RS Oph in 1967. All the data are from the AAVSO in the
V band. The small circles are for individual magnitudes, while the large circles are for 3-day averages for days 177–367. The
V-band light curve well fits the template pretty well. However, the light curve is somewhat high around day 100, and falls
below the template with a minimum around day 300. I interpret this as simply being that the red giant companion star is fading
and near minimum around day 300.