A support structure comprises image formers, weapons and sighting systems. An image former system is completely practicable by individuals of short stature or limited mobility, especially those in wheelchairs. Ordinary telescope optics and extremely rigid and simplified mechanical structural system allow the imagers incident optical axis to move through three-dimensional space while the eyepiece image moves in one plane. Elevational rotation of the imager about the eyepiece allows the observer to view 360 degrees in elevation without eye movement. A main tube tangential to the objective and parallel to the incident optical axis concentrically receives optical supports which retain the optics. The optical elements may be installed, removed, replaced and cleaned without realignment of the optics. The optical support design receives reflective or refractive optics of varying focal lengths; the objective support accommodates cameras without focal adapters. The structural elements may receive ordnance and sighting means.