William Optics New FLT156 Triplet APO Refractor - Checked & Tuned

William Optics New FLT156 Triplet APO Refractor - Checked & Tuned

£7,199.00✓ 2 year warranty


Out of stock due 15-20 working days

About this product

Model:  wo_flt_156_rp_gd
Part Number:  A-F156GTGD-RP37

Optical Bench Test

FLO tests all William Optics triplet refractor telescopes before dispatch. 

From the outset, you can be confident your telescope will have well-figured optics, negligible false colour and spherical aberration, and no astigmatism (the bane of any optical system!).

Star shapes will be round, not triangular, oval or egg-shaped!

The William Optics Fluorostar 156 is an apochromatic refractor telescope with a triplet optical design that includes an FPL53 extra-low dispersion glass lens with a matching Lanthanum element for outstanding colour and aberration correction. 

Details and Features

Includes a WO-designed anodised CNC-made Handle Bar. This is compatible with the William Optics Uniguide Guide scope.

The FLT156 features a 3.7" Rack & Pinion Focuser, providing smooth, stable and precise focussing with no image shift. It is compatible with the WO 3" Field Flattener.

Also included is a patented Bhatinov mask that is three times lighter than Bhatinov masks made with conventional materials.

Also included are a trio of beautifully anodised CNC-made tube rings and a Losmandy-compatible mounting plate.

The FLT156 is compatible with the William Optics Flat 6AIII - which provides the best image quality - the Flat 7A 0.8x Reducer/Flattener and the Flat-8 0.72x Reducer/Flattener.


Focal Length: 1217mm

Aperture: 156mm

Focuser: 3.7" Rack and Pinion

Image Circle: Full Frame

Tube Length Fully Retracted: 1120mm

Tube Length Fully Extended: 1330mm

Tube Weight: 17kg

The FLT156, in common with William Optics FLT132 and GT Triplets, uses a high-quality steel lens cell that is less prone to thermal movement and lens pinching in low temperatures. Nevertheless, we recommend storing the telescope in a dry place with consistent room temperature when not in use.


What's in the box

  • FLT156 Optical Tube
  • Patented Bhatinov Mask
  • CNC Tube Rings
  • CNC Losmandy Style Mounting Plate

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