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William Optics GT102 Twenty years Anniversary APO Triplet Refractor Telescope

William Optics GT102 Twenty years Anniversary APO Triplet Refractor Telescope
Price:  £2,449.00
List Price:  £2,599.00
(Inc. 20% VAT)

Product Code:  A-F102GTSG-VP20A
Manufacturer:  William Optics
Telescope Type:  APO Triplet Refractor
Aperture (mm):  102 mm

William Optics

Soft carry bag included!

The new 2018 GT102 three-element super APO Anniversary offer superb quality for imaging and visual use at an affordable price.

Package includes:

  • GT102 three element design with center FPL-53 and other ED element glass (air spaced)
  • Mounting rings
  • Innovative Bahtinov Mask Cover (Patented)
  • CNC carry Handel
  • Guiding rings
  • Retractable dew shield with lock screw
  • All-new 3" Victory Edition Diamond Crayford design (Zero image shift)
  • 2 speed knobs 1:10
  • Aperture: 102mm F6.9
  • Free vixen style dovetail plate
  • Weight: 11 lb
  • Length: 27"

Attention to detail

  • Highly precise CNC machined lens cell.
  • Triple testing each lens by Zygo test to ensure the best optical quality.

GT-102 Back focus:



Focal Ratio


Focal Length


Objective designed

3 elements Air-spaced with FPL53 glass

Resolving Power

1.13 arc "

Limiting Magnitude


Image Circle

Full Frame

Lens Shade



OD 3" Victory Ed. Crayford focuser ,360“_ Rotating Camera-angle Adjuster
1.25" Adapter Included

1.25" Adapter

Brass Compression Rings

Tube Diameter


Mounting Rings


Tube Length

27" (689mm) Fully Retracted

Tube Weight

11 lbs. (5.0kg)


High Quality Soft Case (Optional accessory)

Case Dimensions

31" x 10" x 13 "

(W x H x D)

(78cm x 25m x 34cm)

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