Which spectrometer do you have, Sta? Just trying to get a handle on how accurate it is.
I'm sure the 565nm looks more yellow next to any green laser from 532nm down to 502nm. I suspect the 575nm one looks orange only when next to the 565nm one. What does it look like alone? I haven't seen the 565nm ones, but people I know have said it is greenish yellow. That sounds about right as my 574nm looks lemon yellow to me.
It’s a $70 Thunder Optics piece of crap, so it’s not too accurate, but it’s good to within 1nm usually. I calibrated it specifically for this range (using 532 and 589 as reference points.)
And 565 is very greenish yellow, it’s surprisingly similar to 561 though.