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GlennLeDrew
professor emeritus
Reged: 06/18/08
Posts: 620
Loc: Ottawa, Ontario, Canada
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Re: The "Other" Double-Double in Lyra
06/21/08 10:57 PM
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About a decade ago I stumbled on this one quite by accident. I was trying to sweep up the Ring nebula with a 5" f/5 binocular I built for a buddy, and when this "pair of pairs" drifted into view I had to blink my eyes a bit because I really thought I was starting to see double!
But this duo is a really neat sight due to the similarities; separation, position angle and component brightnesses. In other words, kind of like clones of each other. They're cataloged as Struve 2472 and Struve 2474, if memory serves.
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Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
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