I hit the "d" key too quickly. Was a gross parameterization of photometric variability one of Ken's 6 enabling computations?
With respect to how big we let the DM load get, are there ground rules as to the sorts of queries that LSST will accept? Wearing my Pan-STARRS hat, I tried to break SAIC's implementation of Oracle's version of USNO-B by giving it the wide physical pairs problem in SQL. The task is to see if there are pairs of stars with similar proper motions but very widely spaced on the sky (as differing from the normal common proper motion problem where the stars are relatively close together on the sky). Needless to say, Oracle never did finish looking for any star with another star having the same motion but more than 150 degrees away. Its default search was about as inefficient as one can imagine, and N**2 searches where N is big can take a very long time. At what level of complexity does the server reject a query, and once rejected, what is the path for the user to take into the LSST archive? -Dave _______________________________________________ LSST-data mailing list [email protected] http://www.lsstmail.org/mailman/listinfo/lsst-data
