Abstract
The objects in this chapter are visible with medium-sized binoculars, although some are visible in much smaller instruments.Most of the objects to the far south, for example, are easily visible in 8×30 binoculars. With the exception of objects that fill the eyepiece in 10×50 binoculars, all of these objects are better viewed, in the sense that more detail can be seen, in larger instruments. Similarly, many objects in the list for 100-mm binoculars are visible—or at least detectable—in smaller instruments, but often no detail is visible. For example, under good conditions an experienced observer can see the Ring Nebula, M57, in 10×50 binoculars, but it is stellar in appearance.
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Notes
Burnham, R. Burnham’s Celestial Handbook, Vol. 1, New York: Dover Publications, 1978, p. 188.
Levy, D. Observing Variable Stars, Cambridge: Cambridge University Press, 1989, p. 48.
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(2007). 50 Deep Sky Objects for 50mm Binoculars. In: Binocular Astronomy. Patrick Moore’s Practical Astronomy Series. Springer, London. https://doi.org/10.1007/978-1-84628-788-6_9
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DOI: https://doi.org/10.1007/978-1-84628-788-6_9
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