Description
William Optic Zenithstar 66 SD APO – White/Blue
including:
ZS66SD OTA (optical tube assembly), 1.25″ Diagonal, SWAN 15mm Eyepiece
1:10 Crayford Focuser
Sharp to the edge and color free, no other scope will beat it’s price/quality ratio!
Excellent mechanics and fit and finish, Crayford 2-speed fine focuser, super-high
transmission multi-coating, aluminum case. Fast focal ratio makes it your ideal fast set-up
for travel astrophotography or piggybacking.
LENS DESIGN
- SD 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 C.A.
- Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast
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 part 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.
- Perfect for piggybacking as guide scope.
BEAUTIFUL ANODIZING
- Superior anodizing will not only give you a beautiful telescope, but also protect it by making the surface much harder than natural aluminum.
- Can mount a WO 2” SCT star diagonal for 2” accessories usage.
- 2″ adapter available for astrophotography.
WONDERFUL WO MICROFOCUSER
- William Optics rotable Crayford focuser, smooth and precise, ideal for astrophotography.
- Adjustable focuser tension.
- Super-smooth and reliable 1:10 micro focuser for fine focusing during astrophotography or visual observations alike..
ATTENTION TO PACKAGING
- Exclusive Aluminium carrying case included in the price. Optional soft carrying case available.
- Water resistant.
- Carry-on size: you do not have to leave your treasure home!
- Two-year, no fuss warranty and constant customer service!
Specification :
| Aperture | 66mm |
| Focal Ratio | F/5.9 |
| Focal Length | 388mm |
| Objective Type | SD Doublet, Air Spaced, |
| Fully Multi-Coated, STM coating | |
| Resolving Power | 1.78″ |
| Limiting Magnitude | 10.8 |
| Lens Shade | Retractable |
| Focuser | 1.6″ (40.6mm) Crayford Focuser |
| Adjuster, 1:10 fine focus | |
| 63 mm (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 | 15″ x 9.6″ x 6.5″ |
| (WxHxD) | (38.5 cmx24.5 cmx16.5 cm) |
| Case Weight | 3.5 lbs. (1.6kg) |
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