William Optics Red Cat71 - RedCat 71 mm f/4.9 Refractor - T-C-71RD Astronomy Books The Sun will look a

The Sun will look a pleasing orange color through the Celestron EclipSmart Solar Filter

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

Optimized Optical Design: Explore 100 Degree Series hyper-wide eyepieces are optimized through each design

Advanced VX features significantly larger base castings than our previous design

a long eye-relief eyepiece

William Optics Red Cat71 - RedCat 71 mm f/4.9 Refractor - T-C-71RD Astronomy Books The Sun will look aHurry, 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,