3" Field Flattener .7x Focal Reducer (FFFR507X-00)
3" Field Flattener .7x Focal Reducer (FFFR507X-00)

Explore Scientific

3" Field Flattener .7x Focal Reducer (FFFR507X-00)

Regular price
$ 479.99
Sale price
$ 479.99
Unit price
per 

This item is out of stock but you can place an order now and we’ll ship when it becomes available.

Description

Explore Scientific’s 3-inch Field Flattener/0.7x Focal Reducer is a multi-faceted accessory designed to enhance your astrophotography experiences. As a field flattener, this piece addresses the edge-of-field aberrations caused by curved focal planes to ensure your night at the eyepiece will result in crisp, true images.

As a focal reducer, this device will reduce your f-ratio by 0.7, which results in a wider field of view, brighter images and less exposure time. Recommended for our 127mm and 152mm refracting telescopes, this field flattener/focal reducer boasts fully multi-coated optics and comes with 1 adapter.

The field flattener/focal reducer offers 55 mm of back focus from the rear flange. The M42x0.75 adapter is 6.25 mm thick.

While technically this was designed for the F/8 system, through user experiences and our subsequent testing we have concluded that our 3-inch field flattener/reducer performs very well with our F/7.5 refractors.

Specifications

Item Number FFFR507X-00
Weight 1.4lb; .64kg
Diameter 78.3mm
Height 90.1mm


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