William Optics Zenithstar ZS71 ED 20th Anniversary Limited Edition

William Optics Zenithstar ZS71 ED 20th Anniversary Limited Edition
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William Optics Zenithstar ZS71 ED 20th Anniversary Limited EditionWilliam Optics Zenithstar ZS71 ED 20th Anniversary Limited EditionWilliam Optics Zenithstar ZS71 ED 20th Anniversary Limited Edition
William Optics Zenithstar ZS71 ED 20th Anniversary Limited EditionWilliam Optics Zenithstar ZS71 ED 20th Anniversary Limited EditionWilliam Optics Zenithstar ZS71 ED 20th Anniversary Limited Edition
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Model:  wo_zs71_anniversary_ota
Part Number:  A-Z71A-VP20A
Brand:  William Optics

INCLUDED IN THE BOX

  • Telescope OTA
  • Vixen compatible L-Bracket
  • Soft Carry Bag

Limited 20th Anniversary Edition in Red

The William Optics Zenithstar 71 ED features a high contrast f/5.9 doublet objective with an Ohara FPL51 ED element and a new, upgraded dual-speed 2-inch Crayford V-power focuser with a smoother action and no image shifting with a capacity of up to 6.8kg (15lb). 

It's fast focal ratio and short tube length make it an ideal traveling set-up for wide-field astrophotography, piggybacking or as a spotting scope.

Features a retractable dew-shield and a Vixen-type foot so will fit directly into a suitable saddle. 

The high quality fit and finish is typical of William Optics telescopes. 

Includes high quality soft carry case.

William Optics ZS71 review  Sky at Night Magazine 

Compatible with the William Optics 0.8x Reducer-Flattener 6 for imaging at f4.72 

FEATURES

    Lens Design

  • ED glass (Japanese imported 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 C.A.

  • Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
  • 71 mm clear aperture and F/5.9 focal ratio.

    Nothing Left to Chance

  • Perfect for Vixen type mounts. You can slide it directly into the mount without a dovetail plate if you like (telescopes comes with Vixen compatible style L-bracket).
  • Pure William Optics quality fit and finish: powder-painted white CNC-machined Aluminium tube.
  • Retractable dewshield, smallest size ever and enhanced portability!
  • Can mount a WO 2'' star diagonal and other 2” accessories.

    Astrophotography ED scope

  • Fast focal ratio for excellent exposure on photography usage.
  • Flattener Available (optional).
  • Perfect for piggybacking as a guide scope.! !

    2.0" Crayford V-power Focuser

  • New ultra smooth 2" Crayford V-power edition focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting (capacity 6.8kg 15lb)!
  • Comes with two locking screws on angled positions for heavy load applications.
  • Chromed, soft thumbscrews, easy to use even with gloves on.

    Patented Design

  • Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
  • Diamond-coated drive system: very smooth, no lateral movement or tilting. 
  • Drawtube travel length 45 mm with graduated scale for precise camera alignment.

    Attention to Packaging

  • The basic package includes the OTA, Vixen compatible L-bracket and soft carry bag.
  • Carry-on size: you do not have to leave this treasure home!
  • Two-year, no fuss warranty and constant customer service!

Product Videos

Product Specifications

Aperture 71 mm
Focal Ratio F/5.9
Focal Length 418 mm
Objective Type ED Doublet, Air Spaced,
Fully Multi-Coated, SMC coating.
Resolving Power 1.58"
Limiting Magnitude 11
Lens Shade Retractable
Focuser 2" Crayford V-power Focuser, includes 1.25" adapter
1:10 Dual Speed microfocuser
45mm (1.8") Focuser Travel Length
Stainless steel reinforced to reduce flex and increase load capacity
L-type Mount L Bracket
Field Stops Baffles
Tube Diameter 93mm (3.66")
Tube Length 310 mm Fully Retracted
455 mm Fully Extended
Tube Weight 6 lbs. (2.7 kg)

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October 2017 / View Older
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