Explore Scientific 3" Field Flattener & .7X Focal Reducer

Explore Scientific 3” Flattener & 0.7X Reducer
for 127 mm & 152 mm Triplet Refractors

When you attach the Explore FFFR507X-00 to your Explore 127 or 152 refractor telescope, it will improve the flatness of the field & reduce the telescope's effective focal ratio by .7X. A flat field translates to sharper, more pinpoint stars out to the furthest reaches of the field of view, and reducing the focal length creates a wider field of view and, when imaging, allows for shorter exposure times. The back focus is 55 mm as measured from the rear flange.

Please note: this 3” Flattener & 0.7X Reducer is recommended for use with Explore Scientific 127 mm and 152 mm triplet refractors. The back focus is 55 mm (as measured from the rear flange), and the included M42x0.75 adapter adds an additional 3 mm. Please ensure your equipment's compatibility before purchasing this product.

The Explore Scientific 3” Field Flattener & .7X Focal Reducer is fully multi-coated for a high level of clarity and brightness, and comes with a M42x0.75 adapter to help you attach your DSLR or CCD camera. If attaching a DSLR, please note that you will still need a T-ring for your camera brand. The extra photo at left shows all of the components…the focal reducer/field flattener body, a 3” nosepiece, and the M42 adapter.

Explore 3” Focal Reducer/Field Flattener Specs

• Diameter: 78.3 mm

• Weight: 1.4 lb.

• Height: 90.1 mm

• Back Focus: 55 mm from rear flange

• Thickness of M42 Adapter: 6.25 mm

Please Note: Explore designed this focal reducer and flattener for their f/8 refractors but testing has proven that it performs nicely with their f/7.5 refractors as well.

Warranty Information:

Limited Warranty is one year, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when product is registered on explorescientific.com within 60 days of purchase.