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A Class 3R laser is considered safe if handled carefully, with restricted beam viewing. With a class 3R laser, the MPE can be exceeded, but with a low risk of injury. Visible continuous lasers in Class 3R are limited to 5 mW. For other wavelengths and for pulsed lasers, other limits apply.
I am a beginning astronomer with a new 8 Celestron Schmidt Cassegrain telescope. I want to view the other plants easily such as Mars, Jupiter, and Saturn. What mm eyepiece is the best for planet viewing to see the most detail? What range of eyepieces would you recommend for stargazing and astrophotography? There are a few things that enter in the choice of eyepieces. First of all, your telescope focal length.