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Polarimetric Standard Stars

Unpolarized Standard Star
HD212311 (Cep)
A0,  V = 8.12

RA(2000.0) = 22:21:58.585
DEC(2000.0) = +56:31:52.75

DSS Quick-V image


RRRT Polarimetry

Cropped Stokes Q image, double image separation s = 45 pix at θ = 45°.
Photometry aperture radius r = 10 pix, background sky annulus r = 15–20 pix.

Cropped Stokes U image, double image separation s = 45 pix at θ = 90°.
Photometry aperture radius r = 10 pix, background sky annulus r = 15–20 pix.


System Filter N q(%) σq(%) u(%) σu(%) p(%) σp(%) θ(°) σθ(°)
HST Standard Values V ? -0.01 0.02 0.03 0.02 0.03 0.02 51.0 17.7
RRRT Observations V 1 0.14 0.30 -0.11 0.22 0.18 0.26 160.4 41.5



Last modified: Sep 18, 2012
David McDavid

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