RE: [ATM] Star test with laser light sources

["Jerry" <wa4guu@verizon.net>]

	It is not necessarily a good or a bad idea. In the case of
artificial star testing a mirror I can think of no advantage with
monochromatic light and none with coherent light.

	Remember I did say that I had no first hand experience. I meant none
with artificial star testing. I have used a real star. It was not
monochromatic. I can not think of a reason monochromatic would be an
advantage. If there is I am sure some list members will suggest that I don't
know what I am talking about, which may be true.

	I don't know if the coherence of the laser matters. I am thinking
that monochromatic light will have more noticeable interference effects.
White light interferes but at different locations for different wavelengths
making it less sharply defined to the eye.

	I like the Christmas ball idea for an artificial star. I think most
people use the Sun's reflection. It probably needs to be lit by a bright
light.

	Where are all the artificial star testers I was arguing with a while
back? I thought my "conjecture" answers would have provoked massive
responses by now. Help me out Richard! They must be getting used to me.

Jerry  



Ray J wrote
Is monochromatic light a bad idea?  For example, a bright yellow LED? 
(Not a laser)


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