Isn’t technology amazing. With two mirrors, diffraction grating, a 3D printer and a camera, it is possible to see stars made up of. Even that they are light years away.

The mounts is E-mount to 1,25'' telescope

Unfortunately was mine diffraction grating too bad to see any absorption band. But maybe someone else is more lucky.

Remix of https://www.thingiverse.com/thing:4629426