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LED torch pointer

BinocularSky

By BinocularSky
in The Astro Lounge

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BinocularSky

BinocularSky

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Last evening saw the "proof of concept" outing of my "torch* pointer" alternative to a green laser for guiding people around the night sky at outreach events. LED torch with bits of a cheap Lidl smartphone-telephoto lens (that was pretty useless for its intended purpose) replacing the lens in the torch.
 
Lower part of image indicates beam spread at approx 10m. In practice, it was easily narrow enough to separately indicate and name the three stars in Orion's belt.
 
319133533_Torchpointer.thumb.png.8496a11b9bf1b1e1e0797d87ad75bf73.png
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