Explore Scientific Reducer/Corrector 3" 0.7x (47656)

This optical accessory serves as both a field flattener and a focal reducer, significantly improving image quality for astrophotographers. The device addresses two key issues:

1. Field Flattening: It corrects the slight curvature of the field produced by primary optics, ensuring stars remain sharp across the entire image, even at the edges.

2. Focal Length Reduction: It reduces the focal length by a factor of 0.7x (at f/8) and 0.8x (at f/10), allowing for wider field views.

Key Features:

• Originally designed for Explore Scientific 127mm and 152mm ED-APOs, but compatible with many systems

• Installs between the telescope and camera

• Comes with a 3" container for the telescope side

• Includes an adapter for M54x0.75 focuser

• Provides an M42x0.75mm T2 camera adapter

• Includes a dust cap for protection

Technical Details:

• Telescope-side connection: 3"

• Camera-side connection: T2 (M42x0.75mm)

• Focal length reduction: 0.7x

• Free transmission: 65mm

• Internal thread (telescope side): M76x0.75

• External thread (telescope side): M72x0.75 for attaching accessories

Applications:

This flattener/reducer is ideal for astrophotographers looking to improve the overall quality of their wide-field images, particularly when using Explore Scientific APO refractors or similar telescopes. It ensures consistent sharpness across the entire field of view while also providing the option to capture wider scenes.