To: "Marco Miglionico" 
Cc: "ATM Archives" , owner-atm{at}shore.net
From: Hugues.Laroche{at}ses-astra.com
Reply-To: Hugues.Laroche{at}ses-astra.com



Buon giorno Marco,

>It's far too fast for a newtonian. (Would paracorr help much?)

Hm, yes pretty fast but I wouldnt say too fast. In this ratio a corrector
of the kind paracorr is indeed mandatory or the ugly coma will spoil your
field of view.

If it is a very good parabola, you are a lucky man and you may have much
pleasure with it. But you will have to spend enough $$$ for good eyepieces
and a corrector.

Or you can do a cassegrain/nasmyth or gregorian/nasmyth, which avoids to
pierce the primary... but there the system focal ratio will be much higher.
Depends if you want to view more DSO or more the planets...

Hugues




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