Bino-refractors

Availability: manufactured on request; Type: refractor

These are our first products designed for using our eyes in a natural way. Built around two single optical tube assemblies, shortened to accommodate the 3-inch fusion image system, made in Japan (Matsumoto – EMS).
By using the maximum practical aperture for the focusers and EMS system, the bino will allow using 2″ eyepieces without any vignetting of the light cone.
It has the light gathering power of a 190-mm unobstructed objective while the use of our eyes in a natural way increases perceived resolution. Highly recommended for visual astronomy.

Main features:
* 3.2" or 3.5" rack and pinion type focuser from Starlight Instruments;
* dew shield with rotate & lock feature;
* portable, medium size refractor bino-telescope;
* EMS - UXL fusion image system;
* Oil-spaced design for best possible light transmission & highest contrast.

Specifications & technical data:
Core glass used – S-FPL53 or S-FPL55;
BR - 135mm: Clear aperture – 135 mm; Focal length – 910 mm; Focal ratio – F/6.7;
Light gathering capability equivalence – 190 mm aperture;
BR - 160mm: Clear aperture – 160 mm; Focal length – 1050 mm; Focal ratio – F/6.5;
Light gathering capability equivalence – 226 mm aperture;
Only a limited number of pieces will be available.
Back-focus distance with EMS = ~55 mm;
Back-focus distance without EMS = ~250 mm;
BR-135: weight - 21 kg;
BR-160: weight - 25 kg;
Optical Quality (please click for our optical manufacturing specifications)

Pricing (last updated in 2018):
BR - 135mm
N/A Euro, includes VAT 23%. Net export price – N/A Euro (non-EU countries);
FTF3235/3.2″ Starlight focuser, 89 mm travel, dual-speed; with finder bracket and dust cap;
*Product sold out*

BR - 160mm
24 750,00 Euro, includes VAT 23%. Net export price – 20 122,00 Euro (non-EU countries);
FTF3545/3.5″ Starlight focuser, 114mm travel, dual-speed; with finder bracket and dust cap;
* Above prices to be modified starting with 2022. No new orders accepted. *

Included items:
CNC hinged ring type cradle, D-type dovetail, handle.

Visual accessories:
A pair of good quality eyepieces, to be able to extract the most of your new bino-refractor telescope.

BR-135mm and BR-160mm are manufactured to order, only.
Delivery time from order: to be communicated when ordering.

* Prices subject to change without notice.

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