Schmidt camera optical axis of the Schmidt design creates a Schmidt-Newtonian telescope. The addition of a convex secondary mirror to the Schmidt design directing light through a hole in the primary mirror creates a Schmidt-Cassegrain telescope. The last two designs are popular with telescope manufacturers because they are compact and use simple spherical optics. A short list of notable and/or large aperture Schmidt cameras. Schmidt camera A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric astrophotographic telescope designed to provide wide fields of view with limited aberrations. The design was invented by Bernhard Schmidt in 1930. Some notable
What Are The Theosophists? often attracted all sorts of neurotics, hysterics and even madmen: "All organisations which depend on enthusiasm and opposition to conventional opinion suffer from this problem to some degree; Theosophy appears to have been especially prone to it. The permanent residents at Adyar during the 1880s and '90s were typical. A quarrelsome collection of minor English aristocrats, rich American widows, German professors, Indian mystics and hangerson of every description, they were all eager to have their say, especially during Olcott's prolonged absences, and all ready to quarrel with one another." What Are The Theosophists? "What Are The Theosophists?" is an editorial