Question about Zhumell SuperGiant Astronomical Binocular
They're big, heavy and awkward to use, and the image is over-magnified for the size of the objective giving less than ideal image quality and brightness. A general rule (especially if using for astronomy) is that the objective divided by the magnification should never be less than 5. With 20x80's it's a less than ideal 4 so you'll miss out on many fainter objects completely. They can be excellent for lunar observation though as the Moon is so bright.
The high magnification also makes them almost impossible to hand hold steadily enough unless a tripod (or monopod) is used, adding more bulk and awkwardness.
Posted on Oct 02, 2010
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Posted on Jan 02, 2017
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