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The Askar 2.5" F/3.9 Full Frame Reducer is a specialized optical accessory designed to enhance the imaging capabilities of the Askar FRA400 and FRA500 telescopes. This focal reducer decreases the telescope's focal ratio to f/3.9, allowing for faster exposures and a wider field of view while maintaining excellent image quality across full-frame sensors.
Specifically designed for use with Askar FRA400 and FRA500 telescopes. Ensure compatibility with your camera sensor size before purchase.
Optical Performance
The 2.5" F/3.9 Full Frame Reducer features high-quality optics designed to maintain sharp, well-corrected images across the entire field of view, even with full-frame sensors. It effectively reduces the focal length of the FRA400 and FRA500 telescopes while minimizing optical aberrations, ensuring excellent image quality for astrophotography.
Enhanced Imaging Capabilities
By reducing the focal ratio to f/3.9, this reducer allows for significantly faster exposures, making it easier to capture faint deep-sky objects. The wider field of view also enables imaging of larger celestial targets, expanding the range of objects that can be photographed with the FRA400 and FRA500 telescopes.
Full-Frame Optimization
Specifically designed to cover full-frame sensors, this reducer ensures edge-to-edge sharpness and minimal vignetting across the entire image field. This makes it an ideal choice for astrophotographers using full-frame DSLR or mirrorless cameras, as well as large-format astronomical CCD cameras.
Construction Quality
Built with high-quality materials and precision-engineered optics, the reducer is designed to withstand the rigors of frequent use and maintain its optical alignment. The robust construction ensures consistent performance over time, making it a reliable addition to your astrophotography kit.
Easy Integration
The 2.5" format ensures easy integration with the Askar FRA400 and FRA500 telescopes and compatibility with standard astronomy equipment. The reducer is designed for straightforward installation and removal, allowing for flexible use based on your imaging needs.
Versatility
While optimized for full-frame sensors, this reducer can also be used with smaller sensor sizes, offering even wider fields of view. This versatility makes it suitable for a range of astrophotography projects, from wide-field Milky Way shots to detailed images of large nebulae and galaxies.
Technical Specifications
- Reduction factor: Reduces focal ratio to f/3.9
- Diameter: 2.5 inches (63.5mm)
- Optimized for: Full-frame sensors
- Compatible with: Askar FRA400 and FRA500 telescopes
- Backfocus: Refer to manufacturer specifications for optimal camera spacing
