[ATM] Banishing the diagonal

[artbianconi@blast.net]

Hello Gary,

I've been following this string with interest and it occurs to me 
that before too much longer, secondary mirrors will likely all 
but disappear from the OTA. 

It's inevitable that as CCD receptors improve their resolution, 
there will come a time when you can place one precisely at the 
focal point of the primary, capture the entire image and send the 
signal to a high definition TV after putting it through software 
enhancement.

Art

Hello,

I've been considering (from a perspective of almost no 
knowledge) the problem of minimizing the secondary 
obstruction in a standard Newtonian design. Could the 
following work:

Place a lens immediately alongside a much smaller than usual
diagonal so that the cone of light, hitting the diagonal at
approximately focus, would be refocused to a point comfortably
outside the tube.

If this wouldn't work - and I mean "work" in a practical, do-
able, giving comparable results to the standard methods, way, why
not?

Thank you,

Gary Fuchs



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