Skip to content

🚚 Enjoy FREE SHIPPING on orders over $498

Beyond the earth: WILLIAM OPTICS Astrophotography Contest🌌

Explore
CATS
4 Elements Petzval Design
Pleiades
- Pleiades Astrographs
  Pleiades 68
  Pleiades 111
  Pleiades 181
7 Elements APO DESIGN
Gran Turismo
- Gran Turismo Series
  Gran Turismo 81 WIFD
  Gran Turismo 81 IV
  Gran Turismo 71 APO
- GT Bundles
  GT 81 WIFD Astro Imaging Bundle
  GT 81 IV Astro Imaging Bundle
3 Elements APO Design
Zenithstar
- Zenithstar Series
  Zenithstar 61 II APO
  Zenithstar 73 III APO
  Zenithstar 81 WIFD
2 Elements APO Design
Fluorostar
- Fluorostar Series
  Fluorostar 91
  Fluorostar 120
  Fluorostar 132
  Fluorostar 156
- FLT Bundle
  FLT 120 Astro Imaging Package
  FLT 91 Astro Imaging Package
3 Elements APO Design
Guider
- UniGuide
  UniGuide 32mm f/3.75
  UniGuide 50mm f/4.0
  Guiding Scope 50mm f/4.0
- GuideStar
  GuideStar 61
  GS 61 Astro Imaging Package
Accessories
About
- About WO
  WO Value / History
  WO Coffee
- Events
  Astro Photo Contest
Astro Photo Contest
Support

Open search Open cart

Bundles
Refurbished
Used

Cat Series
Pleiades Series
Gran Turismo Series
Zenithstar Series
Fluorostar Series
Guider Series
RC Telescope

Astro Imaging
Visual
Mounting
EQ Mount & Accessories
Tripod & Accessories
More
View All

WO Value / History
WO Coffee
Events

Astro Photo Contest

Contact
Manuals
Discontinued Products
WO Dealers
Shipping Disclaimer
Privacy Policy
Terms of Service

Order Tracking
Return & Refund

Cart

Your cart is empty

Counterweight

SKU: YM-AM3-CW+Screw

Counterweight

Sale price$78.00 USD

Weight: 2kg
Size: Φ83*50mm
Material: Stainless steel

In stock

Share

Counterweight

Counterweight

Sale price$78.00 USD

Telescope

CAT series
Pleiades series
Gran Turismo series
Zenithstar Series
Fluorostar Series
Guider series
RC Telescope
Accessories

Telescope

CAT series
Pleiades series
Gran Turismo series
Zenithstar Series
Fluorostar Series
Guider series
RC Telescope
Accessories

Astro Imaging

EQ Mount & Accessories
Astro Camera

Astro Imaging

EQ Mount & Accessories
Astro Camera

Accessories

Flattener & Reducer
STC Filter
Camera Adapter
RotoLock Adapter
Diagonal & Erecting Prism
Eye Piece
Bahtinov Mask
Mounting
EQ Mount & Accessories
Tripod & Accessories
View All

Accessories

Flattener & Reducer
STC Filter
Camera Adapter
RotoLock Adapter
Diagonal & Erecting Prism
Eye Piece
Bahtinov Mask
Mounting
EQ Mount & Accessories
Tripod & Accessories
View All

About

WO Value / History
WO Coffee
Astro Photo Contest

About

WO Value / History
WO Coffee
Astro Photo Contest

Support

Contact
Manuals
Discontinued Products
Find Dealers
Track Your Order
Shipping Disclaimer
Return & Refund Policy
Privacy Policy
Terms of Service

Support

Contact
Manuals
Discontinued Products
Find Dealers
Track Your Order
Shipping Disclaimer
Return & Refund Policy
Privacy Policy
Terms of Service

Be the first to hear about our promotions, new products and more.

E-mail

Country

Copyright © 1996-2024 WILLIAM OPTICS. All rights reserved.