Re: A new style reflecting telescope
- From: John Bailey <john_bailey@xxxxxxxxxxxxxxxx>
- Date: Mon, 19 Nov 2007 08:02:38 -0500
On Mon, 19 Nov 2007 04:30:08 -0800 (PST), tontoko
<square17320508@xxxxxxxxx> wrote:
In general the reflecting optical telescope has a large-aperture
concave mirror for gathering and focusing light from astronomical
bodies. As you've known, larger the size of mirror becomes, more
difficult making such mirror with sufficient accuracy. Here is an
alternative method to avert such difficulty;
http://hecoaustralia.fortunecity.com/telescope/reflect.htm
The aperture of the scanning mirror now becomes the limiting geometry
for diffraction. What has been gained? Why does a telescope need a
large aperture anyhow? (rhetorical question) Am I missing something?
.
- References:
- A new style reflecting telescope
- From: tontoko
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