FK5 glass

Started by mnevitt, 08/20/2007 05:35PM

Posted 08/20/2007 05:35PM Opening Post

Forum Member

Join Date: May 2005

Location: Middlesex NJ, US

Posts: 10

Is there any advantages to designing an achro that uses Fk5 and a lanthanum mate glass. I thought tht lanthanum was used for eyepieces.

Mark

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