Refractor 135 mm

Availability: Product sold-out; 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 (2022):
7 257,00 Euro, includes VAT 23%. Net export price – 5 900,00 Euro (non-EU countries)
FTF3545/3.5″ Starlight focuser, 114 mm travel, dual-speed; with finder bracket and dust cap
* This product is sold out *

Included items:
Pair of CNC rings, 1(one) 350mm dovetail - D-type (Losmandy), transport case.

Mechanical accessories:
Dovetail, D-type (Losmandy), 350 mm length, lightweight = 140,00 Euro, including VAT 23%; Net Price = 114,00 Euro
Handle, 300mm length = 85,00 Euro, including VAT 23%; Net Price = 69,00 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.
If the ordered telescope has 220mm back-focus, please consider a 50mm extension for single eyepiece visual use and imaging using a field corrector (no reduction/amplification factor).

Imaging accessories:
Field Corrector = 650,00 Euro, including VAT 23%. Net export price – 528,00 Euro (non-EU countries); Corrected Field = ~55 mm
Electronic focuser control (motor with integrated controller, from Optec) = 660,00 Euro, including VAT 23%; Net price = 537,00 Euro
Adapters and extensions to suit one's observing and/or imaging needs.

Number of units manufactured/ordered: 13

* Prices subject to change without notice.

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