I bought this toy scope from Borders that used 2 plastic elements and was supposed to be the same mag (x3) used by Galileo when he first pointed his at Jupiter. Not too great I might add. Cost around S$30 but at least the kids have a kick making the scope (they did some colouring and stuff). This is the exact one here :
http://www.astrosociety.org/cgi-local/S ... 1146015274
But look at this one ....my goodness. US$60+ for a few pieces of plastic objectives and cardboard tubes! Best of all, no details whatsoever ec.
If I read correctly, this is supposed to have a mag of up to x22...
http://www.astrosociety.org/cgi-local/S ... 1145971423
Children DIY kit
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Airconvent
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Children DIY kit
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United Federation of the Planets
Captain, RSS Enterprise NCC1701R
United Federation of the Planets
I think the $60 deal is better, at least you get 10 scopes, which works out to $6 per scope! Plastic or not, I don't think it makes any difference... Heh
Come to think of it, you can make 5 bino-telescopes out of this, or link them up into a huge telescope of 43mmx10 = 430mm or 17 inch refractor! Just kidding..
Come to think of it, you can make 5 bino-telescopes out of this, or link them up into a huge telescope of 43mmx10 = 430mm or 17 inch refractor! Just kidding..
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]