Currency: EUR

William Optics

Redcat 71 APO 350mm f/4.9

2 013,05
Recommended price
2 119,00 €
Estimated delivery time 3-18 days

Product description

Key Features

  • 71mm f/4.9 Astrograph.
  • FPL-53 glass for colour free apochromatic performance.
  • 4 elements in 3 groups (2-1-1- configuration; new, unique, patented design - not a conventional objective/flattener/reducer design).
  • Covers 45mm full frame imaging circle.
  • Precise helical focusing and camera rotation; includes a 48mm make thread that accepts a wide T-ring.
  • Includes mounting rings, 21cm long Red Vixen style dovetail and Cat saddle.
  • Weight = 6.2lbs / 2.8kg (OTA only); 8.2lbs / 3.7kg (OTA with ring, dovetail and saddle).

Welcome Cat71 to join WO Cat family!!!

The WO Cat71 is a 71-mm f/4.9 refractor using a Petzval design with a doublet front element incorporating FPL-53 glass, plus a single central element and a single rear lens. By this design, our WO Cat71 provides a flat image plane without any additional flattener and the image circle is over 45mm. WO Cat71 is designed primarily for imaging, making it an astrograph.

This scope provides an excellent colour correction and pinpoint stars at the very edge of a 45mm image circle.

If you want to take images with the best quality, this beautiful and powerful telescope is what you want.

Four-Element Patented Design 2+1+1

Super Bright Bahtinov mask

Full frame/ APS-C compatible

The premium quality of Anodizing finish and calibrated helical focuser which is much more precise than those on typical camera lenses, and it is lockable, making it easy to nail and maintain focus.

What's in the Box?

[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

Product details

Technical Specifications

  • Lens Type: Petzval Design
  • Focal Length: 350mm
  • Diameter: 71mm
  • Aperture: f/4.9
  • Flattener: Petzval Flat Field
  • Focuser: Helical Focuser with 2GT Gear Ring
  • Color Red
  • Lens Material: FPL-53
  • Strehl Ratio: 0.95+
  • Camera Format: Full Frame DSLR / Mirrorless / CMOS / CCD
  • T-Mounts Supported Canon EF, RF Nikon F, Z Sony E Pentax K Micro Four Thirds (M4/3) FUJI X
  • Tube Length 435mm
  • OTA Weight 2.8kg
  • Total Weight 3.7kg

Shipping costs

15,90 €
European delivery 2-5 days.
PostNord Parcel locker
5,90 €
PostNord Home deliver
19,00 €
Environmentally friendly delivery to your door at the agreed time. Trackable deliveries in real time even in the evenings in the biggest cities. Change your delivery as required.
UPS Standard
14,90 €
Delivery to Europe in 2 to 5 days.
5,90 €
12,90 €















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