Takahashi

FS Series

The FS series is a state-of-the-art doublet fluorite apochromatic refractor. The diffraction-limited apochromatic optics produce crisp, high contrast images free of secondary color over the entire field of view. Seven internal baffles enhance the contrast and produce a very dark background.

The FS series line up includes:

FS-60
FS-78
FS-102
FS-128
FS-152
Click the photos for more detail

 
FS-60
FS-78
FS-102
FS-128
FS-152
Aperture 60mm 78mm 102mm 128mm 152mm
Focal Length 355mm 630mm 820mm 1040mm 1216
Focal Ratio f5.9 f8 f8 f8.1 f8
Resolution 1.95" 1.50" 1.15" 0.91" 0.77"
Limiting Magnitude 10.7 11.2 11.8 12.3 12.7
Photo Field 5.0° 5.1° w/reducer 4.8° w/reducer 3.9° w/reducer 4.1° w/RD-reducer
4.2° w/FT-reducer
Image Circle 44mm w/reducer 42mm w/reducer 50mm w/reducer 49mm w/reducer Ø65mm w/RD-reducer
Ø90mm w/FT-reducer
Reducer Triplet [f4.4] Triplet [f6] Triplet [f5.9] Triplet [f5.9] Triplet [f5.9]
Tube Diameter 80mm 95mm 114mm 145mm 155mm
Tube Length 400mm (15.8") 736mm (29") 930mm (36.6") 1176mm (46.3") 1390mm (54.2")
Weight 1.3kg (2.9lbs) 2.6kg (5.7lbs) 5.3kg (11.7lbs) 7.5kg (16.5lbs) 10.4kg (22.9lbs)
Our Price (OTA)
$839.00
N/A
Replaced by TSA-102 Triplet APO
Replaced by TOA-130 Triplet APO
Replaced by TOA-150 Triplet APO


**Prices listed are for optical tube only

Dovetail Plate For Takahashi
BT Technologies is pleased to offer our newest product to the amateur market - Takahashi dovetail plate that solves most of the inherent problems with current designs and in the process, created something of a true work of art.
New Takahashi TSA-102 4" Triplet APO Refractor
Takahashi 2" Mirror Diagonal with 2" - 1.25" adapter - 10th Wave Mirror
Takahashi's 10-to-1 Micro Edge Focuser offers great precision in an easy-to-install package.  Available for 2.7" and 4" focusers
Pre-order the Particle Wave Technologies Monolith

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