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Old 04-09-2013, 03:25 AM
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skysurfer
Dark sky rules !

skysurfer is offline
 
Join Date: Dec 2011
Location: 33S 150E (AU holiday)
Posts: 1,181
Funny news.

By the end of May I pointed my 40cm Dob in afternoon at Jupiter (still east of Sun) and noticed lots of heat: the Sun's reflection close to my head !

I took a newspaper and kept it in the focal point: about 20cm outside the tube and it started smoking instantly ....

So using a larger Dob in daytime might be a potential fire hazard !
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