More overlap with 21-cm surveys?

[eteq]

Has there been much/any discussion about what level of value there is in pushing some shallower bits of survey north to get more overlap with the large Arecibo HI surveys (i.e., ALFALFA and GALFA-HI) and in the future, maybe even FAST? The Arecibo surveys are more-or-less 0 < Dec < 30, so even a bit of a bump further north might give quite a bit.

I can give more on the science cases I have in mind if desired, but wanted to test the waters first...

(And this was prompted by @bethwillman's plugging of this at the LSST/OIR study)

[drphilmarshall]

Hi Erik ( @eteq ) ! There has not been much discussion of this, no. On the cosmology side, there have been wonderings about pushing the survey area further north to overlap more with DESI, but the gains have not been well quantified yet. What metric(s) would you use to argue for such a change in survey region? Numbers of discovered objects, precision in some statistical model parameter, or what? It would be great to write some of these down before pitching a new OpSim run to probe the effect on the other science cases of shifting further North.