Direct imaging, optical spectroscopy, and photometry are done with a f/15 secondary mirror.

Because optical spectroscopy is generally less expensive and has performance adequate for many tasks, it is far more common.

For this reason, they are also commonly used in optical atomic spectroscopy.

Golay worked on many problems, including gas chromatography and optical spectroscopy.

These peaks can also be called lines by analogy to optical spectroscopy.

At Princeton he secured new research equipment and performed important experiments, establishing himself as a leader in optical spectroscopy.

Band mapping has an advantage over optical spectroscopy.

Noninvasive optical spectroscopy and imaging of human brain function.

Research during those early years was dominated by optical spectroscopy.

These effects are not limited to laser systems, or even to optical spectroscopy.