William Optics ZenithStar 81mm f/6.9 Doublet Apo with Flat6AIII Field Flattener & Soft Case Package - Z81BU-AP (Specify Blue, Red or Gold)

Article number: A-Z81XX-AP
Availability: Order Now!
Delivery time: More inventory is on it's way - due to arrive in 5-10 days

All New 2019 Super ZenithStar 81 F6.9 imaging APO (Innovative Bahtinov Mask Cover (Patented) included !!)

We are very exciting to announce All New 2019 Super ZenithStar 81 F6.9 imaging APO!!!

Innovative Bahtinov Mask Cover (Patented) included!

This beautiful scope is everything you always wanted in a refractor, starting from extreme sharpness for clear details, and APO color correction. 

It has all the benefits of the ZenithStar family at a price that is truly unbelievable.

William Optics ZS81 Features

F/6.9 FPL53 Doublet air-spaced APO, in CNC machined ultra-high precision lens cell;

F5.5 with x0.8 Flattener.

2.5”R&P Ultra robust focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting! Heavy duty: perfect for your accessories.


Do-all instrument 

Despite its 81mm objective, the scope is still very compact and solid. Many airlines will accept it as carry-on luggage! Perfect size for serious observations of deep sky objects and planets. Solar observations possible with proper additional equipment.

Standard Package:

• Mounting Rings

• New 2019 CNC Carry Handle Bar

• New DuelSide Dovetail plate (DSD 210)

• 2.5” R&P Focuser

• Innovative Bahtinov Mask Cover (Patented)

• Two-year, no fuss warranty and constant customer service!


Optional Accessories:

• M63 -2” Rotolock 

• 1.25” Rotolock 

• New 2019 Guiding Rings


• All New 50mm/F4 Rotolock Guide scope 

• New Full frame x0.8 Flattener 

• Soft Carry Case

Retracted Length:456mm

Tube with Rings and Dovetail Weight:3.50kg

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