William Optics Fluorostar 156/1217 Refractor APO Red OTA

The Fluorostar flagship in classic red: 156mm triplet class

The William Optics Fluorostar 156 Red The Fluorostar is the largest: a 156mm triplet of FPL-53 and lanthanum glass that shows stars as perfect points. Double stars are tightly separated and Jupiter and Saturn reveal details as if you were close, both visually and in photos.

Wide opening, long focal length

With a 156 mm aperture and 1217 mm focal length (f/7.8), this tube combines deep deep-sky reach with the imaging scale for serious planetary work. The RotoLock adapter clamps the diagonal or camera train securely without tilting, and the Bahtinov mask ensures exact focusing. Expect a sturdy equatorial mount in the EQ6 class or higher.

In the box

• Optical tube Fluorostar 156/1217 triplet, red version
• RotoLock adapter
• Bahtinov mask
• Losmandy-style dovetail
• Mounting bracket with accessory shoe

Featured accessories

A William Optics UniGuide 50mm Guidescope (from 189 euros) fits directly into the accessory shoe; for full-frame photography, we recommend the matching William Optics flattener for the FLT156.

For whom yes, for whom no

Suitable for: demanding observers and photographers who want the most out of a refractor, on a fixed or semi-permanent setup. Not suitable for: those who want to work mobile; the weight and the required EQ6-class mount make this an instrument for a permanent location.

Specifications

Unsure about the right tube for your camera and mount? The telescope selection aid helps you choose. Also view all Refracting telescopes and the full range of William Optics.