The Fluorostar flagship in Space Gray: 156 mm triplet class
The William Optics Fluorostar 156 Space Gray 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, Space Gray
- Retractable dew shield
- RotoLock 2-inch focuser connection with 1:10 fine adjustment
- Integrated Bahtinov mask
- Losmandy dovetail
- Carrying handle with finder 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
Well: demanding observers and photographers who want the maximum performance from a refractor, on a fixed or semi-fixed mount. Not: those who are looking for exactly the same optics and don't care about the color; the Red version is 200 euros cheaper.
Specifications
| Optical design | Apochromat, FPL-53 triplet with lanthanum glass |
| Opening | 156 mm |
| Focal length | 1217 mm |
| Opening ratio | f/7,8 |
| Connection | RotoLock 2 inch |
| Attachment | Losmandy dovetail with mounting bracket |
| Focus assist | Bahtinov mask |
| Execution | OTA (loose tube), Space Gray |
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.
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