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Table A.1

Journal of available photometry of V2368 Oph.

Station Time interval No. of Passbands HD of comparison Source
(HJD − 2 400 000) obs. /check star

1 542 73.4–550 61.4 423 UB V 154660/154895 this paper
30 520 65.8–542 76.8 152 UB V *) this paper
66 527 65.4–527 66.6 10 UB V 154660/154895, 154445 this paper
61 479 12.6–490 61.9 111 V all-sky Perryman & ESA (1997)
93 530 55.9–532 90.5 47 V all-sky Pojmanski (2002)

Notes. Individual observing stations are distinguished by running numbers they have in the Prague/Zagreb photometric archives – see column Station”: 01 ... Hvar 0.65-m, Cassegrain reflector, EMI9789QB tube; 30 ... San Pedro Mártir, 0.84-m reflector, Cuenta-pulsos photometer; 61 ... Hipparcos all-sky Hp photometry transformed to Johnson V; 66 ... TNO 0.40-m Cassegrain reflector, SSP5A photometer; 93 ... ASAS data archive (Pojmanski 2002). *) All-sky photometry or differential photometry relative to various comparisons during the first season when V2368 Oph was used as a comparison for observations of U Oph, then relative to HD 154660 – see the text for details.

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