Brand: SharpStar

Askar 2.5" F/3.9 Full Frame Reducer for FRA400 (RFRA400/ASKAR7256RD)

ASKAR7256RD

Brand: SharpStar

Askar 2.5" F/3.9 Full Frame Reducer for FRA400 (RFRA400/ASKAR7256RD)

ASKAR7256RD

$241.00 USD

Easy Payment Options with .

$241.00 USD

Easy Payment Options with .

Free Expert Support
Stress Free, Secure Shopping
30 Day Return Policy
Price Match Promise
Full Details Reviews and Questions

Product Description

Askar provides a brand-new F/3.9 full frame reducer for FRA400 astrograph, further reducing the focal length and thus shortening the exposure time on its original 400 focal length and f/5.6 focal ratio design basis. The reduction factor is 0.7×, and the reduced focal length is 280mm, which can satisfy most deep-sky astrophotography. The back focus is standard 55mm. The reducer has built-in M48×0.75 thread, allowing for the attachment of 2" filters.

This reducer also works with the FRA500

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
H
Hector

The optic is performing as expected

Why Should You Trust All Star Telescope?

We've Made All The Mistakes
So You Don't Have To

Learn More