Table 1
The log of observations.
| Object | Alt. name | RA | Dec | Spec. type | V | T exp | Slit | Seeing | Date | P cont | θ cont |
| (J2000) | (J2000) | (mags) | (mins) | (″) | (″) | (%) | (°) | ||||
|
|
|||||||||||
| XY Per | HD 275877 | 03 49 36.3 | +38 58 55.5 | A2IIv | 9.4 | 120.0 | 1.2 | 0.7 | 10-11-2008 | 1.4 | 128 |
| MWC 758 | HD 36112 | 05 30 27.5 | +25 19 57.1 | A5IVe | 8.3 | 60.0 | 1.5 | 1.0 | 08-11-2008 | 0.5 | 47 |
| HK Ori | MWC 497 | 05 31 28.1 | +12 09 10.2 | A4pev | 11.7 | 133.3 | 1.5 | 1.5 | 08-11-2008 | 1.4 | 113 |
| V586 Ori | HD 37258 | 05 36 59.2 | −06 09 16.4 | A2V | 9.8 | 146.7 | 1.5 | 0.9 | 09-11-2008 | 0.9 | 84 |
| BF Ori | HBC 169 | 05 37 13.3 | −06 35 0.6 | A5II-IIIev | 10.3 | 133.3 | 1.5 | 0.8 | 09-11-2008 | 0.6 | 58 |
| V350 Ori | HBC 493 | 05 40 11.8 | −09 42 11.1 | A1 | 11.5 | 120.0 | 1.5 | 0.6 | 10-11-2008 | 1.1 | 65 |
| MWC 147 | HD 259431 | 06 33 5.2 | +10 19 20.0 | B6pe | 8.8 | 53.4 | 1.5 | 0.9 | 09-11-2008 | 1.0 | 100 |
| GU CMa | HD 52721 | 07 01 49.5 | −11 18 3.3 | B2Vne | 6.6 | 15.3 | 1.5 | 1.3 | 08-11-2008 | 0.8 | 24 |
| HD 179218 | MWC 614 | 19 11 11.3 | +15 47 15.6 | A0IVe | 7.2 | 60.0 | 1.5 | 1.2 | 08-11-2008 | 0.5 | 111 |
| HBC 310 | AS 477 | 21 52 34.1 | +47 13 43.6 | B9.5Ve | 10.2 | 110.0 | 1.5 | 1.0 | 09-11-2008 | 1.0 | 50 |
| Il Cep | HD 216629 | 22 53 15.6 | +62 08 45.0 | B2IV-Vne | 9.3 | 86.7 | 1.5 | 1.3 | 08-11-2008 | 4.3 | 100 |
| MWC 1080 | V628 Cas | 23 17 25.6 | +60 50 43.6 | B0eq | 11.6 | 96.7 | 1.5 | 1.0 | 09-11-2008 | 1.7 | 78 |
Notes. The continuum polarisation was measured in the wavelength region 6520–6600 Å, excluding changes over the Hα line. The uncertainty in the continuum polarisation is typically 0.1 per cent and the uncertainty in the continuum polarisation angle is of the order of 1°. The polarisation angles are in the equatorial frame.
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