FSQ-85EDX TUBE ASSEMBLY COMPLETE D-85mm F-450mm F/5.3

FSQ-85EDX TUBE ASSEMBLY COMPLETE D-85mm F-450mm F/5.3

FSQ-85EDX TUBE ASSEMBLY COMPLETE D-85mm F-450mm F/5.3

TAKAHASHI

The FSQ-85EDX is a more mobile version of the FSQ-406EDX4 for lovers of wide-field deep sky imaging.

€4,350.00

Available Upon Request

Available Upon Request

In this case, we do not keep the products in stock but are only available upon pre-order. As soon as we receive your order, we will notify you by e-mail or phone, about the exact delivery time.

Availability: In stock
SKU
TAK-TQE08540


FSQ-85EDX TUBE ASSEMBLY COMPLETE D-85mm F-450mm F/5.3


The FSQ-85EDX is a more mobile version of the FSQ-406EDX4 for lovers of wide-field deep sky imaging.

Like its predecessor, it is based on an apochromatic Petzval quadruplet formula including ED glass. With a focal length of 450 mm and a flat field covering 5.6 degrees over the sky, this refractor is ideal for photography. It is delivered with a 1.01X corrector to make the most of recent sensors with smaller and smaller pixels. The image circle is 44 mm.

The rack-and-pinion focuser is deliberately oversized to improve accuracy and efficiency. It is controlled by a double system of 1/7 ratio wheels and equipped with a CAA (Camera Angle Adjuster) for photographic framing. The retractable dew shield saves space.

A focal reducer is available as an option to transform the telescope into a true high-end 328 mm astronomical telephoto lens, open at 3.9, with a 7 degree field of view on the sky and a 40 mm image circle!

More Information
Net Weight (g) 3600
Optical design Apochromatic Refractor
Aperture (mm) 85
Focal length - F (mm) 450
Focal ratio (f/) 5.3
Mount Not included
Finderscope 6x30
Maximum useful magnification (x) 170

In the box:

Characteristic Takahashi FSQ-85EDX refractor
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
Length of the optical tube 623 mm (535 mm with retracted dew shield)
Diameter of the optical tube 95 mm
Diameter of the dew shield 114 mm
Focuser Rack-and-pinion with 1/7 microfocuser
 
At prime focus
Focal length 450 mm
Focal ratio F/5.3
Metal Back Distance 197.5 mm
 
With 1.01X field corrector
Focal length 455 mm
Focal ratio F/5.4
Image circle diameter 44 mm
Metal Back Distance 56.2 mm
 
With RD QE0.73X focal reducer
Focal length 327 mm
Focal ratio F/3.8
Image circle diameter 44 mm
Metal Back Distance 72.2 mm
 
With EX ED1.5X focal extender
Focal length 680 mm
Focal ratio F/8
Image circle diameter 44 mm
Metal Back Distance 117.5 mm

Spot-diagram of Takahashi FSQ-85EDX refractor with 1.01X field corrector

Spot-diagram of Takahashi FSQ-85EDX refractor with RD QE0.73X focal reducer

Spot-diagram of Takahashi FSQ-85EDX refractor with EX ED1.5X focal extender

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