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Old 30-06-2017, 10:54 PM
Wavytone
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New ultra-flat eyepiece series from APM

http://www.apm-telescopes.de/en/eyep...eyepieces.html

There's a thread over on CN about these, they were designed specifically for APM and the internal construction is shown.
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Old 01-07-2017, 10:32 PM
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pgc hunter
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Focal lengths way too long. Prices look alright though. If they make them in 2-3mm I'm in.
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Old 02-07-2017, 02:14 PM
Wavytone
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These are not optimised for fast newtonians. Bear in mind the european market which APM cater for is mainly refractors with flatteners, SCT and maksutovs, and Markus Ludes has a 16" mak.

And over small fields typical of eyepieces under 7mm field curvature shouldn't be an issue anyway.

Even with my my maks I could use 50 or 60mm eyepieces.
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