DAL sessions in Victoria

[Alasdair Allan]

Rob Seaman wrote:
> The complications for temporal searching are several.  First, you  
> need to be able to search in a barycentric (or arbitrary) time  
> system.  Second, you need to be able to search through some sort of  
> evenly gridded comb filter in cadence - something like "return all  
> images/spectra whose mid-exposure occurred near an even quarter- 
> hour".  Third, you have to be able to specify "near" - "within a  
> window of plus or minus one minute".  Fourth, you may need to be  
> sensitive to some very creative observing modes and data structures.

You might want to have a look at the RTML <TimeConstraint> section  
for this sort of thing...

Al.