eyepiece turrets for reflectors

I've never been able to really get why ep turrets aren't more popular for refractors and S/Cs. There are very few on the market. I have one from Seven Wonders that does a good job although it's not a $500 TEC or Tak, and I wouldn't trade it for anything. The time it saves in swapping eps make especially double star observing much more efficient, but even for plantary and deep sky it's great. So I wonder why they haven't really taken off.

And then comes my next question: not only refractor and S/C users can benefit from ep turrets--so too could those who use newtonians and mak-newts, etc. And without needing a diagonal, in some ways it is simpler to construct. So why never a turret for a reflector?

thoughts?

doug

Hi Douglas,

Apogee has something like this, but my guess is the adapter uses a lot of back focus.

http://www.apogeeinc.com/accessories.html

David Simons

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Hey Doug, do you have a url for the Seven Wonder turret?

Many thanks, Don