3455 20180126130531.0 SCART-2018-0032 Lampens, P About DR UMa or the CRTS transient CSS110402:135906+554432 2017 We report differential photometric measurements, both unfiltered (filter clear, C) and filtered (filter V), obtained at the Humain station of the Royal Observatory of Belgium (longitude = 5.254, latitude = +50.192, elevation = 280 m) of the CRTS transient CSS110402:135906+554432 (Drake et al. 2009, ApJ 696, 870), which is also identified as DR UMa. The instrumentation is a 16-inch Schmidt-Cassegrain telescope equipped with a Moravian G2-3200 CCD camera. NO Blazar Transient Van Cauteren, P The Astronomer's Telegram 2017 10220 patricia.lampens@observatoire.be published in NONREF