Spectrograph / Spectroscope (LOWSPEC)

thingiverse

UPDATE: 2 january 2020 LOWSPEC 3.0 This version has an improved slit holder which will ensure that the whole slit length can be used. It's now possible to change different gratings easily and quickly via a redesigned grating holder system that uses magnets: https://www.youtube.com/watch?v=h4ihnS_naTo https://www.youtube.com/watch?v=T32eXb0y9zA Unfortunately this also meant that the main body, the focussing unit and guide platform had to be changed. The good news is that current users can reuse all optical components, the guide pick-off mirror, the guide lens holder, the main mirror holder and, the collimator holder. The files of the older LOWSPEC 2.0 can still be found in the file LOWSPEC_2.0_(old).zip ================================================================== A spectrograph lets you analyse light. Attaching it to a telescope enables you to discover all sorts of things about the stars. In fact, almost all we know about the universe has been obtained through spectroscopy! This field of science is becoming more and more popular amongst amateur astronomers. A commercial spectrograph however will set you back € 2000 or more! That’s why I decided to build one with a 3D printer. Of course, you’ll have to buy the optical components (slit, lenses, mirrors and grating) . But that will ‘only’ cost you about € 600. Which is a huge difference compared with a commercial spectrograph. This spectrograph is designed for f/10 telecopes. I do not have in-depth knowledge of optics. So if you can improve this design (source files are included), please let me know. Even better, share it with the rest of the world! Best regards, Paul Gerlach