Quote:
Originally Posted by Larryp
Hey Morton, they are a remarkable little scope, aren't they? An FPL51 doublet with virtually no false colour! Vic Maris reckons the lens design is more important than the glass type for colour correction.
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And colour correction isn't the most important thing anyway. I've had ED doublets with FPL-53 that were better corrected for colour but showed less detail because they weren't as well corrected for other aberrations and had less contrast. I was shocked the first time I looked at Jupiter with the SV80ED - there was so much more detail than I expected.
For photography colour correction is important as any blue fringing is exaggerated but for visual it's much less so. What Vic does is make the lens pretty much as good as it can be (he also states that their minimum standard for all lenses is a Strehl ratio of 0.95).
So as a visual observer I'm extremely happy with my SV80ED and SV110ED. They're a great combination!