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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback