If non-zero, then an extension called .MORE.SMURF.SHORTMAPS is added to the output map NDF, holding maps made from every group of " shortmap" adjacent time slices. Alternatively, set to -1 to produce a map each time the TCS_INDEX value within the JCMTSTATE extension is incremented (i.e., each time a full pass through the scan pattern has been completed). Any other negative value is interpreted as a duration in seconds, and is converted to time slices using the (possibly down-sampled) sample frequency of the data being mapped. [0]

MAKEMAP, CALCQU