Re: ATM Very wide field eyepieces

["Richard Keppler" <rkeppler@telusplanet.net>]

On Thu, 29 May 1997 15:11:40 +1000 (EST), Peter or Marian Robinson
wrote:

> My question is: should I do the conventional thing and buy a set of 50
>degree Plossls and a Barlow or, for not very much more, a short focal length
>very wide angle eyepiece?  If I need a Paracorr or similar to make a very
>wide angle eyepiece worthwhile then I will not only have to budget for it
>but I will also have to buy a 2" focuser. I would greatly appreciate advice
>from anyone who has experience with very wide angle eyepieces in Newtonians.

 At f/7.5 you will not need a Paracorr with any eyepiece.  For f/4 to
f/5 systems it is a must, but above about f/6 it isn't required.  Get
the 2" focusser though anyway, even if you do not plan on getting 2"
eyepieces anytime soon.  You just never know when one will show up at
the right price.  

Rick.