Drift scans in the (southern) circumpolar regions are often very rewarding, one can use long integration times due to the slow fringe speed near the pole.
This allows to get the last little bit of sensitivity out of the setup.
Extracts from recordings :
All above sources were recorded under the following settings :
I.F. detector output ~ 110mV , a.c. gain x2 , differentiator ~ 300 secs. , integration 60 secs.
d.c. gain x 400
