Newtonian Reflector
A Newtonian reflector is a type of reflecting telescope that uses a primary mirror to gather light and a secondary flat diagonal mirror to direct the light into an eyepiece for viewing. Invented by Sir Isaac Newton, this design eliminates chromatic aberration, the colorful halos often seen around stars when using refracting telescopes. The simplicity of its construction makes it a popular choice among amateur astronomers, and its affordability compared to other designs adds to its appeal. It excels at observing planets, moons, and bright deep-sky objects such as star clusters and nebulae. In the context of Science/Astronomy/Telescope hierarchy, Newtonian reflectors represent a significant branch focusing on the fundamental principles of optics and light reflection for detailed celestial exploration.