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Table 1

Observing log.

Dataset Date UT Exp. time (s) Filter or grism α (°) Ang. diam. () NP ang (°) NP dist. ()

SP1 20/12/2014 03:30 3.00 SP 8.64 42.11 +21.16 –19.69

IP1 25/02/2015 21:57 0.05 R 3.94 44.74 +19.23 –20.92
IP1 25/02/2015 22:03 0.05 V 3.94 44.74 +19.23 –20.92
IP1 25/02/2015 22:14 0.40 B 3.94 44.74 +19.23 –20.92

IP2 26/02/2015 00:03 0.05 R 3.96 44.74 +19.23 –20.92
IP2 26/02/2015 00:13 0.05 V 3.96 44.74 +19.23 –20.92

IP3 26/02/2015 21:13 0.05 V 4.13 44.68 +19.19 –20.89
IP3 26/02/2015 21:24 0.05 R 4.13 44.68 +19.19 –20.89
IP3 26/02/2015 21:35 0.20 B 4.13 44.68 +19.19 –20.89

IP4 17/10/2015 04:40 0.05 V 6.73 32.15 +24.87 –15.03

SP2 06/11/2015 03:29 3.00 SP 8.73 33.42 +25.17 –15.62

IP5 10/12/2015 04:56 0.08 V 10.46 36.56 +25.41 –17.08
IP5 10/12/2015 05:06 0.50 B 10.46 36.56 +25.41 –17.08
IP5 10/12/2015 05:15 0.07 R 10.46 36.56 +25.41 –17.08

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