Optical apparatus

An optical system comprising:

• a plurality of internal apertures, wherein each internal aperture is operable to receive a corresponding aperture-specific optical signal;
• a plurality of external optical assemblies, wherein each external optical assembly corresponds to one of the internal apertures, and each external optical assembly is operable to direct the aperture-specific optical signal of the corresponding internal aperture in a corresponding external direction, wherein the external direction for each external optical assembly is independently controllable;
• and
• a telescope assembly positioned between the plurality of internal apertures and the plurality of external optical assemblies, wherein the telescope assembly defines a shared optical train arranged to direct the aperture-specific optical signals between each internal aperture and the corresponding external optical assembly, wherein
• the shared optical train comprises a single concave parabolic mirror, and each external optical assembly comprises an input sub-aperture arranged facing the single concave parabolic mirror whereby each corresponding aperture-specific optical signal is reflected by the single concave parabolic mirror.

An optical system comprising:

• a plurality of internal apertures operable to receive a plurality of aperture-specific optical signals, wherein each internal aperture is operable to receive a corresponding aperture-specific optical signal;
• a plurality of external optical assemblies, wherein each external optical assembly corresponds to one of the internal apertures, and each external optical assembly is operable to direct the aperture-specific optical signal of the corresponding internal aperture in a corresponding external direction, wherein each external optical assembly is operable to adjust the external direction along which the aperture-specific optical signal of the corresponding internal aperture is directed, and each external optical assembly is independently controllable to adjust the corresponding external direction;
• and
• a telescope assembly positioned between the plurality of internal apertures and the plurality of external optical assemblies, wherein the telescope assembly defines a shared optical train arranged to direct the plurality of aperture-specific optical signals between the plurality of internal apertures and the plurality of external optical assemblies, wherein the shared optical train is arranged to direct the aperture-specific optical signals between each internal aperture and the corresponding external optical assembly.