sg == .. automodule:: iris.sg .. rubric:: Functions .. autosummary:: :toctree: :template: function_custom.rst dn_to_photons effective_area open .. rubric:: Classes .. autosummary:: :toctree: :template: class_custom.rst SpectrographObservation .. rubric:: Modules .. autosummary:: :toctree: :template: module_custom.rst :recursive: background