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FSQ-106EDX4

Astrophotographers see the FSQ-106EDX4 as one of the best astrographs available for amateur astronomers.

Available configurations

FSQ-106EDX4 refractor

Reference : [TQE10640]
[TKP38003] - Coupling (TW) n°8 (FSQ-106EDX4)
[TKA00552] - Finder 7x50
[TKA00563] - Finder bracket for 7x50 finder
[TKA29420S] - Cradle 125S with balancing plate
[TQE10641] - FSQ-106EDX4 refractor OTA

FSQ-106EDX4 refractor OTA

Reference : [TQE10641]
[TKP38003] - Coupling (TW) n°8 (FSQ-106EDX4)

Astrophotographers see the FSQ-106EDX4 as one of the best astrographs available for amateur astronomers. With a focal length of 530 mm, an image circle of 88 mm and a field of view of 9.5°, it acts as a telephoto lens for the most powerful CCD cameras and digital cameras on the market.

Based on a Quadruplet Petzval optical formula including ED glass, the FSQ-106EDX4 is optimized for wide-field imaging of the deep sky. It has a native flat field, a camera angle adjuster (CAA) and an oversized rack-and-pinion focuser with 1/7 microfocuser. To minimize space requirements, it is equipped with a retractable dew shield.

Two focal reducers (0.73x and 0.6x) are available as options.

Specifications

Optical specifications
Objective Petzval Quadruplet with ED glass
Lens cell Highly air-spaced quadruplet. 4 lenses/4 groups. 2 x S-FPL53 ED lenses
Coatings Hard multicoatings
Diameter 106 mm
At prime focus
Focal length 530 mm
Focal ratio F/5
Metal Back Distance 178 mm
With focal reducer RD-QE0.73X
Focal length 385 mm
Focal ratio F/3.6
Image circle diameter 44 mm
Metal Back Distance 72.2 mm
With focal reducer 645 RD QE0.72X
Focal length 380 mm
Focal ratio F/3.6
Image Circle Diameter 60 mm
Metal Back Distance 56.2 mm
With focal reducer F3 RD 0.6X
Focal length 320 mm
Focal ratio F/3
Image Circle Diameter 44 mm
Metal Back Distance 56.2 mm
With Extender EX-Q1.6X
Focal length 850 mm
Focal ratio F/8
Image circle diameter 44 mm
Metal Back Distance 117.5 mm
Mechanical specifications
Length of the optical tube 675 mm (580 mm with retracted dew shield)
Diameter of the optical tube 125 mm
Weight 7.0 kg
Focuser Rack-and-pinion with 1/7 microfocuser

Spot diagrams

FSQ-106ED at prime focus

Spot-diagram of the Takahashi FSQ-106ED refractor et prime focus

FSQ-106ED with RD QE0.73X focal reducer

Spot-diagram of the Takahashi FSQ-106ED refractor with focal reducer RD QE0.73X

FSQ-106ED with 645 RD QE0.72X focal reducer

Spot-diagram of the Takahashi FSQ-106ED refractor with focal reducer 645 RD QE0.72X

FSQ-106ED with F3 RD 0.6X focal reducer

Spot-diagram of the Takahashi FSQ-106ED refractor with focal reducer F3 RD 0.6X

FSQ-106ED with EX Q1.6X extender

Spot-diagram of the Takahashi FSQ-106ED refractor with extender EX Q1.6X

System-charts

FSQ-106EDX4 main system-chart Download  
FSQ-106EDX4 system-chart with Extender-ED 1.6X Download  

Instruction manuals

FSQ-106ED instruction manual Download  
Appendix for FSQ-106EDX4 version Download  
FSQ-106EDX4 refractor
FSQ-106EDX4 refractor
FSQ-106EDX4 refractor OTA
FSQ-106EDX4 refractor OTA