Re: Da Plan

["Tom Droege" <droege@snapmail.us>]

The focus does get better as the I lens is stopped down.  Unfortunately,
Rob's software does not allow taking different exposure lengths.  So the
way to get similar sky background is to stop down the I lens.  Not so bad,
I think.  There is something strange about the focus.  It does not seem to
stay put.  It did stay put with my software, so I am trying to track down
what is going on.  Sigh!  There is always something.

Tom Droege

>
> Stopping down the lens seems like a waste of photons.  Yes I can
> see where it would keep bright stars for saturating but using
> a shorter exposure on the I-band camera would do the same thing
>
> It would be great if you could take two I-band exposures for
> each V-band.  I've forgotton the readout time and where the
> bottleneck is (ADC, ISA bus, ...) but if possible a 2 to 1
> exposure ratio would let you put to use all the light that
> falls down on the lens.
>
>
> Chris Albertson
>   Home:   310-376-1029  chrisalbertson90278@yahoo.com
>   Cell:   310-990-7550
>   Office: 310-336-5189  Christopher.J.Albertson@aero.org
>   KG6OMK
>
>
>
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