Reducer Full-Frame 61EDPHIII f/4.4

61EDPHIII f/4.4 Sharpstar full-frame gearbox

The 61EDPHIII f/4.4 full-frame reducer is specially designed for use with Sharpstar's 61EDPHIII telescope. This accessory offers focal length reduction while guaranteeing full-frame coverage, ideal for deep-sky astrophotography.

Compatibility and Application

This reducer is perfectly suited to the 61EDPHIII model, reducing the focal ratio to f/4.4 and the focal length to 270 mm, while maintaining optimum field coverage with an image circle of 44 mm, ideal for full-frame sensors.

Technical features and benefits

• Application: Sharpstar 61EDPHIII
• Focal report : f/4.4
• Image circle : 44 mm, ideal for full-frame sensors
• Lens design : Quadruplet with air-spaced structure
• Back-focus : 55 mm (extendable to 75 mm with M54 adapter)
• Coating : Multi-layer over the entire surface for optimum transmission
• Weight : 0.4 kg

Threads and compatibility with accessories

This reducer features an M68x1 thread on one end for connection to the telescope's eyepiece holder, while the other end has an M48x0.75 thread, with an integrated thread for 2" filters. This design allows easy connection to a wide variety of cameras and accessories, offering great versatility for astrophotographers.

In short, the Sharpstar 61EDPHIII f/4.4 full-frame reducer is a must-have choice for serious astrophotographers using the 61EDPHIII telescope, offering high-quality imaging with a configuration optimized for full-frame sensors. It guarantees sharp, vignetting-free images, ideal for capturing deep-sky objects with precision.