Hi guys 'n' gals,
I would like to replace the 4"/102mm, f6, achromatic lens in my "replacement" refractor.
T'is a bit "fuzzy" around the edges & the brighter objects "flare."
(Sorry for the texhnical talk.)
Would like a nice, little better quality lens, if available.
I've a'Googled my fingers almost to the bone....but cannot find anything suitable.
Anyone know of any suppliers, makers etc?
Might be interested in an Apo but all depends on cost.