Spectroscope and analysis system

A spectroscope comprising:

• a light incidence section configured to allow light from an outside to be incident;
• a concave diffraction grating configured to disperse wavelengths of the light incident on the concave diffraction grating by the light incidence section;
• a light reflector having a reflecting surface swingable around a predetermined rotation axis;
• and
• a light emitter configured to emit the light reflected by the light reflector to the outside,
• wherein at least one of positions of the light incidence section, the concave diffraction grating, the light reflector, and the light emitter is adjustable in a direction orthogonal to the rotation axis.

A spectroscope comprising:

• a light incidence section configured to allow light from an outside to be incident;
• a concave diffraction grating configured to disperse wavelengths of the light incident on the concave diffraction grating by the light incidence section;
• a light reflector having a reflecting surface swingable around a predetermined rotation axis;
• and
• a light emitter configured to emit the light reflected by the light reflector to the outside,
• wherein at least one of postures of the light incidence section, the concave diffraction grating, and the light emitter is rotated around an axis parallel to the rotation axis to adjust the at least one of the postures of the light incidence section, the concave diffraction grating, and the light emitter.