LED 2 Lab

My first spectrum with my DIY spectrograph. I don't have much experience with slit spectrographs and assume my 25 micron slit is working and I'm not just looking at a grating only spectrum for some reason. Anyway, since I know most white LED bulbs peak in the red around 6100 angstroms or so, I arrive at a dispersion of 2.1 angstroms/pixel. But I don't have a reference spectrum data file to use to create an instrument calibration curve... yet.

Rick