Celestron Skymaps and Planisphere filter wheel try installing both a red

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

The Nikon T ring fits 99% of  Nikon DSLR cameras including the following:

More information on the meteorite St Louis can be found here -

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

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

Celestron Skymaps and Planisphere filter wheel try installing both a redLearn 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