William Optics RedCat 61 APO f/4.9

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Frequently bought with this product:

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About this product

NEW William Optics RedCat 61 / 300mm f/4.9 APO. 

This latest introduction to the popular RedCat family features 61mm Petzval optics, a fast f/4.9 focal ratio, and William Optics' new WIFD dual-speed internal focusing mechanism for zero drawtube flexure.

The fully multicoated Petzval optics include two synthetic fluoride (FPL53 and FPL51) ED glass elements that deliver a full-frame, flat-field image with negligible chromatic aberration.

The new WIFD internal focusing mechanism eliminates flexure on the drawtube and is compatible with the ZWO EAF.

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

Other features include a field rotator, a slot for 48mm filters, a reversible dovetail for either Vixen-style or Arca-Swiss mounting and a Cat Handle with a saddle that accepts 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 Focus Mask
• ​Soft Carry Bag

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