How many milliwatts is the laser pointer used in astronomy?

If you try to search for "10000mW green laser pointer" on Google, you will find many search results. For high-power green high powered laser pointers, there are many kinds of products on the Internet, but how to distinguish the authenticity? If it is a pen laser pointer, the output power is usually between 5 to 50 milliwatts or 100 milliwatts. We can reach 220mW, but the price is a bit high. We will provide you with the best way to choose reliable products. The first thing that needs to be pointed out is that the production cost of green lasers is relatively high, so the power usually does not exceed 2W. If you see a green laser marked "10,000mW", it must be a scam, and even the image may be unreliable.