Sky-Watcher Reducer / Corrector for EvoStar ED
Best focal reducer for astrophotographers seeking wider, sharper deep-sky images.
This dedicated reducer and corrector shortens the focal length of your refractor, effectively widening your field of view for deep-sky imaging. It ensures edge-to-edge sharpness, making it a critical upgrade for capturing high-quality astrophotography.
$380.00
More Focal Reducer/Corrector options
Who it's for
- Astrophotographers needing shorter exposure times for deep-sky imaging
- Photographers seeking edge-to-edge sharpness across their entire frame
- EvoStar 100 ED owners wanting guaranteed, hassle-free optical compatibility
Who should skip it
- Budget-conscious hobbyists prioritizing telescope affordability over advanced accessories
- Beginners intimidated by precise back-focus spacing and adapter requirements
- Full-frame sensor users concerned about potential corner light falloff
Performance breakdown
Edge-to-Edge Sharpness
Corrects field curvature effectively for crisp stars across the entire frame.
Focal Reduction Efficiency
The 0.85x factor provides a noticeable, clean boost to field width.
Build Integrity
Solid construction ensures the optical train remains stable during long exposures.
Integration Ease
Threads smoothly onto compatible refractors without requiring complex mechanical adjustments.
Light Transmission
High-quality glass coatings maintain excellent contrast for deep-sky imaging sessions.
System Compatibility
Highly specialized design limits use to specific EvoStar telescope models.
Key Specs
Compatibility
Evostar 100 ED Apochromat
Focal Reduction Factor
0.85x
Back Focus
55mm
Thread Type
M48
Resulting Focal Ratio
f/7.56
Warranty
1 Year
Material
Glass
Accessory Type
Adapter
Telescope Compatibility
Refractor
Know before you buy
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Ask Metto anything about the Sky-Watcher Reducer / Corrector for EvoStar ED before you decide.