Spectral line changes in RR Telescopii, 1961–72

Spectrophotometric measurements of the nova-like variable RR Tel secured at Cerro Tololo in 1972 with a photoelectric spectrum scanner are compared with previously reported photographic measurements and some photoelectric spectrum scans obtained at Mt. Stromlo in 1961. We have attempted to use these data to calibrate the photographic measurements which had much higher spectral resolution. This effort is complicated by the change of the spectrum with time; [FeVII] and [NeV] seem to be increasing with respect to Hβ, while [FeVI], [oIII], and [NeIII] appear to be weakening.