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Old 02-11-2014, 07:44 PM
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FlashDrive (Poppy)
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Join Date: Apr 2008
Location: Bribie Island
Posts: 5,068
How much Glass....

I have a reasonable question to ask of those who have more experience than myself... when it comes to Refractors..

It's about how much ' glass ' in the optical path is ' BEST ' for ' visual 'use only.....forget Astro-Photography.

A ' doublet ' configuration or ' triplet ' ......and we are using either FPL-53 or Fluorite..... forget Achromats.

I know from reviews etc that ' triplets ' exhibit better colour correction or so we are told....but the more glass ( as some say ) only adds to ' more ' interference of the ' photons ' before it finally gets to the eyepiece.

or ....is this no big deal in the schemes of things for ' visual ' use....so do we make a choice ( budget depending) and go on our own instincts.

Col.....

Last edited by FlashDrive; 02-11-2014 at 10:18 PM.
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