Re: ROB is running

[Stupendous Man <richmond@a188-l009.rit.edu>]

  Tom wrote:

> I note that like TOM1, ROB has a sharp focus on the V camera and a not so 
> sharp one for the Ic camera. 

  The same is true for the Rochester Mark IV.  The I-band
camera's best FWHM is larger than the V-band camera's.  In addition,
the I-band focus is "soft" compared to the V-band focus: even a little
change in position throws the V-band camera out of best focus, 
whereas one can move the I-band camera four or five times as far
before a similar fuzziness appears.

                                              Michael