Refractor 160 - 165 mm

Availability: Manufactured on request Type: refractor

160 mm is the ‘entry aperture’ into the ‘big refractor’ world. Such an instrument is capable of delivering a lifetime of enjoyment under the stars.
We deliver it in two packages, one aimed for both visual and imaging work, with 1050 mm focal length, while the 1260 mm focal length we recommend it for those astronomers who enjoy a purely visual experience of planets, double-stars and deep sky objects.
165mm f7.9 limited edition (5 pieces) is an offshoot of the 1260mm focal length unit, boosting a tad more aperture.
Oil-spaced lens design starts to show its advantages in these big sizes, helping the triplet lens to quickly reach ambient temperatures.

Main features:
* 3.2" or 3.5" rack and pinion type focuser from Starlight Instruments
* 2(two) different apertures and focal lengths to choose from (subject to availability)
* dew shield with rotate & lock feature
* bino-viewer friendly design; (longer focal length versions)
* portable, medium to big size refractor
* Oil-spaced design for best possible light transmission & highest contrast.

Specifications & technical data:
Core glass used – S-FPL53 or S-FPL55
Clear aperture – 160 mm
Focal length – 1050 mm; Focal ratio – F/6.5
Focal length – 1260 mm; Focal ratio – F/8
Clear aperture – 165 mm
Focal length – 1260 mm; Focal ratio – F/7.9
(165 mm F/7.9 was a limited series of only 5(five) pieces)
Optical Quality

Dimensions - 160 mm:
Minimum length – from 930 mm (fully retracted dew shield, F/6.5 version)*
Maximum Length – up to 1310 mm (fully extended dew shield, F/8 version)*
Back-focus – 180 mm, F/6.5
Back-focus – 220 mm, F/8
Tube diameter – 165 mm
Dew shield diameter – 185 mm
Weight – 12.5 kg, including rings, for 160mm F/6.5
Weight – 13 kg, including rings, for 160mm F/8.

Dimensions - 165 mm F/7.9:
Minimum length – 1160 mm (fully retracted dew shield)*
Maximum Length – 1340 mm (fully extended dew shield)*
Back-focus – 220 mm
Tube diameter – 169 mm
Dew shield diameter – 199 mm
Weight – 15 kg, including rings, dovetail, handle and caps.

Pricing:
160mm F/6.5 = 10 561,00 Euro net.
FTF3545/3.5″ Starlight focuser, 114 mm travel, dual-speed; with finder bracket and dust cap
* Estimated delivery time: 6 - 10 months from order; only five units available at this price *

160mm F/8 = 10 154,00 Euro net.
FTF3235/3.2″ Starlight focuser, 89 mm travel, dual-speed; with finder bracket and dust cap
* Manufactured based on firm order only with 100% prepayment: estimated delivery to be communicated at the time of ordering *

165mm F/7.9
FTF3235/3.2″ Starlight focuser, 89 mm travel, dual-speed; with finder bracket and dust cap
* No availability - product is sold out*

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

Optional accessories to consider
Mechanical accessories:
Dovetail, D-type (Losmandy), 350 mm length, lightweight
Handle, 300mm length

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
Electronic focuser control (motor with integrated controller, from Optec)
Adapters and extensions to suit one's observing and/or imaging needs.

Number of 160mm units manufactured/ordered: 55
Number of 160mm F/6.5 units manufactured/ordered: 51
Number of 160mm F/8 units manufactured/ordered: 4
Number of 165mm F/7.9 units manufactured/ordered: 5
Delivery time from order (approximative): see above.

* Prices subject to change without notice.

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