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. <EOS>