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.Graeme (Saturn%25) gets in the good Leal light brands 5mw (only ones to get), and I tune them using a multi meter up to about the maximum available with out doing circuit modifications to about 15-18mw's.
Easy enough job , you just have to be real careful of the potentiometer or you have a buggered Laser.
After that some minor mods are required.
We have done a side by side test against a very expensive Wicked Laser so called 25mw unit and except for a slight difference in beam thickness ( more than likely manufacturing tolerance of the focusing lens) no one was able to tell the difference.
The 25mw unit was a Lead light and by rights should have had a modified circuit board and for over $300 you would want better .
So just don't assume that because it says it's 25mw that it is.
Although at 15mw you don't need any more than that.
At 15mw's there quite visible on a still clear full moon night.
You do have to be very care full even with the 5mw units as permanent blindness will result and a test done at several klm at ground level was able to fully illuminate my vehicle cabin with a green glow to the point of being able to read at night.
So defiantly make sure that the star is not moving with flashing lights.
Always ask before using them at star parties .
We use them all the time and find them very useful for pointing out objects .
You just have to be responsible which I think most Astronomers are by nature.
p.s. don't drop them as they have a crystal at the frount that is very fragile and non replaceable ecconomicaly.
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