  HH 30 is an edge-on disk around a young stellar object. Previous imaging with
the Hubble Space Telescope has show morphological variability that is possibly
related to the rotation of the star or the disk. We report the results of two
terrestrial observing campaigns to monitor the integrated magnitude of HH 30.
We use the Lomb-Scargle periodogram to look for periodic modulation with
periods between 2 days and almost 90 days in these two data sets and in a
third, previously published, data set. We develop a method to deal with
short-term correlations in the data. Our results indicate that none of the data
sets shows evidence for significant periodic photometric modulation.
