Old 07-30-2014, 03:59 PM #1
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Default Needing some advice on recent purchases

I'm new to lasers and recently read up on them before purchasing and it says <1mW is legal for the UK. I purchased off Amazon.co.uk and they were listed as <1mW but one is a <1mW Class IIIB and the other <5mW. Confused to say the least.

Have the sellers just sold them unknowingly? I've not had a chance to use them in the dark yet but they were pretty bright during daylight. I do have a pic of them with the stickers.



You can just see it says <5mW on the second one. Neither were imported as both UK sellers but I'd assume they maybe imported at some point?

My main purpose for them is back yard astronomy presentations. Will it just be a case of be extra careful with use?

Any help with this is appreciated.


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Old 07-30-2014, 04:15 PM #2
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Default Re: Needing some advice on recent purchases

Chances are both are way over 1mW... probably around 30-50mW. Did you get them from eBay?

Be very careful with them, green lasers can emit invisible radiation that can hurt your eyes!
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Old 07-30-2014, 04:16 PM #3
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Default Re: Needing some advice on recent purchases

yes be careful i have one myself it says 10mW on mine but i think it peaks atleast 20 or 30mW so it can be used for astronomy, this is for the 532nm, the 405nm i have is very weak tho but its normal for this wavelength.
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Old 07-30-2014, 04:26 PM #4
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Default Re: Needing some advice on recent purchases

Cheers for the responses. Both were bought off Amazon.co.uk hwang21. I've also got a 650nm on its way so shall see what the sticker says on that. For just back yard stuff, is there any way these could land me in trouble even if I'm using them responsibly?
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Old 07-30-2014, 05:51 PM #5
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Default Re: Needing some advice on recent purchases

Not really, just don't shine them at obvious flight paths, other people, house windows, road signs et al. The beams won't be so visible as to draw attention from far around so you shouldn't attract trouble.

I personally store my lasers in a case out of sight and there aren't many people I am open about the hobby with. Not only do most normal people not understand the attraction, but you can guarantee more people than you think just associate the hobby with those that shine Arctics at helicopters. I personally don't want to be associated with that nor do I want them taken away so I'd keep hush.
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Old 07-30-2014, 05:51 PM #6
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Default Re: Needing some advice on recent purchases

doubt that just avoid surfaces that can reflect the laser back.
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