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Table 2

Observing log.

Stars Date Nexp texp Seeing
s

J012512+070319 27-Sep.-2016 6 1600 0.8
J015131+163944 22/28-Sep.-2016 7 1600 1.1
J041800+062308 26/28-Sep.-2016 6 1600 1.0
J094708+461010 28/31-Mar.-2016 10 1827 0.9
J173403+644632 29/30-Apr.-2016 10 1827 1.0

G64-12 1-Jan.-2017 3 30 1.2

Notes. A slit width of 1 arcsec. The moon was gray during all the observations and clouds were not noticeable.

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