From: "Dwight K. Elvey" 
To: atm{at}shore.net
cc: JBHillman{at}ev1.net
Reply-To: "Dwight K. Elvey" 


>From: "Jerry B. Hillman" 
>
>Hi all,
>Can someone out there tell me the orientation of the lenses in a Plossel
>eyepiece?
>I had to disassemble one to clean it and am not sure how to put it back
>together.  The eyepiece has three lenses, what appears to be a ring seal, a
>short metal tube that is convave on one end, and a longer metal tube that
is
>flat on one end and has a depression on the opposite, that the smallest of
>the lenses fits into.  The orientation of the first two lenses defeats me.
>They tumbled out of the eyepiece and I lost their proper orientation.
>Any help would be appreciated.
>Clear skies, Jerry
>
>
>

Hi
 Three lenses? Sounds like a Kellner to me. Plossls have
two achromat pairs ( 4 lenses ). Modified Plossls might have a Barlow at
the front. Look at:

http://www.telescope.com/content/learningcenter/content2main.jsp?iCategoryID
=23&iContentID=621&CCNavIDs=19,20,23

 There is a picture of a standard Kellner there and a Plossl.
This should help get things back together. Does your eyepiece look like any of these?
Dwight

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