Re: [ATM] Telescope could focus light without a mirror or lens

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

Yeppie!  Diffraction optics is definitely color sensitive.  Then
again, you take a positive lens and put it together with a
negative lens of a different diffraction order and you'll
probably be able to get a color corrected lens of sorts.  Only
get 1% of the light through but you just make a bigeer one if you
want more light!
Bob May

rmay at nethere.com
http: slash /nav.to slash bobmay
http: slash /bobmay dot astronomy.net

----- Original Message -----
From: Richard F.L.R. Snashall <rflrs@rcn.com>
To: <atm@atmlist.net>
Sent: Friday, May 02, 2008 6:00 PM
Subject: Re: [ATM] Telescope could focus light without a mirror
or lens


> Bob May wrote:
> >
> > All in all, something that is neat for doing crude optics
with
> > but not going to be used for astronomical purposes as it is
not
> > going to do the job.
> The fine print I read had me thinking that the results were
> strongly dependent on wavelength, perhaps as much as a singlet.
>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>

_______________________________________________
ATM mailing list http://www.atmlist.net/