Celestron Skymaps and Planisphere filter wheel More information on the meteorite

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

black rubber armouring

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

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

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

Celestron Skymaps and Planisphere filter wheel More information on the meteoriteLearn 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