Generic Flags:    Avoid bright stars
                  Must have guide stars
                  Avoid exposure time hit due to moon




Unbiased: variable stars      (flag if POSS star)
          AGN                 (flag if known AGN/radio/x-ray source)
          gamma-ray burster   (HETI/SWIFT, etc., X-check)
          SN


          derived software requirements:

               links to APS, APM, USNO catalogs of POSS
               links to FIRST and NVSS catalogs


          derived observing requirements:

               single screening spectrum



Rates sub-sample

          derived software requirements:

               insertion & recovery of fake SNe 


          derived observing requirements

               single screening spectrum



Peculiar velocity sub-sample

          derived software requirements:

               weight assigned based on being nearby and in coverage gap


          derived observing requirements

               screening spectrum
               lightcurve in B & V (minimum)



Calibration sub-sample

          derived software requirements:

               weight according to likelihood of having Cepheids, masers etc.
               using link to appropriate catalogs


          derived observing requirements

               single screening spectrum



Host-galaxy luminosity function sub-sample

          derived software requirements:

               software for galaxy photometry


          derived observing requirements:

               good final reference *image* of host

               single screening spectrum



SN Host properties correlation sub-sample

          derived software requirements:

               software to assess type of host (high-luminosity, low-luminosity,
               spiral, elliptical, LSB, dusty, IRAS, size of 4000A break,
               strength of OII3727, H-alpha, etc.)

               weight according need for given type of host


          derived observing requirements:

               full spectral/lightcurve follow-up



SN properties sub-sample

          derived software requirements:

               software to measure stretch, expansion velocity, colors, early
               phase, and other SN properties

               weight assigned by uniqueness of SN properties


          derived observing requirements:

               full spectral/lightcurve follow-up



Volume-limited sub-sample

          derived software requirements:

                definition of volumes covered by deep (z > 0.1), filled
                redshift surveys

                determination of SN redshift and sky position

                assign weight according to volume-limit and coverage by deep,
                filled redshift survey


          derived observing requirements:

               full spectral/lightcurve follow-up