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View Full Version here: : [SOLD] William Optics 66 SD DOUBLET APO Refractor.( WITHDRAWN)


Digby
03-04-2010, 05:54 PM
Selling my WO ZS 66SD Refractor. OTA ONLY.
A small-aperture and extremely-portable APO scope.
Makes a great spotting scope for birding.
Look on Cloudy Nights or elsewhere for glowing reviews on this scope.

SD glass (Japanese Ohara glass) doublet air-spaced, in CNC machined ultra-high precision lens cell. Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.

66 mm clear aperture and fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.

Aperture: 66mm
Focal Ratio: F/5.9
Focal Length: 388mm >
Objective Type: SD Doublet, Air Spaced,
Fully Multi-Coated: STM Coatings
Resolving Power: 1.78"
Limiting Magnitude: 10.8
Lens Shade Retractable
Focuser 1.6" (40.6mm) Crayford Focuser
Adjuster, 1:10 Fine Focus
63mm (2.5") Focuser Travel Length
Rotatable Focuser Design
1.25" Adapter Brass Compression Rings
L- type dual purpose mounting for tripod mounting or dovetail
Field Stops 10 Baffles
Tube Diameter 2.95" (75mm)
Tube Length 11.8" (300mm) Fully Retracted
14.2" (360mm) Fully Extended

Tube weight: 1.61 kg

In excellent, as new condition.
Comes with Soft carry case, and dust cover.

Price: $ 390.00 plus postage. :thanx: