- Sep 20, 2013
Are you aware your device only has 2048 pixels to cover the spectrum? Depending on your grating, That's probably less than 3 pixels per nm. That second decimal is an artifact of the polynomial calibration regression, and should be rounded off. The average beam position would only need to move one pixel over to account for a drift of 0.5nm. You don't think it's possible ANY thermal effects internal to your device could account for a 1-pixel shift?