OT_J184228.1+483742 Nishimura-san has detected a bright transient. There was a 20 mag star at the position of the improved astrometry. The object appears to be a high-amplitude WZ Sge-type dwarf nova. All sorts of observations are encouraged! http://www.cbat.eps.harvard.edu/unconf/followups/J18422792+4837425.html