Astronomy Specialist

REDCAT 71 F/4.9 APO REFRACTOR

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$2,669.00

Quantity
- +

The new William Optics RedCat 71 is a fast apochromatic quadruplet petzval refractor optimized for widefield astrophotography with a new patented 2-1-1 lens configuration.

With a fast focal ratio of f/4.9 and a focal length of 350mm, the RedCat 71 is perfect for capturing large deep space objects such as the Rosette nebula, the Pleiades, Eta Carina and more. The RedCat also excels as a telephoto wildlife lens.

The unique optical design includes the highest quality FPL-53 synthetic fluorite glass for the best possible colour correction and a flat field across a full-frame sensor with an image circle over 45mm.

 


The RedCat 71 includes a precision helical focuser that can be locked to maintain focus position. The 2GT standard gear ring is more accurate than those found on typical camera lenses.

 

Optical design

Apochromatic petzval (4 elements in 3 groups)

Objective diameter

71 mm

Focal length

348 mm

Focal ratio

f/4.9

Image circle

45 mm

Material

Anodized aluminium alloy

Mount attachment

210 mm Vixen-style / Arca-Swiss dovetail bar

Focuser

Indexed manual helical focuser with 2GT gear ring

Camera connection

M48 x 0.75

Backfocus

TBD

Tube weight

3.7 kg

Tube length

TBD

Tube diameter

TBD

SKU

WO-T-C-71RD

 


 

  • [A] M48 Dust Cap/Thread
  • [B] Tilt Adapter
  • [C] Camera Angle Rotator
  • [D] Rotator Tension Knob
  • [E] Saddle Handlebar (with two M4 thumb screws)
  • [F] Helical Focuser with 2GT Gear Ring
  • [G] Arca Swiss/Vixen Plate
  • [H] Mounting Rings
  • [I] Due Shield with Focus Tension Ring
  • [J] Super Bright Bahtinov Mask
  • [K] Soft Carry Bag

 

ZWO camera software RedCat 71 manual (coming soon)

 

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