Star Analyser 100 Grating

Just screw it into the filter thread like any other 1.25" accessory and you're ready to capture stellar spectra. The diffraction grating managed to split Vega's light into a clear, measurable rainbow on my very first attempt. For the price, this is the easiest way to get into amateur spectroscopy.

First light with this wasn't perfect—my initial focus was way off—but sliding it into the 1.25″ filter wheel made the whole setup simple, and once I got the spacing right, the spectra popped on screen. Definitely a steep learning curve for a beginner, but the payoff is worth it.

The SA-100 screws right into a standard 1.25" filter thread, made getting my first spectrum of Sirius incredibly simple. I was surprised how clear the diffraction lines came out even with my modest 80mm refractor.