VX Hya (2011-2012 season) [Observed: 21, 22, 27 Feb, 13 Mar 2012]
Time-series are presented for this pulsating star, after its sudden pulsation change in 2008 and after the 2010-2011 season observations.

VX Hya (2010-2011 season) [Observed: 5, 7, 8 Feb, 4 Mar, 9 Apr 2011]
Time-series are presented for this pulsating star, after its sudden pulsation change in 2008.

VX Hydrae: observation of a sudden change in a pulsating star [Observed: March 2005-April 2010]
Time-series of VX Hya from March 2005 to April 2010 are analyzed. A period jump is discovered to happen in 2008 in all the pulsation modes, being at its strongest for the overtone.

VX Hya (2008-2009) phase variations [Observed: 24, 27, 28 Dec 2008, 29, 30 Jan, 17, 19, 22, 23 Mar 2009]
The strong phase shift that I detected in 2008 is confirmed with new observations.

VX Hya (2008) free fall? [Observed: 7-13 Feb 2008]
Time-series for this pulsating star with multiple oscillations are obtained. They are compared with the ephemeris of Fitch (1966): they are too early by 3.7 hours. This is a strong change from previous, recent observations.

VX Hya long term variability [Observed: 24, 25, 26, 27 Dec 2006]
Time-series for this pulsating star with multiple oscillations are obtained. They are compared with the ephemeris of Fitch (1966): there is a delay of 1.2 hour. I also compile various observations and derive an O-C diagram from 1954 to 2007.

EH Lib: 2007 follow up [Observed: 24 Apr, 7, 12 July 2007]
Time-series of this DSCT pulsating star with a period of 2.1h are presented and compared with 2004-2005 observations.

VX Hya time keeping [Observations: 10, 11, 13, 16, 17, 18 March 2005]
Time-series for this pulsating star with multiple oscillations are obtained. They are compared with the Fitch (1966) ephemeris: the matching is still good but with a delay of 1.4 hour.

EH Lib regular pulses [Observations: April-May 2004, March-April 2005]
The pulsating star EH Lib was observed and 15 pulses were measured. They are in phase with the 55-year old ephemeris of the GCVS (may be late by 2 or 3 mn only).