| Would you buy an invisible or visible laser? |
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77% |
[ 14 ] |
| Invisible |
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22% |
[ 4 ] |
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| Total Votes : 18 |
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Aseras
Fusion Laser
Joined: 03 Nov 2006
Posts: 352
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 Posted: 6/04/07, 8:12 AM Post subject: |
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I have a water tank with the laser mounted in that for my research. it's painted ( not really paint more like truck bedliner over black anodizing ) black on the inside to simulate being real deep in the ocean. We decided to test it before we filled the tank, and just flipped the laser on via keyswitch. it took about 10 seconds to go through the other side of the tank... oops. If the tank wasn't painted it would never have done it. ( fwiw the lense was designed for underwater use so when there was no water in the tank it made a focal point on the other side convieniently.)
I'll try and get some pics if i get time. |
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bobbiac
4.99mW Green Laser Toy
Joined: 31 Jul 2007
Posts: 4
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| Posted: 7/31/07, 3:30 AM Post subject: |
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personally, i would love to have a semi-low powered UV laser w/adjustable aperture.
/me wants to make stuff glow with a laser |
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some.hacker
Modified 10mW Greenie
Joined: 22 Apr 2007
Posts: 11
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| Posted: 8/07/07, 4:08 PM Post subject: |
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| not visible to most humans |
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scopeguy20
Guest
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| Posted: 9/03/07, 11:55 PM Post subject: I SOOO Wan |
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In case you did not read my earlier post, I really want to get as good a UV laser as I can. I want to check mountains and deserts as well as other places for florescent minerals. The best would be ~266 nm and about 40 to 60 mw and using them with UV blocking eye wear would be highly recommended. Amy help out there?   |
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Cyparagon
Elite Laser
Joined: 10 May 2006
Posts: 165
Location: Wisconsin
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| Posted: 9/04/07, 9:34 AM Post subject: |
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| A UV light would be easier, cheaper, brighter, and cover a larger area. |
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scopeguy20
Guest
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| Posted: 9/04/07, 9:51 AM Post subject: UV light o |
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It is true a UV light is cheaper, but how far from a vantage point can it illuminate, 10 or so feet? Also a short wave UV is much dimmer or uses non-portable power. This is why I really want to get laser power and scan fields from small hills and mountain sides without the need to climb all over them. Make sense?  |
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Cyparagon
Elite Laser
Joined: 10 May 2006
Posts: 165
Location: Wisconsin
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| Posted: 9/04/07, 8:44 PM Post subject: |
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| and 266nM isn't short wave? It wouldn't even be visible at all and you could only tell it's there if something fluoresces. Even then, only a portion of the 40mW would fluoresce and certainly wouldn't be very visible further than 10 feet anyway. And if you can find a way to make a 266nM laser portable (as I haven't seen many UV portables recently... have you?), you can find a way to make a short wave light portable. |
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scopeguy20
Guest
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| Posted: 9/04/07, 11:25 PM Post subject: Observatio |
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| Hello, I have thought about the inverse square law diminishing the return light glow, and observation, I will use the light gathering power of 70 X 16 or my 100 by 25 binoculars. Maybe with good eye dark adaption or a telescope and my ccd camera! Thanks! All The Best! |
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Shawndoe
Elite Laser
Joined: 09 Dec 2005
Posts: 248
Picture(s): 1
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| Posted: 9/15/07, 9:10 PM Post subject: |
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Hey ScopeGuy,
Try this, get a germicidal lamp. I've seen them in protable compact flourecent formats that should be highly portable and battery operated. Granted it won't illuminate a huge area, but it doesn't need to, and here is why. You'll need to get a good digital camera with a UV filter, your an active astronomer I'd be surprised if you didn't already have something.
You'll want some clothes that are tested and don't flouece under the UV lamp. Set up your camera with UV Filter, and point towards the area you want to prospect. After dark open the shutter like you would for an astrophoto and walk the area with the light. Any area with a flouecent material will record on the digital camera. Should be fairly easy to map a pretty large area like that.
http://uvp.com/new/index.php?module=ContentExpress&func=display&ceid=5 0
If you want a laser. and you don't want to carry a 5000 Watt generator, I would consider using the N2 laser, and the camera setup above. That could be run on a car battery for days.
Given the pulsed nature of the N2 laser, and it's fairly large divergence, you could maybe pulse and slew the laser during a timed exposure. However the beam pointing assembly would be complex, and unwieldy in the field.
Have a good eno.
Shawndoe |
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scopeguy20
Guest
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| Posted: 9/15/07, 9:38 PM Post subject: Hey Cypara |
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| Do you really have a 405nM..homemade Blu-ray 100µW? |
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