Alignment issues

[nuphotonix]

OK
When doing the first set up on the optical alignment.. my Red laser looks at the X galvo mirror straight on, passing through the two dichlors for the 532nm and the 445nm lasers. Now I have the red laser painting the galvo mirror on it's center, with the mirror at a 90 degree angle so the beam points straight up. As I set the other two colors in place, I am wondering if I should "target" something else much farther away, say 200', in order to minimize cross beam divergance?
Currently, my red laser is a square dot, with the Blue just inside the square and the green inside the blue. I wonder also if I defocused the blue and green at the same 200', would I get a better color mix?
Thanks nerds!

[Picasso]

Do your alignment first to the galvos, next project about 50-100 feet, 200 is a little far depending what optics are in your lasers. Use the ILDA test frames or a grid white all lasers on full. Helps if you can block off your lasers one by one as you do the projected alignment.

I would not defocus any of the lasers. We just have to deal with the unmatched beam size and divergence. Things are changing fast I bet in another 2 years beam size will not be a problem.

[nuphotonix]

I have found a reason that my colors are off!!! The factory laser mounting brackets on the beam table are 1/4 shy of coming into full alignment. BOTH the green and red srike the edge of the dichlor holder. So I I am machining both plates to allow for the correct centering of the beams to the dichlors. I think this will cure my magentia on white look of the laser. Ill keep you posted. pictures soon!