This instrument represents a large-aperture, collapsible Dobsonian telescope designed for visible statement of celestial objects. Its defining function is a truss-tube design, permitting for a considerably decreased storage dimension when not in use. The ‘400p’ designation signifies a major mirror diameter of 400mm (roughly 16 inches), offering substantial light-gathering functionality. As a Dobsonian, it makes use of a easy, alt-azimuth mount, prioritizing ease of use and affordability for newbie astronomers.
The first benefit of the sort of telescope lies in its massive aperture. Bigger apertures acquire extra gentle, enabling the statement of fainter and extra distant objects, similar to nebulae, galaxies, and star clusters. The collapsible design addresses the problem of portability typically related to massive telescopes. Historically, large-aperture devices had been cumbersome and tough to move. The truss-tube system permits the optical tube meeting to be disassembled, making it significantly extra manageable for transport to dark-sky areas away from city gentle air pollution. The Dobsonian mount, invented by John Dobson, additional contributes to its accessibility by providing a steady and intuitive platform with out the complexity and expense of computerized equatorial mounts.