High-precision polarimetry of nearby stars (d < 50 pc) - Mapping the interstellar dust and magnetic field inside the Local Bubble

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Table 4

Instrumental polarization of the T60 telescope in the B, V, and R passbands, in units of 10⁻⁶ (ppm), for the observing runs in 2014–2018.

JD interval	q_{t B}	u_{t B}	q_{t V}	u_tV	q_tR	u_tR
2456994–6999	34	11	27	−3	44	−4
2457039–7047	−7	−7	2	−5	10	−6
2457154–7172	3	−14	6	−5	17	−11
2457205–7256	−32	−27	−30	−2	−29	2
2457297–7304	−7	−4	−25	3	−22	18
2457354–7370	1	−15	−25	−1	−39	12
2457490–7503	−2	−22	−24	−13	−31	−2
2457686–7701	−24	−26	−36	3	−47	13
2457774–7786	−11	−23	−30	1	−53	5
2457894–7895	−11	−30	−12	−9	−19	2
2458025–8113	−27	−20	−27	4	−29	9
2458134–8196	−12	−19	−24	5	−30	15
2458316–8352	−20	−26	−34	5	−50	−11
2458406–8452	−24	−13	−40	9	−49	28
2458455–8508	−16	−26	−35	−6	−47	1

Notes. The standard errors are in the range 2–3 ppm for each run.

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