so... I use a blank DVD-R, and ofcause that makes the grating curved.
Are there any software for correcting that?
Another thing. Does it mattitr if the grooved side of the DVD is towards the incident light or not?
Want to talk about soil? Join us for Open Call every Tuesday until Mar. 30 and our kick-off call on this topic on Feb. 2! Click here for details on how to join!