2. Observations

The typical subset length of 30^d ensures an adequate light curve phase coverage for V 1794 Cyg. These light curves do not seem to change significantly during this time interval (Paper  II). The first observing time of each subset determines the unique SET sequence for any part of collected photometry. Our Table 3 summarizes the relevant information of all 114 subsets: observing time interval, observatory, C₁, C₂, reference and number of observing nights. The collected photometry of V 1794 Cyg is given in Table 4. It contains the UBVRI magnitudes of V 1794 Cyg (Cols. 3-7), their subset numbers and heliocentric julian dates (Cols. 1-2: SET and HJD), and the detected flares (Col. 8: F, see also Paper  III: Sect. 3.1).