Re: [ATM] Meade 'Fesses up

["Richard F.L.R. Snashall" <rflrs@rcn.com>]

vladimir sacek wrote:

>
> For the above system and BK7 corrector optimized for the e-line
> (546nm) it gives ~6 microns red blur diameter
> (C-line), ~5microns blue (F-line) and about 16 microns violet blur 
> (h-line).

One bit of note here: From the appearance on the website, Meade optimizes
to the d-line, not the e-line; from what I've seen of single glass SCs, that
tiny spot size occurs at only one wavelength.  Setting that at the d-line
actually ends up with a poorer scope, if one uses photopic Strehl ratio as
a quality measure.

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