At the present time the RAs and DECs in the input list of exposures have
not been corrected for the unknown offset between the measured and true
positions of the centre of the OM camera field-of-view. Hence, this could
lead to sources being spuriously treated as being the same one, although
it is currently believed that the offsets will change very little from one
exposure to another within an observation. If this is confirmed, then
omsrclistcomb may eventually correct the positions when the master source-list
table has been produced- otherwise omatt will attempt to correct the positions
for each source-list, although this clearly won't be possible when the image
only contains a few stars.
