A spectrometer module comprising: a housing; an illumination cavity in the housing; an illumination channel with a field-of-illumination and a field-of-illumination axis, the illumination channel being positioned at least partially within the housing; and a detection channel with a field-of-view and a detection axis, the detection channel being positioned at least partially within the housing and adjacent to the illumination channel; the illumination channel including an illumination source mounted within the illumination cavity in the housing and an illumination optical assembly aligned with the illumination source, the illumination source being configured to generate an emission; the detection channel including an illumination detector mounted within a detection cavity in the housing and being configured to detect at least a portion of the emission reflected from an object; the detection channel further including a detection optical assembly aligned with the illumination detector, and a Fabry-Perot component mounted between the detection optical assembly and the illumination detector and aligned with the detection optical assembly and the illumination detector; and the illumination channel is configured to direct a portion of the emission to the m object and the detection channel being configured to collect a portion of the emission reflected from the object, wherein: the illumination optical assembly includes a segmented optical element configured to direct the field-of-illumination and the field-of-illumination axis toward the detection channel such that light reflected from the object is incident on the detection channel with lower angles of incidence. a housing; an illumination cavity in the housing; an illumination channel with a field-of-illumination and a field-of-illumination axis, the illumination channel being positioned at least partially within the housing; and a detection channel with a field-of-view and a detection axis, the detection channel being positioned at least partially within the housing and adjacent to the illumination channel; the illumination channel including an illumination source mounted within the illumination cavity in the housing and an illumination optical assembly aligned with the illumination source, the illumination source being configured to generate an emission; the detection channel including an illumination detector mounted within a detection cavity in the housing and being configured to detect at least a portion of the emission reflected from an object; the detection channel further including a detection optical assembly aligned with the illumination detector, and a Fabry-Perot component mounted between the detection optical assembly and the illumination detector and aligned with the detection optical assembly and the illumination detector; and the illumination channel is configured to direct a portion of the emission to the m object and the detection channel being configured to collect a portion of the emission reflected from the object, wherein: the illumination optical assembly includes a segmented optical element configured to direct the field-of-illumination and the field-of-illumination axis toward the detection channel such that light reflected from the object is incident on the detection channel with lower angles of incidence.