We have surveyed a large area of the galactic plane in the OH 1612 MHz
satellite line. The aim of the survey was to sample the stellar
dynamics in the plane, cutting through the major components of
the Galaxy. Very strong radiation is emitted in the observed OH line
by, amongst others, OH/IR stars (for a review see Habing 1996). These
are particularly suitable tracers of the stellar dynamics for a
variety of reasons. Most important is that they are easily observable in
any region of the Galaxy, their line-of-sight velocity can be
determined very accurately and they represent a large range of
the stellar population. This article is the sequel of a previous
article (Sevenster et al. 1996, Paper I), that we refer to for a detailed
description of the survey, the objects and the reductional strategy.
In Paper I we discussed the region between 
and 
, the "gBulge region''.
Here we discuss the results of the connecting region, between
and ,
the "gDisk region''. We will not give details of the observations,
reduction and analysis, but mention only the most important
parameters and those that differ
significantly for the two regions of the survey, such as precise
completeness levels and velocity coverage.
We will discuss the observations briefly in Sect. 2 and the data
reduction in Sect. 3. In Sect. 4 we give the results of the survey
in the Disk region and in Sect. 5 a statistical analysis of the data,
along the same lines as that in Paper I.
Figure 1: Upper
panel: noise levels as function of pointing centre, with the diameter
of the circles proportional to the noise in the field.
Lower panel: used integration times as function of longitude
(the scatter is for the different latitudes)