Quote:
Originally Posted by gregbradley
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These new Stellarvue SVX102mm sound amazing with strehl around .98, wow.
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Greg.
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But is that Strehl noticeable in the use you want the scope for? Even visually, it just becomes a bragging number because neither the average eye nor sky conditions are going to be able to exploit that.
The colour correction (don't forget most Strehl is measured in green from the centre), and collimation are two big factors that can support or degrade actual field Strehl. Anything less than perfect collimation, thanks for the bump UPS, can negate the difference between 0.93 and 0.98. And then you have focus precision, etc etc.