The Ring Nebula (M57)'s central star, a challenging observational target, was first noted around 1795 by Friedrich von Hahn using a 12-inch reflector, despite being missed by other observers with ...
Fifteen bucks. That’s how much I paid for my first telescope, which I bought secondhand from a high school friend back in 1965. It was an Edmund Scientific Space Conqueror — a Newtonian reflector ...
The sixty-inch reflector which is now being mounted at the Observatory, will when completed, be one of the three largest and most powerful in existence. It will be used for extremely delicate work on ...
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