Acer, how do you manage VCR programming?
Just kidding, don't jump me.
Catmaster
> Acer Victoria <siddim01@xxxxxxxxxxxxxxx> moved upon the face of the 'Net
and spake thusly:
>
> > OK, I get it that stars are a point source; no focal length will render
> > them anything other than points. But how dow focal length affect how
> > fast the trails form? How is the motion magnified when the point isn't?
>
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