, sorry alll , 144444 Sq mm is the area of by combined 100mm binos , thats why I sold my sweet 150mm f/5 refractor at 160000 Sq mm , the differance was seen .
But the 144444 Sq mm of the 100mm binos was far better using both eyes , straight into the brain , via both eyes is a lot .
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Love the science of scope's .
Brian.