Sky-Watcher Reducer/Field Flattener for Esprit
Best precision optical upgrade for dedicated deep sky photographers.
This essential optical accessory transforms a standard triplet refractor into a faster, wider-field imaging machine. By reducing the focal ratio, it significantly cuts down exposure times while ensuring a flat, sharp field of view across the entire sensor, making it a must-have for deep-sky astrophotography.
$525.00
at
Skywatcherusa
Who it's for
- Astrophotographers seeking professional-grade image quality across large sensors
- Deep-sky imagers wanting to maximize efficiency during limited clear nights
- Esprit 120ED owners looking for a reliable, custom-engineered optical solution
Who should skip it
- Novice users who find complex optical spacing calculations challenging
- Budget-conscious hobbyists looking for more affordable universal focal reducers
- Multi-telescope owners who prefer versatile accessories for different optical tubes
Performance breakdown
Imaging Speed
Drastically cuts exposure times, making deep-sky imaging significantly more efficient.
Field Correction
Eliminates edge distortion for crisp, pinpoint stars across the entire frame.
Sensor Versatility
Handles both APS-C and full-frame sensors with impressive optical consistency.
Filter Integration
The built-in cell makes swapping narrowband or light-pollution filters effortless.
Optical Compatibility
Engineered specifically for the Esprit 120ED, ensuring a perfect optical match.
Back-focus Precision
Generous 95mm spacing provides ample room for complex imaging train setups.
Key Specs
Focal Ratio
f/5.4
Reduced Focal Length
647 mm
Native Focal Ratio
f/7
Native Focal Length
840 mm
Back-focus
95 mm
Filter Compatibility
2-inch filter cell
Compatibility
Esprit 120ED Triplet APO Refractor
Warranty
2 Years
Know before you buy
Still have a question?
Ask Metto anything about the Sky-Watcher Reducer/Field Flattener for Esprit before you decide.
