Re: [ATM] Best webcam/ccd for Foucaultgrams?

["Bob May" <bobmay@nethere.com>]

Remember that all you need is a single lens to do the work for a Foucault
test.
The reason for this is that most of us are using a colored LED rather than a
white LED or other broadband light source.  This means that you don't need
to do any color correction in the lens for seeing the light reflected from
the mirror under test.
As such, it becomes a lot easier to just put a lens from the lens box in
front of the camera (with it's original lens removed) and see what the
results are when you get the lens in the focused position.
Bob May
bobmay@nethere.com
http://nav.to/bobmay
http://bobmay.astronomy.net

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