These are a few of my favorite spectra out of the hundreds that I’ve taken. All of them (except for the vertically trailed Mira) were recorded using the drift scanning method, my dobsonians, a Star Analyzer slitless diffraction grating, and high dispersions in the range of 1.7-1.1Å/px. If you’d like to record similar spectra for yourself, I’ve written a step-by-step guide to the drift scanning method which you can read here.
Most of these renders were created using a combination of Python/Matplotlib to graph the data, and Photoshop to do the rest. All of the 2D spectra images displayed are the real photos used to create the graphs, with minimal processing (black and white point, and colorization).