Source: wikibot/long-slit-spectroscopy
= Long-slit spectroscopy
{wiki=Long-slit_spectroscopy}
Long-slit spectroscopy is a technique used in observational astronomy to obtain spectral information from celestial objects. It involves the use of a long, narrow slit placed in front of a spectrograph, which allows astronomers to gather light from a specific region of an astronomical source while minimizing the light from surrounding areas.