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How to make a laser pointer

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17 years 4 months ago #49735 by albertw
How to make a laser pointer was created by albertw

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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17 years 4 months ago #49737 by dave_lillis
Replied by dave_lillis on topic Re: How to make a laser pointer
now there's one for a rainy day ! :twisted:

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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17 years 4 months ago #49744 by Frank Ryan
Replied by Frank Ryan on topic Re: How to make a laser pointer
I'm juuusst gonnna forget I saw that.
Knowing my 'Mr Bean' luck.

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

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17 years 4 months ago #49746 by phoenix
Replied by phoenix on topic Re: How to make a laser pointer
I was on a demolition job today and 5 computers were being dumped. I had thought about stripping out the drive motors for a dob platform but maybe I should have thought more about evil carnage :twisted:

Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/

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17 years 4 months ago #49752 by pmgisme
Replied by pmgisme on topic Re: How to make a laser pointer
If ye need the €5 to buy this one I'll lend it to you:

www.instapark.com/category/laser-products/ll-2.php

Peter.

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17 years 4 months ago #49753 by johnomahony
Replied by johnomahony on topic Re: How to make a laser pointer
I am amazed at the lasers that can be bought on Ebay for around €25 with power outputs up to 240mW. You can get them through UK registered companies but they are shipped direct from Hong Kong. They are illegal in the UK over a certain class (must be less than 5mW I think).
Anything approaching this level of power is extremely dangerous and will cause permanent eye damage of someone is exposed to one-they should be banned.
I remember using green argon ion lasers in the past with an output of about 50-100mW. It was a requirement that you had your retinas photographed by an eye specialist both before and after usage and protective goggles were mandatory during use. Now you can get laser pointers up to 500mW which can start fires and wave them around in the open - madness.

The Lord giveth, the Revenue taketh away. (John 1:16)

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