520 nm vs 532 nm laser who is better ?

[Alaskan]

I need to research the application of a spacial filter acting as an expander, have not run across that info before, what is the downside? I imagine it must be filtering prior to collimation?

 

[kecked]

Watch planters videos. Not my idea. The only thing I do is change the ratio of the lens to act as s telescope

 

[Edgeoftomorrow011]

Sanwu pocket 520nm

 

[hakzaw1]

Sanwu pocket 520nm

Ed-- we necroed!! last post before yours is from 2019--duh/ deleting mine if I can

 

[Unown (WILD)]

will look for your intro thread-

len

He's back!