It appears that my delta T values again come out
some ~0.3s "early" relative to other stations.
As this was not the case for my August data, I have
begun to suspect it is the result of my recent
change in camera settings (other setting for colour
and contrast, to bring out fainter trails better).
Apparently, this also changed the intitiation time
of the camera by an extra 0.3s.
As of now I will use the empirical 0.3s value to
adjust my timings accordingly.