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William Optics RedCat 71 f4.9 APO Refractor - T-C-71RD
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William Optics RedCat 71 f/4.9 APO Refractor - T-C-71RD

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SKU: WYO-T-C-71RD
$1,698.00
 
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William Optics RedCat 71 f/4.9 APO Astrograph Refractor

This William Optics 71 mm APO Astrograph is a premier tool for astrophotographers. The RedCat 71 provides color-free apochromatic performance. With 4 elements in 3 groups (2-1-1- configuration), the 71 mm RedCat Petzval refractor is designed with a doublet made of FPL-53 glass up front, a single central element, and a single rear lens to provide a flat image plane without any need for an additional flattener.

William Optics designed this refractor with excellent color correction and pinpoint stars, even at the edge of the 45 mm image circle.

Bahtinov Mask

Included with this William Optics RedCat telescope is a Bahtinov focusing mask. The Bahtinov mask is a great tool for astrophotography and modifying focus. With William Optics quality, the Innovative Bahtinov Mask Cover will help astrophotographers reach the best focus when capturing those wonderful celestial photos.

Focuser

There is a calibrated helical focuser included with this APO refractor from William Optics. The focuser comes with a 2GT ring, providing more precise focus than those on typical camera lenses. The helical focuser also has the ability to lock into place so users can reach and maintain focus during astrophotography sessions. The 2GT standard gear ring has 153 teeth, a diameter of 98 mm, and a width of 8 mm. The helical focuser and camera rotation have a 48 mm thread that accepts wide T-rings.

Other Included Accessories

William Optics has included the following accessories:

  • Rotator Tension Knob
  • Tilt Adapter
  • Saddle Handlebar (with two M4 thumb screws)
  • 21 cm Arca Swiss/Vixen Plate
  • Mounting Rings
  • Dew Shield
  • Threaded Dust Cap
  • Focus Tension Ring
  • Soft Carry Bag

OTA Aesthetics

The William Optics RedCat has a premium quality anodized red finish. The OTA also has black accents with white "cat" decals, such as paws on the rings and a cat face on the dust cap.

Please note that the RedCat 71 was designed for astro-imaging and cannot be used visually.

William Optics RedCat 71mm Refractor Technical Features

  • Telescope Series: William Optics RedCat
  • Optical Design: Refractor
  • Refractor Design: Apochromat (APO)
  • Aperture: 2.8" (71 mm)
  • Focal Ratio: f/4.9
  • Focal Length: 348 mm
  • Image Circle: >43 mm
  • Focuser Style: Helical
  • OTA Length: 17.12" (435 mm)
  • OTA Weight: 6.2 lb.
  • OTA Weight with ring, dovetail, and saddle: 8.2 lb.