celestial sphere
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Stars and Proper Motion
Recognize this constellation? Well, at the time stamp of about 2000 AD (CE), I think you will. It’s one of the most famous constellations in the night sky. Well, technically, it’s not a constellation at all. It’s an asterism — a…
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Improved Telescope Mounting
So, any idea what this handy-dandy thing is? Okay, so maybe I sort of gave it away in the post title… I know what you’re about to say next. Why are we looking at a mount? What’s so special about a…
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The Celestial Sphere
When you look up at the night sky on a clear, dark night, it seems as if the stars are glittering like bright thumbtacks on a great canvas above you. (You can get a similar effect — with less light…
