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  1. A

    What do you do with your laser.

    star pointing/alignment for my telescope,
  2. A

    Why non-green dpss lasers are so expensive?

    holodeck? great.. .
  3. A

    pen laser vs industrial laser ?

    thanks for the answers, how about this : 150mW 405nm Blue-Violet Laser Diode Module with Driver - eBay (item 280432875514 end time Mar-02-10 18:00:54 PST) I only need 9v / 12v battery to light it on, is that right? or i'm gonna need something else? and he says "This module use adjustable...
  4. A

    pen laser vs industrial laser ?

    which one is better? laser pen or industrial type ? (same mw) i've heard that green are more visible than red, if i compare 150mw red with 100mw green, how is it? because i have 30mw green and 100mw green are about the same visibility.. :thinking: .


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