[mmaimcal] questions regarding antenna RFP

[Mark Holdaway]

>  1 - regarding the nutating subreflector.  does the pointing spec
>      need to be met while the subreflector is nutating?
> 

YES!  The total power will often (usually?) be used to add to mosaics,
and the single dish's pointing errors are at least as important as the
interferometer elements' pointing errors.

>  2 - regarding offset pointing.  are we (our group) comfortable with
>      the idea of offset pointing correcting some substantial fraction
>      of the pointing error?  
	
	yes

>      especially in regards to wind buffeting.
> 

	unclear; it will help, but probably not to the full extent
	that I claim in MMA Memo 159.  In the compact arrays, the 
	antennas are in each other's wind shadows; we don't know very much
	about how the aerodynamics of the antennas change as you go and
	point at another source...
	we need a "wind affected offset pointing structure function".

	-Mark