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Deep-sky tour challenges for spring

OK, you did the easy items — here are a few to test your observing skills.
Epsilon Boötis In central Boötes lies one of the brightest and most beautiful double stars in the northern sky, but also a difficult one to divide through small instruments. The star is Epsilon (ε) Boötis, which consists of an orange giant of magnitude 2.5 with a close 5th-magnitude companion of contrasting blue color. You'll need a telescope with an aperture of at least 3 inches, high magnification, and some steady air to split them. If at first you don't succeed, try again on a steadie...

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