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William Optics
RedCat 51 APO 250mm f/4.9
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RedCat 51 APO 250mm f/4.9
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Your Price:
$1,054.99
RedCat 51 APO 250mm f/4.9
Part Number:
A-CAT51-R
Availability:
Sold out call for delivery
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T-Ring
Canon 48mm [+$39.99]
Nikon 48mm [+$39.99]
Sony 48mm [+$44.99]
Pentax K-Mount 48mm [+$44.99]
Olympus 4/3 [+$44.99]
Fuji FX 48mm T-Ring [+$64.99]
Visual Accessories
10mm Cateye Eyepeice [+$149.99]
1.25 inch Silver RedCat erecting prism (For RedCat 51 only) [+$159.99]
RedCat Series Saddle Handle Bar [+$64.99]
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Description
Specifications
From the beginning, the goal was to create the best possible design for an affordable, small, lightweight, and fast Apochromatic refactor for astrophotography. The unique optical design includes the highest quality glass for the best possible color correction and flat-field. The result is a 51mm lens in a Petzval design with is matched for the majority of available astronomy camera,s and DSLR's Full frame sensors are fully illuminated.
RedCat 51mm aperture, 250mm focal length, f/4.9 Imaging Apo
Petzval 4-element design using FPL53 and FPL51 glass elements
Weight 1.3kg / 2.9lbs
Tube Length retracted: 210mm
Helical focuser (lock ring included)
Bahtinov mask/cap included
Soft carry case included
Imaging circle size = 45mm
Optional 1.25”Erecting prism available
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