As part of an effort to better characterize bright cataclysmic variables ( CVs ) and related systems which have received little attention in the past light curves of four systems ( V504 Cen , KT Eri , Ret 1 and CTCV 2056-3014 ) are analyzed .
For some of these stars no time resolved photometry has been published previously .
While flickering is observed in all systems except Ret 1 , it is particularly strong in V504 Cen and CTCV 2056-3014 .
In the latter star , a previously observed 15.4 m period , leading to its tentative classification as an intermediate polar , is probably spurious .
Variations on time scales of hundredths of days observed in the pre-outburst light curve of the classical nova KT Eri continue after the outburst but appear not to be strictly periodic .
Furthermore , the long term post-outburst light curve exhibits modulations with quasi-periods of quite different length .
Thus , these variations can not be due to aspect related variations in a system with a giant component similar to some recurrent novae .
Instead , the system possibly exhibits variations with a period of 0.1952 d which may be orbital .
However , any such conclusion still requires confirmation .
The absence of flickering in Ret 1 indicates that the system probably does not contain an accretion disk .
Instead , the observation of slow variations supports a previous suspicion of low amplitude variability with a period > 12 h .

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Keywords : Stars : novae , cataclysmic variables – Stars : individual : V504 Cen – Stars : individual : KT Eri – Stars : individual : Ret 1 = P83l-57 – Stars : individual : CTCV 2056-3014