William Optics RedCat 71 WIFD APO f/4.9
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William Optics RedCat 71 WIFD APO f/4.9William Optics RedCat 71 WIFD APO f/4.9William Optics RedCat 71 WIFD APO f/4.9
William Optics RedCat 71 WIFD APO f/4.9William Optics RedCat 71 WIFD APO f/4.9William Optics RedCat 71 WIFD APO f/4.9

William Optics RedCat 71 WIFD APO f/4.9

£1,798.00✓ 2 year warranty

:  

2x in stock shipped 1-2 working days

Steve Ringwood writing for Astronomy Now Magazine.

"The RedCat71 comfortably demonstrated its abilities as an astrograph, and in the hands of those more able than I it is clearly capable of incredible astrophotography, especially wide-field imaging to which its focal length is suited.

The large tactile helical focuser is a nod towards making it useful as a terrestrial telephoto too, so those who love to capture candid shots of wildlife get an extra bonus. I thoroughly enjoyed my time using this excellent instrument."  

About this product

Model:  wo_redcat_71_WIFD
Part Number:  T-C-71RDII

William Optics RedCat 71 WIFD APO f/4.9

This latest version of the Redcat 71 features the same tried-and-tested optics as previous versions, so it provides high-resolution images when used for astrophotography or wildlife photography. 

Its fast f/4.9 focal ratio and compact size make it ideal for convenient wide-field astrophotography, and the WIFD (William Optics Internal Focuser Design) is integrated inside the main tube assembly, so no focuser drawtube movement is visible from the outside. 

One of the most significant benefits of the WIFD is that you can add several heavy accessories to your imaging train, such as a large filter wheel or rotator, without worrying about sag from the telescope focuser drawtube and the resultant tilt of the sensor with reference to the optical axis.

 

 

Designed primarily for astrophotography, the RedCat 71 provides a flat image plane (without needing an additional flattener), an image circle over 45mm, excellent colour correction and pinpoint stars. 

 

 

 

What's in the box

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

Specifications

Lens Type 4 Element Petzval Design
Focal Length 350mm
Diameter 71mm
F/Ratio F4.9
Image Circle 48mm FF
Flattener No Flattener Required
Focuser

WIFD (WO Internal Focus Design)Compatible with EAF

Focus Travel 0-35mm (Ruler to 40mm)
Lens Material FPL-53
Camera Format Full Frame,DSLR,Mirrorless,CMOS,CCD
T- Mounts Supported Canon EF/RF, Nikon F/Z,Sony E,Pentax K,MTF (M4/3),Fuji X
Tube Length 427mm
Total Weight 7.1lbs/3.2kg

 

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