C Series Telescope Reducer Flattener

Buy on Amazon
This reducer and field flattener is designed specifically for C Series telescopes, correcting optical aberrations and reducing focal length to deliver flatter, sharper images across the full field of view. It serves a dual purpose by both flattening the image plane and providing a focal reduction, making it a practical two-in-one accessory for visual and imaging users. Overall, it offers a cost-effective solution for astrophotographers looking to improve edge-of-field sharpness without investing in a separate flattener and reducer.
Key Features & Specs
| Compatibility | Designed specifically for C Series telescopes (e.g., Celestron C5, C6, C8, C9.25, C11) |
|---|---|
| Function | Combines focal reduction with field flattening to correct curvature and coma at image edges |
| Focal Reduction | Provides minus focal length correction, effectively reducing the focal ratio for wider fields of view |
| Optical Design | Multi-element corrector optics with anti-reflection coatings to minimize light loss and ghosting |
| Connection | Standard threaded fitting compatible with common C Series rear-cell threading |
| Material | Metal barrel construction for durability and stable optical alignment during use |
| Use Case | Suitable for both visual observation and astrophotography with DSLR or dedicated astronomy cameras |
Best for: Amateur and intermediate astrophotographers using C Series telescopes who want sharper, flatter images across the full sensor or eyepiece field without purchasing separate optical correction accessories.