Shelyak Star'ex Low Resolution Optical Kit
Star’Ex Low Resolution (LR) optical kit: all the optical elements to make your own Star’Ex LR instrument, and make your first star spectra.
Complementary near infrared (IR) available too, to observe more horizon
With Star’Ex LR (Star’Explorer), make your own spectrograph yourself to obtain the spectrum of low-brightness stars and also objects such as comets, galaxies, quasars! A special feature of Star’Ex LR is to show the entire visible spectrum (from blue to red) in a single shot.
Star’Ex is a project proposed by Christian Buil, in line with Sol’Ex. A dedicated site gives you all the information you need to assemble and operate this instrument. You manufacture the parts in 3D printing (or have them made by a specialist), then you assemble the instrument with the optical elements of this kit. All the optical elements needed to make a Star’Ex LR are included in this kit: slit, grating, lenses, guide elements, etc. You can find more information about the Sol’Ex & Star’Ex project here.
Example of spectrum obtained with a Star’Ex LR – VIS :

Example of spectrum obtained with a Star’Ex LR – IR :

With a small telescope, you can make spectra Low resolution on weak objects (stars, nebulae, galaxies, Quasars etc.), i.e. you will be able to observe the entire visible range, and distinguish the continuum of the object (which indicates its surface temperature), as well as very many lines in absorption, or in emission (signs of the activity of the star).