Takahashi TOA Flattener
Best premium optical accessory for serious deep sky astrophotographers.
This precision-engineered flattener ensures edge-to-edge sharpness across a massive 60mm image circle, making it ideal for high-resolution astrophotography. Its versatile dual-thread design allows for seamless integration with multiple camera setups, providing the flexibility needed for demanding imaging trains.
$670.00
at
Agena AstroProducts
Who it's for
- Astrophotographers seeking professional-grade image quality across large sensors
- Deep-sky imagers using full-frame or medium-format cameras
- Serious hobbyists who value high-end Japanese optical engineering
Who should skip it
- Budget-conscious astronomers looking for more affordable correction options
- Multi-telescope owners wanting a universal field flattener
- Novice imagers who prefer a simple plug-and-play setup
Performance breakdown
Field Correction
Delivers pinpoint star shapes across the entire full-frame sensor area.
Optical Clarity
Multi-coated doublet design preserves contrast and light transmission exceptionally well.
System Compatibility
Dual M54 and M72 interfaces integrate seamlessly with most modern imaging trains.
Build Quality
Precision Japanese engineering ensures long-term durability and mechanical alignment.
Sensor Coverage
The 60mm image circle easily handles large-format sensors without vignetting.
Setup Versatility
Flexible backfocus options accommodate a wide range of camera and accessory configurations.
Key Specs
Type
Field flattener
Reduction Factor
0.99x
Compatibility
Takahashi TOA-130NS and TOA-130NFB
Image Circle
Up to 60 mm
Optical Design
Two fully multi-coated lens elements in two groups
Backfocus Distances
83.7 mm (M72 thread) or 56.2 mm (M54 thread with adapter)
Telescope Side Thread
M72x1 male
Camera Side Threads
M72x1 female or M54x0.75 female
Mechanical Diameter
3.1 inches (78 mm)
Total Length
2.7 inches (70 mm)
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