Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: Re: Which wide angle 12-14mm fl eyepiece for my 12"

 
  [index] [month] [prev] [next]
 
Subject: Re: [M]: Re: Which wide angle 12-14mm fl eyepiece for my 12"
From: Bill Arnett
Reply To: mapug@shore.net
Date: Sun Aug 13 01:11:14 2000

While you're here, how about checking out the Astronomy Book List ?


> ...
> Someone, I think on this list, said that the perfect planetary eyepiece is
> one that yields a 1mm exit pupil. For an 8" f/10 LX200, that would be a 10mm
> eyepiece...

Also true for the 10" f/10 and 12" f/10 and any other f/10 scope. In
general, exit pupil equals eyepiece focal length divided by f number.

--
Emerald Hills, CA USA http://nineplanets.org/



View index by [date] [author] [subject]
Previous message: Re: [M]: The SKY and LX200, Keith T. Johnson
Next message: [M]: Re: The SKY and LX200, Joseph Miele
  [AstronomySite] Return to the www.AstronomySite.com home page
  [ShareWareEtc] Looking for great shareware? Then try Shareware Etcetera
  [Newsgroup Info] Want to learn more about how internet newsgroups and newsgroup downloaders work?
  [Astronomy Book List] Great prices and a great selection on astronomy books!