A brief discussion revealed that an addition is needed to the file structure defined by H. McCallon and J. Fowler as an example of the type of data structure needing definition in 2MAPPS. Since calibration fields will also be scanned as survey strips, either an identifier for each strip will be needed to specify which kind it is, or else the strips defining calibration fields must be bookkept in a separate file. Furthermore, it cannot be assumed that a given point on the sky belongs either to one strip or is in the overlap zone of two strips; it may also belong to a calibration strip. If separate files are used for survey and calibration strips, then a similar record structure would probably be used, but probably with a larger number of non-overflow scan ID fields for the calibration strips.
Topics that are clearly of interest for this review were identified so that the team could prepare questions and anticipate the sort of exchange of ideas sought. T. Conrow suggested the following questions to consider.