We have only 2 Blue and 2 White OTAs available at the sale price for a limited time. These are in stock for prompt shipment. Buy today and save $25 off the regular price!
Packages Available
OTA Package [ZS66-SD-B/W]
- ZS66mm f/5.9 OTA with L-bracket base
- Aluminum Case
Product Information
A small-aperture but extremely-portable Apo scope at a great price! The ZS 66 SD Doublet Apo is here to fit all your needs at a bargain price!!
The newest ZenithStar II generation Doublet APO is a 66mm ED refractor ideal for everyone who needs an excellent back-up scope/ guiding scope at an excellent price, or a great first APO refractor that you can use for planetary work, wide-field imaging, and crisp, high power observations.
This is an air spaced f/6.8 refractor with 1:10 microfocuser and aluminum case included in the price. The scope boasts premium Japanese Ohara FPL-51 ED glass and Fully Multi-Coatings for excellent sharpness and color correction.
Sharp to the edge and color free, no other scope will beat its price/quality ratio! Excellent mechanics and fit and finish, Crayford 2-speed fine focuser, super-high transmission multi-coatings, aluminum case. The fast focal ratio makes it your ideal fast set-up for travel astrophotography or piggybacking.
Lens Design
• 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.
Low CA
• Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
• 66 mm clear aperture.
• Glossy metallic paint in blue and white: different from anodizing, it does not easily get fingerprints.
Nothing Left to Chance
• Perfect for EAZY-T Alt-Az Mount. You can slide it directly into the mount without a plate if you like.
• Fully CNC machined production, no plastic parts used.
• Drawtube travel length 63 mm with graduated scale.
Super Portable
• Retractable dewshield, smallest size ever and enhanced portability!
• SCT thread adapter to 1.25” eyepieces with anti-marring brass compression ring.
• Can mount a WO 2” SCT star diagonal for use with 2” accessories.
Astrophotography Super-Apo
• Fast focal ratio for bright, high-quality astro-imaging.
• Dedicated field reducer/flattener available.
• 2" adapter available for astrophotography.
• Perfect for piggybacking as guide scope.
Wonderful WO Microfocuser
• William Optics rotatable Crayford focuser, smooth and precise, ideal during astrophotography.
• Adjustable focuser tension.
• Super-smooth and reliable 1:10 micro focuser for fine focusing during imaging and visual observations alike. Attention to Packaging
• Exclusive aluminum case or soft carrying bag included in the price.
• Water resistant.
• Carry-on size: you do not have to leave your treasure home!
• Two-year, no fuss warranty and constant customer service!
| 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 Mount |
L Bracket Based |
| Field Stops |
10 Baffles |
| Tube Diameter |
2.95" (75mm) |
| Tube Length |
11.8" (300mm) Fully Retracted
14.2" (360mm) Fully Extended |
| Tube Weight |
3.5 lbs. (1.61kg) |
| Case |
Aluminium Case (Standard) |
Case Dimensions
(WxHxD) |
15" x 9.6" x 6.5"
(38.5cm x 24.5cm x 16.5cm) |
| Case Weight |
3.5 lbs. (1.61kg) |
If you have any comments or reviews you'd like to share with us, please email us. Thank you. |
