Complex sentence: The simplest system for this technique consists of a camera behind a basic slit spectroscope (comprising a slit and a dispersive element), but lens-enhanced spectroscopic setups and filter-based systems are also possible.
Split into simpler sentences: The simplest system for this technique consists of a camera behind a basic slit spectroscope (comprising a slit and a dispersive element). Other lens-enhanced spectroscopic setups and filter-based systems are also possible.