William Optics RedCat 61 APO f/4.9
William Optics RedCat 61 APO f/4.9William Optics RedCat 61 APO f/4.9William Optics RedCat 61 APO f/4.9

William Optics RedCat 61 APO f/4.9

£1,629.00✓ 2 year warranty


2x in stock shipped 1-2 working days
Special Offer:  A free William Optics 32mm Slide-base Uniguide Scope is available when you order 1 item or more of selected products.

About this product

Model:  wo_redcat_61
Part Number:  T-C-61RD

Now includes FREE 32mm Slide-base Uniguide Scope

Limited time offer - while stock lasts. 

NEW William Optics RedCat 61 / 300mm f/4.9 Apo

This latest introduction to the popular RedCat family features a 61mm Petzval design and a fast focal ratio of F4.9.

The William Optics RedCat 61 APO is a 61mm f/4.9 Petzval refractor with synthetic fluoride (FPL53 and FPL51) glass elements for a full-frame, flat field image.

Provides high-resolution images when used for astrophotography or wildlife photography and features William Optics brand new WIFD internal focusing mechanism for zero flexure on the drawtube.

Even better, the focuser is compatible with the ZWO EAF.

With a  fast f/4.9 focal ratio and compact size, the RedCat 61 is ideal for convenient wide-field astrophotography or piggybacking. 

It incorporates a field rotator graduated by degree, a slot for 48mm filters and a reversible dovetail for either Vixen style* or Arca-Swiss mounting. 

Features standard Cat Handle for mounting one of William Optics Uniguide/Slide Base Guidescopes.


What's in the box

  • M48 Dust Cap/Thread
  • Tilt Adapter
  • Camera Angle Rotator
  • Rotator Tension Knob
  • Saddle Handlebar (with two M4 thumb screws)
  • Helical Focuser with 2GT Gear Ring
  • Arca Swiss/Vixen Plate
  • Mounting Rings
  • Dew Shield with Focus Tension Ring
  • Super Bright Bahtinov Mask
  • ​Soft Carry Bag


Aperture 61mm
Focal Length 300mm
Focal Ratio F/4.9
Image Circle Full Frame
Focuser WIFD/Internal Focus Design
Tube Length 365mm
Dew Shield Diameter 92mm
Weight Bare OTA 2.465kg/5.43 lbs
Weight with Rings,Dovetail,Saddle 3.39kg/7.47 lbs
Warranty 2 years



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