William Optics Star 71 Generation II 4 Element F/4.9 OTA

William Optics Star 71 Generation II 4 Element F/4.9 OTA
Item # WO-A-STAR71-II
1 Questions(s)

Scheduled Delivery

  • The William Optics Star 71 Generation II 4 Element F/4.9 OTA is the new model replacing the old William Optics Star 71. While similar in many regards, it is new and improved- boasting several new features that make it a solid upgrade from it's previous edition!
  • The William Optics Star 71 Generation II 4 Element F/4.9 OTA is a stellar quality imaging scope that boasts not only top quality optical performance, but extreme portability and ease of use! It is perfect both for experienced astro-imagers on the go, and for relative newcomers.


William Optics Star 71 Generation II 4 Element F/4.9 OTA

William Optics was happy to declare the Star 71 their finest scope yet- but that's changed with that scopes successor. Now they've outdone themselves once more, surpassing even the sky high bar set by the first Star 71! The Generation II Star 71 is it's predecessors equal in performance and mechanics, but has a key difference that marks it as an upgrade. The Star 71 made use of a five element design in which only one of those five elements utilized FPL-53 ED glass. The Generation II model makes use of a four element design, but two of it's elements make use of FPL-53 ED glass, allowing it to achieve the same stellar quality optical performance while at the same time making it far easier to collimate during assembly. It also features a Vixen style dovetail base for attaching finder or guider brackets.

This stellar quality Apochromatic Astrograph is a splendid choice for any astro-imaging enthusiast, especially the astronomer on the go who will benefit from it's highly portable size! The two elements of FPL-53 ED Glass ensure color free apochromatic performance of the highest quality. It covers 45mm full frame imaging circle, which is quite nice as well. Another factor that makes this a top quality scope is it's included 2.5" Dual Speed Rack and Pinion Focuser, an easy to use and high quality piece of equipment that greatly benefits this scope's performance. Its blazingly fast focal ratio of f/4.9 makes it perfect for imaging, and it comes with a camera adapter to make that more convenient!

The focuser drawtube terminates in a male M48x0.75 thread. This telescope comes with a wide M48 female threded Canon EOS adapter ring. Similar rings are available from other suppliers for other brands of cameras. Note that this a not a conventional 2" focuser tube with locking thumbscrews.

William Optics Part Number: A-STAR71-II
Additional Information

Additional Information

Manufacturer William Optics
Telescope Series William Optics Star
Optical Design Refractor - Apochromatic
Mount Type None - Optical Tube Only
Warranty 1 Year Warranty
Telescope Aperture 71mm
Telescope Focal Length 350mm
Telescope Focal Ratio F/4.9
Focuser Size 2.5"
Focuser Style Rack & Pinion
Manual or Electronic Focusing? Manual
Focusing Speeds Two-Speed
Total Telescope Weight 5.3 lbs
Included Items

Included Items

  • William Optics Star 71 II OTA
  • 2.5" Dual Speed Rack and Pinion Focuser
  • Soft Carry Case
  • Vixen Dovetail
  • Cannon EOS Adapter Ring
Questions & Answers

Product Questions

Does this scope allow use of the WO Binoviewers and if so what accessories may be required? If so, what is the maximum strength of eyepieces that can be used?
Support / Downloads