Pleiades 181
Pleiades 181
Pleiades 181
Pleiades 181
Pleiades 181

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William Optics

Pleiades 181

Regular price
$ 17,998.00
Sale price
$ 17,998.00
Unit price

This item is a Special Order from the Manufacturer

Special Order

Introducing the William Optics Pleiades 181 – The Ultimate Imaging Telescope for Medium Format Astrophotography

Elevate your stargazing and astrophotography experience with the newly launched Pleiades 181 by William Optics, a masterpiece exclusively designed for imaging with medium format cameras. This state-of-the-art telescope boasts a substantial 181mm diameter and a 998mm focal length, encapsulated in a sleek, robust design with a 3.7” R&P focuser for precise control.

Key Features:

  • High-Performance Optics: The Pleiades 181 features a seven-element, temperature-compensated lens system, ensuring minimal thermal distortion and a Strehl ratio minimum of 0.96 for sharp, clear images across a greater than 55mm image circle.
  • Designed for Medium Format Cameras: Engineered specifically for medium format imaging, the Pleiades 181 is versatile in accommodating a variety of cameras. It comes equipped with three adapters for cameras with 48mm, 54mm, and 68mm threads, ensuring seamless compatibility and expansive celestial scene capture with unmatched clarity and color accuracy. This makes it an ideal choice for serious astrophotographers.
  • Unique Cosmos Steering Wheel: A pioneering addition, the Cosmos Steering Wheel allows for effortless handling, rotating, and precise positioning of the telescope, enhancing both comfort and functional ease during prolonged observation sessions.
  • Durable and Portable: Despite its large aperture, the Pleiades 181 remains relatively portable with a weight of 33.07 lbs (OTA only) and 41.23 lbs fully equipped with ring, dovetail, and saddle. The retracted and extended lengths are 1231mm and 1496mm respectively, with a dew shield diameter of φ230mm.

Why Choose Pleiades 181?

Designed with the specific needs of advanced astrophotographers in mind, the Pleiades 181 is not just a telescope, but a dedicated imaging gateway to exploring the cosmos with exceptional detail and depth. Whether you are capturing distant galaxies or the intricate patterns of nebulae, the Pleiades 181 brings the universe closer to you with unparalleled precision.

Explore the heavens with precision and elegance with the new Pleiades 181 from William Optics, where innovation meets the art of celestial imaging.


  • Lens Type: 7 Elements Astrograph Design (Contain 3 Super ED)
  • Focal Length: 998mm
  • Diameter: 181mm
  • Aperture: f/5.5
  • Image circle: 55mm
  • Flattener: No flattener required
  • Adapters: N/A
  • Lens Material: FPL-53
  • Camera format: >full frame
  • T-mounts supported: Canon EF/RF, Nikon F/Z, Sony E, Pentax K, Micro 4/3rds, FUJI X
  • Tube length: 1231mm
  • Extended Tube Length: 1496mm
  • OTA weight: 15 kg / 33.07 lbs
  • Total weight: 18.7 kg / 41.23 lbs

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