[alma-config] Difference images for the simulations using theSIL

[Stephane Guilloteau]

>
>>
>>     I feel the approach of using the full resolution image to compute the
UV
>> data set is closer to reality.
>> However, it should not matter so much which approach is used if sampling
is
>> adequately preserved.
>>
>>         Hope this can be useful for you
>>
>>         Regards,
>
>I see your point about being closer to continuous
>reality, but even in the downsample first before generating uv approach
>there are always 4-5 pixels per beam so as you say the sampling effects
>should be small, and at least no larger than in the A-array
>simulations.
>
>Since this registration problem has held up the AIPS sims for a month
>a two already, - and we don't want to wait even longer maybe Steven should
>go ahead and generate the B,C,D results quickly with the downsample first
>approach and then while  we are looking at the results try to apply the
>strategy you have develeped for your GILDAS sims to his AIPS ones.
>
>  John.
>
    Quite true: let's go ahead in that direction.

        Stephane