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Advanced VX features significantly larger base castings than our previous design
5 degree field of view is great for watching concerts or sporting matches as well as outdoor activities during the day like bird or nature watching
even at high magnifications or when using the filter far ahead of the focal plane (ie
Dimensions: 26
or counter-clockwise to release the accessory
William Optics Red Cat71 - RedCat 71 mm f/4.9 Refractor - T-C-71RD Astronomy Books Advanced VX features significantly largerHurry, just one left at an amazing price! The William Optics RedCat refractor continues to be immensely popular, but if you'd like more aperture, check out the 71 mm f 4. 9 RedCat! This beautifully designed Petzval astrograph sports four optical elements in a three group configuration (2 1 1). The doublet front group is made of FPL 53 glass, followed by one central element and a rear lens. This optical design produces a flat image plane on its own,
