The slit

In this lesson we focus on one of the most critical adjustments in the Elvira Raman spectrometer: setting the slit. The slit controls the amount of light that enters the spectrometer and directly affects spectral resolution and signal quality. A correctly set slit ensures that your Raman spectra are sharp, well-defined, and free of unnecessary broadening or noise.

To make this process clear and easy to follow, we’ve included a step-by-step video demonstration showing how to adjust the slit on the Elvira system. You’ll see how to position the slit mechanism, choose an appropriate opening width for your sample type, and verify your setting using live spectral feedback. Whether you’re new to Raman spectroscopy or refining your technique, this visual guide will help you confidently optimize the slit for high-quality Raman measurements.

Watch the video and follow along to understand both the why and how behind proper slit adjustment in Elvira.

Learn Technical Photography for Art Examination

Technical Photography is one of the most powerful—and often overlooked—tools for the scientific examination of art and archaeology. If you are a conservator, scientist, or art collector and you are not yet familiar with this method, it is truly a missed opportunity. Using simple, affordable equipment and a clear methodology, Technical Photography allows you to reveal underdrawings, retouchings, material differences, and conservation issues in a completely non-invasive way. Far from being complex or inaccessible, it is an easy entry point into scientific analysis. In many cases, Technical Photography represents the first essential step toward a deeper understanding of artworks and archaeological objects.