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Re: Telescope danger to sight. Was: Venus transit ...
From: Jim Thompson
Date: 2004 May 13, 07:00 -0300
From: Jim Thompson
Date: 2004 May 13, 07:00 -0300
That's precisely how they studied the Venus sun transits in centuries past, and how amateurs study sunspots today. They were able to trace the position of Venus on the paper as it moved across the sun's image. Jim Thompson jim2@jimthompson.net www.jimthompson.net Outgoing mail scanned by Norton Antivirus ----------------------------------------- > -----Original Message----- > From: Navigation Mailing List > This is getting toward OT, but my brother had one of those "astronomy" > scopes about 4 decades ago, a 3 or 4 inch reflector in a cardboard > mailing tube, IIRC. We looked at a solar eclipse by using it to project > an image on a piece of white Bristol board. WOrked fine, and no danger > to anyone.
