new pics using lasers and water 1/5/18

[paul1598419]

Been trying to rep you for this, but it will take more time before I can get to you again.

 

[brucemir]

Thanks Alex and Cynicalbrad. It is film adhered to glass I think. I have a Laserhlow grating that about .25” in diameter that is glass and cost me around 65 dollars. For what I use them for the D L ones are fine. I also have their matrix gratings too

Paul - it’s the thought that counts!