William Optics Fluorostar Refractor
Best high performance triplet for dedicated deep sky astrophotography enthusiasts.
This is a serious instrument for astrophotographers who prioritize optical perfection over portability. By utilizing premium glass and a rock-solid focuser, it eliminates the frustration of chromatic aberration and image shift. You are trading a lightweight setup for uncompromising clarity and the mechanical stability required for long-exposure deep-sky imaging.
$4998.00
Who it's for
- Astrophotographers seeking professional-grade image quality and color accuracy
- Serious hobbyists valuing durable construction and smooth mechanical operation
- Practical observers wanting streamlined setup and easier focusing workflows
Who should skip it
- Mobile astronomers requiring lightweight gear for frequent travel
- Budget-conscious beginners looking for an affordable entry into the hobby
- Users with lightweight mounts unable to support heavy optical tubes
Performance breakdown
Optical Clarity
FPL-53 glass virtually eliminates color fringing for pristine, high-contrast views.
Focuser Stability
The massive 3.7-inch rack-and-pinion handles heavy imaging gear without slippage.
Build Integrity
All-metal CNC construction ensures long-term durability in demanding field conditions.
Portability
Retractable dew shield helps, but the 9kg weight requires a sturdy mount.
Imaging Versatility
Optimized for deep-sky astrophotography while maintaining excellent performance for visual observation.
Focusing Precision
Integrated Bahtinov mask cover makes achieving critical focus quick and effortless.
Key Specs
Aperture
132 mm
Focal Length
925 mm
Focal Ratio
f/7
Optical Design
Triplet, air-spaced, FPL-53 glass
Total Weight
19.8 lbs
Intended Use
Astrophotography
Experience Level
Advanced
Included Accessories
Dew Shield, 3.7" R&P focuser, 3" Roto Lock adapter, Bahtinov mask cover, CNC carry bar, Losmandy style Dovetail plate, Soft carry bag
Tripod Included
No
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