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Cyclops Optics

William Optics FLT-132

Discontinued. New version available, see below.

William Optics FLT-132

Discontinued. New version available, see below.
Shipping Weight:
14.00 KGS
Shipping in 10-14 working days

Product Description

NEW 2021 version available here: 

William Optics FLT-132 III Triplet APO with 3.3" R&P Focuser

William Optics FLT-132 2021 with 3.5" Feather Touch & Rotolock

132mm f/7 apochromatic. The FLT-132 gathers 81% more light than the FLT-98 and about 35% higher in resolution.  Fluorostar series (FLT) represents William Optics' top of the line apochromatic designed for astrophotography. FLT-132 is equipped with the heavy duty 3.5" RotoLock focuser to carry heavy imaging train which allows you to exploit the potential of this fluorite triplet even further.


  • FLT-132
  • 3.5" RotoLock Focuser
  • 1.25" adapter
  • Mounting rings (CNC machined too!)
  • High quality soft padded carrying case


  • 132mm f/7 top quality triplet air-spaced objectives aprochromatics
  • Includes 1 FPL-53 fluorite element
  • Designed by A. Strakhov
  • Precision optics with STM coating
  • 3.5" RotoLock focuser suitable for heavy camera
  • Graduated scale for precise camera alignment
  • Very sharp image with great colour correction
  • Designed for astrophotography
  • A dedicated field flattener is available (FLAT68II)
  • CNC out of solid high quality aluminium
  • Powder-painted white CNC-machined aluminum tube, golden finish retractable dew shield and engraved dew shield cap.


Optical system Air-spaced triplets with 1 FPL-53 fluorite element
Aperture 132 mm
Focal length 925 mm
Focal ratio f/7
Image circle

50 mm

Lens shade

Retractable (O.D. 168mm)


3.5" RotoLock Focuser
360º camera rotator with graduated scale
100 mm focuser travel range
1.25" adapter included

1.25" adapter

with anti-marring brass compression ring

Back focus 66-86 mm with Adjustable Flattener Reducer IV
Resolution 0.86 arcseconds
Limiting magnitude 14.5
Light gathering power 196x
Tube diameter

141 mm

OTA length

1040 mm (fully extended)
780 mm (contracted)

Weight 9 kg

Free shipping applies

United States, S. Korea, Japan, Malaysia, Philippines, Singapore, Hong Kong, Taiwan, Indonesia, Australia, New Zealand, Germany, France, Switzerland, Sweden, Denmark, Netherlands, United Kingdoms and others.

Via FedEx International Economy. Arriving in 1-5 working days.


7 days no question asked return if due to material or worksmanship defects

2 years from William Optics

Cyclops Optics Ltd. is an authorised dealer of William Optics' products.

Quality Control

Scratches   Width no more than  0.025 mm
 Total length no more than  1/4 of total lens diameter. No more than 3 individual scratches
 Dots or spots   Diameter, no more than  0.4 mm
 Quantity no more than  3
 Accumulation of defects   Limited area  0.8 mm2
 Total area of scratches and points no more than  5.8 mm2


CNC: Computer Numerical Control. 






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