Custom-made Spectroheliograph
L ittle by little, I've been working on building a custom homebuilt, non-commercial spectroheliograph for solar astronomy. A spectroheliograph is a scientific instrument used for imaging/graphing the sun in one specific wavelength at a time. It is not an instrument for visual observations though. It is used to capture any single wavelength between 400-700nm at a very narrow 3 angstroms (0.3nm) in graphical waveform. Then specialized software is used to transpose that waveform into an image. This particular spectroheliograph was designed by Christian Buil in France. He kept this particular design small and relatively simple for do-it-yourself amateur astronomers such as myself. I believe he also has spectroheliograph designs that are research-grade and costing tens of thousands of dollars. I opted for the dirt-cheap do-it-yourself and a-little-more-difficult route to build what is considered a beginner spectroheliograph. It is still a scientific instrument but, in order to