Skip to content

Explore Scientific 3" Field Flattener .7x Focal Reducer - FFFR507X-00

Save 5%
Original price $449.99
Current price $427.49
SKU FFFR507X-00

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 (excluding our doublet refractors), 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 with a working length of 1.8 mm.

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.

Specs

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

Warranty

Limited USA One Year Warranty when product is registered within 60 days of purchase. Click Here to register.

Customer Reviews

No reviews yet
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
★ Judge.me Reviews

Let customers speak for us

24 reviews
83%
(20)
17%
(4)
0%
(0)
0%
(0)
0%
(0)
r
EAGLE3
r.h.
Great device and excellent service.

This is my first experience with Hyperion. I had quick shipping and good service. The eagle is an excellent device for controlling my telescope and camera. It is a powerful pc.

M
ECCO
M.R.
Really does the job...

For those who have the Eagle, the ECCO is a great device to monitor and adjust the dew heater. It is very easy to install. You do a short calibration in the advanced settings, be sure the sensor is properly placed, plug in the cables and bingo--all done. Highly recommend it.

Great Software

Amazing program, so much you are able to do with it. Very costomizable. Great software support as well, quick replies and helpful. As an amateur astrophotographer it’s pretty easy to learn and the program can grow with you as you dive into the more advanced features.

Successful imaging

I am still learning all the capabilities of Prism, and so far very pleased. I have had several nights so far, after easy setup, of sound sleep waking up to multiple quality subs. I have tried many automation software packages and very happy with Prism.
I asked about some simple issues on initial setup, and customer support was very fast and super friendly.
Give Prism a try.

Nice compact Setup

This is a nice and easy-to-use short focus Newtonian with a very good mounting. A basic knowledge of astronomy is needed to properly use this telescope, as the telescope needs to be colimated to get best results. The mounting needs to be properly oriented to the sky as well.