| Variable Name and Aliases | Default Value | Arguments, Unit, Description |
| geometry.conf |
| dir_base|dir_base_directory | | base directory in which all subordinated files can be found |
| FOVType|FOV | round | selection: round|elliptic|square|rectangular|box|2pi|4pi|table :geometrical shape of the field of view |
| view_mode|DetectorViewMode | normal_view_mode | selection: normal_view_mode|limb|look_at :detector view mode |
| ISF|InstrumentSensitivityFunction | unweighted | selection: unweighted|cosine|gaussian :FOV sensitivity function |
| position_description|DetectorPositionDescription | spherical | selection: spherical|cartesic :description of the detector position |
| Altitude|Height|altitude|height|a|h | 0.001000 | [km] geo altitude detector coordinate |
| CoLatitude|colatitude|colat | 0.057296 | [degree] geo co latitudinal detector coordinate |
| Longitude|longitude|long | 0.057296 | [degree] geo longitudinal detector coordinate |
| ReferenceAltitude|ReferenceHeight|Referencealtitude|a_ref|h_ref | 0.001000 | [km] geo altitude detector reference coordinate |
| ReferenceCoLatitude|reference_colatitude|colat_ref | 0.057296 | [degree] geo co latitudinal detector reference coordinate |
| ReferenceLongitude|reference_longitude|long_ref | 0.057296 | [degree] geo longitudinal detector reference coordinate |
| X|x | 0.000000 | [km] cartesic detector x coordinate |
| Y|y | 0.000000 | [km] cartesic detector y coordinate |
| Z|z | 0.000000 | [km] cartesic detector z coordinate |
| ReferenceX|x_ref | 0.000000 | [km] cartesic detector x reference coordinate |
| ReferenceY|y_ref | 0.000000 | [km] cartesic detector y reference coordinate |
| ReferenceZ|z_ref | 0.000000 | [km] cartesic detector z reference coordinate |
| NorthAzimuth | 0.000000 | [degree] azimuth angle towards north pole meridian |
| Elevation|elevation | 0.000000 | [degree] elevation angle |
| Roll|roll | 0.000000 | [degree] FOV Roll angle |
| Omega|omega|FOV | 0.000000 | [degree] FOV opening angle |
| OmegaHorizontal|FOVH | 0.000000 | [degree] horizontal FOV size |
| OmegaVertical|FOVV | 0.000000 | [degree] vertical FOV size |
| ISGaussSigma | 0.000000 | [degree] round FOV instrument sensitivity sigma |
| ISGaussSigmaVertical | 0.000000 | [degree] rectangular FOV instrument sensitivity vertical sigma |
| ISGaussSigmaHorizontal | 0.000000 | [degree] rectangular FOV instrument sensitivity horizontal sigma |
| box_detector_definition|box_detector | none | definition of a box detector |
| b_invert_faces | no | indicates whether to invert box faces and emmit in the opposite direction |
| TangentHeight | -1.000000 | [km] for limb calculations |
| TangentHeightPrecision | 0.000100 | [km] precision of the tangent height point calculation |
| b_tangent_height_with_refraction | no | calculate tangent height point considering refraction |
| SunPositionDescription|SunPosition | detector_relative | selection: absolute|detector_relative :position description of the sun |
| SunDistance|distance_to_sun|AU | 149592000.000000 | [km] distance of planet to the sun |
| SunDiameter|diameter_sun | 1392000.000000 | [km] sun's diameter |
| SunLongitude|sun_longitude|long_sun | 0.000000 | [degree] sun longitude |
| SunCoLatitude|sun_colatitude|colat_sun | 0.000000 | [degree] sun colatitude |
| SZA|sza|solar_zenith_angle | 0.000000 | [degree] solar zenith angle (detector depending) |
| SRAA|sraa|sun_relative_azimuth_angle | 0.000000 | [degree] sun relative azimuth angle (detector depending), math. sun - detector |
| b_forward_geometry|b_forward_RT|b_forward_MC | no | forward Monte Carlo radiation transport simulation |
| fn_FOV_function|fn_sf | file | FOV function matrix file |