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  1. J

    Christmas gift thread for binoculars - what range is this?

    Hi, I'd probably want sth with 4-5mm exit pupil there due to the light pollution - in darker skies your brother's eyes could probably go to 6 or a bit beyond with full dark adaption. So a good pair of 10x42 or 10x50 would be great. Other things to look for are a nice true field of view - 6 to...
  2. J

    Christmas gift thread for binoculars - what range is this?

    Hi, first of all, roughly how old is your brother and where does he observe (metro area, small city, rural area or dark sky reserve) - this gives us an idea what exit pupil (objective aperture divided by magnification) makes sense. The second question would be whether your brother needs to use...
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