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    Area of Science:

    • Optics
    • Optical Engineering
    • Visual Perception

    Background:

    • The
    • globe effect
    • distorts images in terrestrial telescopic systems, with modern designs only partially mitigating the issue.
    • Existing theories on this phenomenon lack definitive conclusions.

    Purpose of the Study:

    • To investigate the possibility of achieving distortionless viewing in terrestrial telescopic systems.
    • To explore solutions for specific applications like horizon scanning.
    • To present a novel approach for opto-electronic systems.

    Main Methods:

    • Theoretical analysis of optical systems for distortion reduction.
    • Exploration of cylindrical optical elements for horizon scanning.
    • Development of a new interpretation of constraints and objectives for opto-electronic systems.

    Main Results:

    • Exact distortionless viewing is generally not achievable with standard terrestrial telescopic systems.
    • Distortionless horizon scanning is theoretically possible using cylindrical optical elements.
    • Opto-electronic systems offer a more feasible path to a full distortionless solution.

    Conclusions:

    • The pursuit of distortionless viewing in terrestrial telescopes requires a re-evaluation of design principles.
    • Cylindrical optics present a viable, albeit specific, solution for horizon scanning applications.
    • Design decisions should consider whether the instrument functions as an eye extension or a pictorial device, independent of psychophysical data.