Celestron Skymaps and Planisphere filter wheel and actually fine optically polished

and actually fine optically polished flat to within 1/4 wave p-v over the entire surface

superior multi-layer coatings and edge-blackened elements deliver superb high contrast images

SF1050 - 10 1/8" - 10 3/8" (257mm - 264mm)

try installing both a red dot and optical finder on your telescope

Celestron Skymaps and Planisphere filter wheel and actually fine optically polishedLearn the night skies of the Northern Hemisphere with Celestron Sky Maps! This classic collection of seasonal star charts, topped off by a glow in the dark luminous star finder, or planisphere, has been around for years and years! It continues to be so popular because beginning stargazers as well as seasoned amateur astronomers find that this book provides most everything they need to find constellations quickly and delve into seasonal night sky