For problems related to single pointings, the single pointing can be
changed to a raster (microscan) with sufficient offset to fully place
the PSF of any object in the "hole" on a good portion of the
array. e.g. Use a raster of minimum size 2 in M and 1 in N with a step
size larger than the Point Spread Function.
In some cases (e.g. CAM04 - CVF observations) raster observations
are not possible. In this case, one or more concatenated observations
at appropriate offsets must be used. Since pointing offsets cannot be
specified in spacecraft co-ordinates and the orientation of column 24
with respect to RA and Dec is, in general, unknown, there is a small
risk that a single concatenated observation at a particular offset
could move the spacecraft in a direction nearly parallel to the
missing column.
For raster maps without sufficient overlap, the raster geometry can be
changed to one using a smaller step size.
PLEASE NOTE that for Solar System Objects, where the raster mode is already
in use for tracking and concatenations are restricted, these solutions are
not applicable.