A Catalogue of Photometric Sequences Supplement No.2

Photometric observers have from time to time expressed the need for a convenient way of finding in the literature the photometric sequences they require. This need is particularly felt in photographic photometry, and the increasing use of the Palomar Sky Survey in recent years, and more recently the ESO and SRC surveys, have given a new impetus to the subject. In addition, the use of image tubes has led to a further demand for suitable calibration sequences.