 

  2. 2.

    Pernechele, C., Giro, E., Fantinel, D.: Device for optical linear polarization measurements with a single exposure. Proc. SPIE 4843, 156–163 (2003)

    Article  ADS  Google Scholar 

  3. 3.

    Gorosabel, J., García Muñoz, A., Sánchez-Lavega, A., Hueso, R., Pérez Hoyos, S.: Optical linear polarimetric observations of solar system bodies using a wedged double Wollaston. EPSC Abstracts, Vol. 9, EPSC2014, p. 300 (2014)

  4. 4.

    Afanasiev, V.L., Amirkhanyan, V.R.: Technique of polarimetric observations of faint objects at the 6-m BTA telescope. Astrophys. Bull. 67(4), 438–452 (2012)

    Article  ADS  Google Scholar 

  5. 5.

    Kawabata, K.S., et al.: Properties of FOCAS optical components. Proc. SPIE 4841, 1219 (2003)

    Article  ADS  Google Scholar 

  6. 6.

    Patat, F., Romaniello, M.: Error analysis for dual-beam optical linear polarimetry. Pub. Astron. Soc. Pac. 118, 146–161 (2006)

    Article  ADS  Google Scholar 

  7. 7.

    Shakhovskoy, N.M., Efimov, Yu. S.: Polarization observations of nonstable stars and extragalactic object. I: equipment, method of observation and reduction. Izv. Krymskoi Astrofiz. Obs., Tom. 45, 90–110 (1972)

    ADS  Google Scholar 

  8. 8.

    Helhel, S., Kahya, G., Khamitov, I., Bayar, C. Design of TFOSC Compatible Polarimeter for Polarimetric Observations, Progress in Electromagnetics Research Symposium Proceedings, Guangzhou, China, Aug. 25–28 (2014)

  9. 9.

    Hsu, J.-C., Breger, M.: On standard polarized stars. Astrophys. J. 262, 732–738 (1982)

    Article  ADS  Google Scholar 

  10. 10.

    Schmidt, G.D., Elston, R., Lupie, O.L.: The Hubble Space Telescope northern-hemisphere grid of stellar polarimetric standards. Astron. J. 104, 1563–1567 (1992)

    Article  ADS  Google Scholar 

  11. 11.

    Dolan, J.F., Tapia, S.: Wavelength dependence of position angle in polarization standards. Pub. Astron. Soc. Pac. 98, 792–802 (1986)

    Article  ADS  Google Scholar 

  12. 12.

    Clemens, D.P., Tapia, S.: Toward selection of intermediate-magnitude polarization standards. Pub. Astron. Soc. Pac. 102, 179–182 (1990)

    Article  ADS  Google Scholar 

  13. 13.

    Turnshek, D.A., Bohlin, R.C., Williamson, R.L., II, Lupie, O.L., Koornneef, J., Morgan, D.H.: An atlas of Hubble Space Telescope photometric, spectrophotometric, and polarimetric calibration objects. Astron. J. 99, 1243 (1990)

    Article  ADS  Google Scholar 

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Designing and producing steps of TFOSC-WPol were financially supported and funded by TÜBİTAK (Grand No. 113F263), and integration and test steps were supported by TÜBİTAK TUG (Project No:14BRTT150-665). This work was also supported by the subsidy allocated to Kazan Federal University for the state assignment in the sphere of scientific activities. We also would like to thank to Akdeniz University BAP unit for their financial support.

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Correspondence to G. Kahya.

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Helhel, S., Khamitov, I., Kahya, G. et al. Double-wedged Wollaston-type polarimeter design and integration to RTT150-TFOSC; initial tests, calibration, and characteristics. Exp Astron 39, 595–604 (2015).

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  • WeDoWo
  • Polarimeter
  • RTT150
  • TUG
  • Imaging polarimetry