Fig. 1
Top: a cut-out of the B11 V reference image corresponding to the field of view of the EMCCD camera. Bottom: finding chart (constructed using our reference image) for the variables confirmed by B11 and the two new variables V57 and V58 (note that V58 is not the star that is located at the upper right edge of the circle). North is up and east is to the right. The image size is 45 × 45 arcsec2. Notice the greatly improved resolution compared to the B11 finding chart.
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