Re: [alma-sw-ssr] Pipeline Requirements new version

[mel wright 456 <wright@astron.berkeley.edu>]

Bryan,

> this appears now excluded by hardware design 

too bad, EVLA looks more fun.

> unlikely in any case  that there are
> enough sources to do that kind of calibration in a significant number of
> projects.

Robert,
	you can check my numbers (maybe wrong ?)

 obsrms freq=40 antdiam=12 tsys=40 nants=60 bw=8000 inttime=.1 min
=> Rms Flux density:   0.142     mJy/beam in 6s.

Kellerman gives  N(S) = 60 S^{-1.5} Sr^{-1}  
[at 5 GHz (?); I think Frazer had some better estimates at mm]

calc '60/.7e-3**1.5*2.1*2.1/3400/3400'
=>  1.2 sources in a 2.1' beam above  5 x RMS in 6s.