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I am still trying to find in various ANZ standards some data on safety levels for laser radiation, to be able to calculate (roughly) the effects of staring at -13m star through telescope and unaided eye.
It will happen, eventually (me finding the right standard, I mean).
But, for the star 0m the "solar constant" is 25nW/m2 (the previous result of 3.7 nW was based on Sun being -29, but is is actually -27.
10" telescope will collect 6.3nW
-13m in 10" telescope will have a power flux close to 940uW, almost 1mW !!
That is A LOT !! And definitely above safe level.
You can look at -13m star without aid, but through any telescope it can fry your retina (provided the image is focussed).
Last edited by bojan; 03-05-2010 at 08:03 PM.
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