[2] The catalogue is fixed in number of entries, but its data is maintained, and it is appended with a comments section about the objects that has been steadily enhanced.
[3] Following its release, Pickering promoted a broader stellar survey for the southern celestial hemisphere, equally as thorough as the Harvard Photometry of 1884.
The edition of 1991 was the fifth in order, a version that introduced a considerable enhancement of the comments section, to a little more than the size of the catalogue itself.
[5][6] The Harvard Revised Photometry, based on visual observations, has been superseded by photo-electric measurements using band pass filters, most prominently the UBV photometric system.
Dorrit Hoffleit with Michael Saladyga and Peter Wlasuk published in 1983 a Supplement with an additional 2603 stars for which a V magnitude of brighter than 7.10 had been measured at that time.