[daip] aips

[Amy Mioduszewski]

 > you said that I should choose as short as possible ,and calculate the 
 > percentage of failed solution(failed soln/good soln),and choose the
 > solint based on the lowest percentage of failed solutions)

Well this is just a "rule of thumb", you want the shortest interval 
possible to avoid decorrelation and increase the chance you will get 
sufficient information on the changing phases to interpolate them 
correctly.  But there is no guarantee that the short solution interval 
will give you a better map.  Perhaps the phases do not change very fast 
for your source and/or there is some error (poor uv coverage, bad data 
etc) which matters much more than a slight improvement in phase you 
might get with a shorter SOLINT.

I have very little experience with DIFMAP.  You can try to image your 
data in different time ranges and different IFs and see if you get the 
same structure.  Are you using self-cal?

Amy