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Old 03-11-2017, 10:48 AM
AstroApprentice (Jason)
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AstroApprentice is offline
Join Date: Dec 2015
Location: Melbourne, Australia
Posts: 307
Hi Gary,
FYI, with the dedicated reducer/flattener for Borg 71FL or 90FL they are no longer doublets - 6 lens elements in 5 groups.

Atmos: Had a look at Borg whilst on a recent trip to Japan, looked OK but very expensive for doublets that by some reports show a bit of color (short FL?) decided that for that money a Tak might be better :-)
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