Refractor 135 mm

Availability: manufactured on request; Type: refractor

Due to increased demand of our limited edition 132mm refractor, we have introduced another series, based on our original optical design.
Highly portable optical tube assembly, based on the same focal length as our 140 mm F/6.5, with a slightly slower focal ratio due to its smaller aperture.
We recommended it for visual astronomy and photographic use when used in pair with our dedicated Field Corrector.

Main features:
* 3.5" rack and pinion type focuser from Starlight Instruments;
* dew shield with rotate & lock feature;
* highly portable, medium size refractor;
* Oil-spaced design for best possible light transmission & highest contrast.

Specifications & technical data:
Core glass used – S-FPL53;
Clear aperture – 135 mm;
Focal length – 915 mm;
Focal ratio – F/6.7;
Only a limited number is available in single OTA or bino-telescope configuration.
Optical Quality (please click for our optical manufacturing specifications)

Dimensions:
Minimum length –  780 mm;
Maximum length – 990 mm;
Back-focus – 180 mm;
Tube diameter – 145 mm;
Dew shield diameter – 164 mm;
Weight – 10 kg, including rings.

Pricing (2019):
6519 Euro, includes VAT 23%. Net export price – 5300 Euro (non EU countries);
FTF3545/3.5″ Starlight focuser, 114 mm travel, dual-speed; with finder bracket and dust cap;

Included items:
CNC rings, D-type or V-type dovetail, transport case.

Mechanical accessories:
Dovetail, Losmandy Type, 350 mm length, lightweight = 140 Euro, including VAT 23%; Net Price = 114 Euro;
Handle, 300mm length = 85 Euro, including VAT 23%; Net Price = 69 Euro.

Visual accessories:
A prism or mirror diagonal will be needed, together with good quality eyepieces, to be able to extract the most of your new telescope.

Imaging accessories:
Field Corrector = 650 Euro, includes VAT 23%. Net export price – 528 Euro (non EU countries); Corrected Field = 55 mm;
Adapters and extensions to suit one's observing and/or imaging needs.

Number of units manufactured/ordered: 6
Units still available for ordering: 6
Availability/delivery time: ~9 months. 
Prices subject to change without notice.

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