I am selling my little-used Intes four eyepiece turret. Here is what Intes has to say about this product:
"The INTES turret assembly is fully rotatable through 360 degrees with a positive "click-stop" at each eyepiece holder. The diagonal mirror in this assembly is 96% dielectric coated with a surface precision of about 1/15 wave p.t.v. Each eyepiece is held firmly in place by a brass clamp ring that grips the entire circumferance of the eyepiece barrel."
Mine has several user-installed upgrades:
1. The rotary action has been reworked to make it consistently smooth and even. (There is a design flaw in the stock unit that can cause the turret to become very stiff and even freeze up. This happened to mine right after purchase, and Intes furnished me with the blueprints and documentation-- which I will provide-- to make a fix.)
2. The mirror has been fixed into position on its pedestal (in the stock configuration, it is possible for the mirror to slip a few degrees around the shaft as the turrent is rotated)
3. The pot metal screws on the brass clamping rings have been replaced by non-marring/non-galling brass thumbscrews
4. There are calibration marks (removable tape) to indicate when the turret is in the correct position for each eyepiece
In the interest of full disclosure, there are two cosmetic flaws on the unit:
1. The top of the turret housing has some scratches where I had to remove it to rework/smooth the rotary action
2. When the turret seized up during first use, it rotated in my SCT's visual back, causing some scratching on the mounting stem of the turret.
Both of these are cosmetic only --comparable to set screw marks on a eyepiece barrel.
I paid $300 less than two years ago for this unit, and they still retail for $300 and up-- if you can find them in stock. I'm asking $225 shipped/insured in CONUS.