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Old 05-16-2012, 11:07 PM #1
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Default laser splash/ haze galaxy?

what causes the weird galaxy effect around a laser dot? i got some lasers and they did not have it at first but it randomly grew and now it looks more like the milky way galaxy...bright in middle with fading haze effect around it... is this caused by water or dirt? i blew on the lenz with an keyboard compressed air cleaner...but that did not get rid of it



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Old 05-16-2012, 11:33 PM #2
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Default Re: laser splash/ haze galaxy?

Can you give us more info about your lasers bud?
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Old 05-16-2012, 11:36 PM #3
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Default Re: laser splash/ haze galaxy?

I'll bet it is just dirt that has slowly accumulated on the lens. Get a LensPen and see if that will clean it up. If you don't want to buy one, try a cotton swab and alcohol.
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Old 05-16-2012, 11:46 PM #4
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Default Re: laser splash/ haze galaxy?

ok well i have this one-- Purchase 200mW 650nm Adjust Focus Red Laser Pointer with 2 * CR2 Batteries (Black) with 1 Laser Pointer 2 CR2 Battery - Free Shipping and this one

Ultra Power 200mW Green Laser Pointer + LED Torch Light

they started out with just the dot but gradually got the general aera effect around the dot...
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Old 05-16-2012, 11:56 PM #5
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Default Re: laser splash/ haze galaxy?

This is the second time you posted in the Welcome section after being told not to. Please stop.
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Old 05-17-2012, 12:00 AM #6
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Default Re: laser splash/ haze galaxy?

sorry i didnt know where to post...i thought i was in the right section
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Old 05-17-2012, 12:07 AM #7
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Default Re: laser splash/ haze galaxy?

Use the "General" section please.
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Old 05-17-2012, 12:48 AM #8
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Default Re: laser splash/ haze galaxy?

Quote:
Originally Posted by deathstarlaser View Post
what causes the weird galaxy effect around a laser dot?
Dirty lens, and the laser beam being being reflected by the dirt particles.

Use compressed air to clean the lens. If that doesn't work a lens cleaning kit is best, but any microfiber towel, dabbed in isopropyl alcohol will work, or even dry, if it's just dust.

Fun trick to try with a cheaper laser 100mW+ green is best... clean the lens first, then in the dark blow on it.

You will have a very dense as you call it "galaxy effect" but with a semi powerful laser, as the moisture from your breath evaporates the halo will decrease in size

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