On Sat, 21 Nov 2009 10:39:14 -0000, "Androcles"
wrote:


"Henry Wilson DSc ." HW@.. wrote in message
.. .
On Sat, 21 Nov 2009 08:53:57 GMT, HW@..(Henry Wilson DSc). wrote:
Sorry, here's the website:
www.scisite.info/R Cru2.jpg

Henry Wilson...www.scisite.info/index.htm

Einstein...World's greatest SciFi writer..


There you are, you old bugger. When you didn't show for a
couple of days I was getting worried about ya.
If you want to space in a URL you need "%20", like this:
www.scisite.info/R%20Cru2.jpg

OK Try this: http://www.scisite.info/r_cru.jpg

Pretty convincing, eh?

Note, 'velocity' is true radial velocity towards Earth. It includes pitch. I
haven't bothered to set either distance or velocity at any measured value
because I cannot find reliable figures. Hipparcos and Tycho give different
values for parallax. 1.9 and 3.1 mas respectively. However, the product
(distance x velocity) is the important factor. Reducing one by a particular
factor and increasing the other by the same amount produces the same curve, as
you should know.


Henry Wilson...www.scisite.info/index.htm

Einstein...World's greatest SciFi writer..