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Refractor 102 - 105 mm | CFF Telescopes

Refractor 102 - 105 mm

Availability: Product sold-out ; Type: refractor

We began manufacturing the F/6 version in 2013, looking to create a portable refractor, aimed at travelers who seek airline portability with maximum aperture. We warmly recommend it for visual & imaging astronomy, birds & other wildlife observing & imaging, eclipse chasers.
With 102mm aperture, versions with 915 mm or 1050 mm focal length, feature a Strehl ratio > 0.95, from 430 to 700 nm; as such, these will render planetary images with highest color fidelity/resolution, limited only by aperture & local seeing conditions.

Main features:
* 3" or 3.2" rack and pinion type focuser from Starlight Instruments
* 3(three) different focal lengths to choose from; (subject to availability)
* dew shield with rotate & lock feature
* airline travel friendly, being very compact
* Oil-spaced design for best possible light transmission & highest contrast.

Specifications & technical data:
Core glass used – S-FPL55
Clear aperture - 105 mm
Focal length – 630 mm; Focal ratio – F/6 *; (unavailable - sold out)

Core glass used – S-FPL53
Clear aperture - 102mm
Focal length – 730 mm; Focal ratio – F/7*; (not available for ordering yet)
Focal length – 915 mm; Focal ratio – F/9*; (not available for ordering yet)

Focal length – 1050 mm; Focal ratio – F/10*; (not available for ordering yet)
Optical Quality (please click for our optical manufacturing specifications)

Dimensions:
Minimum length – from 495 mm (fully retracted dew shield)*
Back-focus – 180 mm standard or by request, 220 mm
Tube diameter – 114 mm
Dew shield diameter – 135 mm
Weight – from 5.9 kg, including rings*

102mm F/10, with 220mm back-focus, specification:
minimum length of 860mm (dew-shield retracted), a maximum length of 980mm and weighs 6.5kg, including dovetail and a 3D printed handle.

Pricing:
102mm F/7, F/9, F/10 versions = To Be Communicated when product becomes available for ordering. 
FTF2535/2.5” Starlight focuser, 89 mm travel, dual-speed; with finder bracket and dust cap

(Discontinued products)
105mm F/6 version = N/A Euro, includes VAT 23%. Net export price – N/A Euro (non-EU countries)
FTF3035/3″ Starlight focuser, 89 mm travel, dual-speed; with finder bracket and dust cap
105mm F/6 version= 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*

Included items: 
Pair of CNC rings, 1(one) 200mm D-type (Losmandy) or V-type (Vixen) dovetail, padded carrying case.

Mechanical accessories:
Dovetail, D-type (Losmandy) or V-type (Vixen), 200 mm length = 85,00 Euro, including VAT 23%; Net price = 69,00 Euro
Handle, 120 mm, paired with Dovetail = 70,00 Euro, including VAT 23%; Net price = 57,00 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 = our dedicated field corrector for this product is sold out. We recommend using similar products from well-known manufacturers.

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: 38
Number of 105mm F/6 units manufactured/ordered: 36
Number of 102mm F/7 units manufactured/ordered: 0
Number of 102mm F/9 units manufactured/ordered: 0

Number of 102mm F/10 units manufactured/ordered: 2
Delivery time from order (approximative):  to be communicated.
* Overall length and weight depend on focal ratio, back-focus value and focuser;
* 102mm F/7, F/9 & F/10 models are offered exclusively with 2.5” Starlight focuser;

Prices subject to change without notice.

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