Green Laser Pointers for Visual Astronomy: How Much Power Is Enough?

@article{Bar2010GreenLP,
  title={Green Laser Pointers for Visual Astronomy: How Much Power Is Enough?},
  author={S. Bar{\'a} and Marisol Robles and Isabel Tejelo and R. I. Marzoa and H. Gonzalez},
  journal={Optometry and Vision Science},
  year={2010},
  volume={87},
  pages={140-144}
}
Purpose. Green laser pointers with output powers in the tens to hundreds of milliwatt (mW) range, clearly exceeding the limiting 5 mW of American National Standards Institute class 3a (International Electrotechnical Commission class 3R), are now easily available in the global market. They are increasingly being used in public sky observations and other nighttime outreach activities by educators and science communicators in countries where their use is not well regulated, despite the fact that… Expand
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