GSC 318-805 / V551 Vir: a Blazhko star [Observed: 42 sessions from 2009 to 2015]
Photometric observations of the RR Lyrae star GSC 318-905/V551 Vir are presented and analyzed. They show a Blazhko modulation with a period of 53.9 days and evidence for irregularities. An animation showing the Blazhko modulation is presented.

AR Ser: photometric observations of a Blazhko star [Observed: 2010-2014]
Photometric observations in 2010-2014 of the RR Lyrae star AR Serpentis are presented and analyzed. Two Blazhko modulations of comparable amplitude are detected, with the periods 89 and 108 days, and with evidence for irregularities.

KV Cnc []
Photometric observations of this Blazhko star are presented and analyzed.

RV Cet: a Blazhko pulsating star [Observed: 26 sessions in 2009-2011]
Photometry observations of this RRAB pulsating star are presented, with a GIF animation showing the Blazhko modulation.

1RXS J180834.7+101041: a new cataclysmic variable with a nearby RRAB variable [Observed: 2, 3, 5 Aug 2008]
Time-series for this recently discovered cataclysmic variable and for a nearby RR Lyrae variable are presented.

V1356 Aql mystery [Observed: 8, 12, 29 Aug 2005]
I observe flat light curves for this RR Lyrae star.

TV Lib: temperature and radius variations from photometry [Observations: 11, 13, 17, 18 March 2005]
Two-color time-series were obtained for this pulsating RR Lyrae star. The pulsation is too early when compared with the ephemeris. The temperature and the radius variations are computed from different models.