Telescope Setting Circles. Do Astronomers Still Use Them ?

Описание: 0:00 Intro
0:32 Who uses setting circles
1:35 Setting up time
2:40 Share your thoughts

Traditional mechanical telescope setting circles are largely considered obsolete for precise astronomical observation due to modern technology. They are primarily used by a small number of hobbyists for nostalgic reasons or as a basic learning tool, and are sometimes incorporated into educational programs.
Current Usage and Relevance
Amateur Astronomers: The vast majority of amateur astronomers have moved to more accurate methods like "GoTo" (computerized object finding) systems, digital setting circles (DSCs) with electronic encoders, or simply rely on star-hopping with a finderscope and star charts. Many observers view the small, mechanical circles on modern mounts as merely decorative because their inherent imprecision often makes them a "waste of time" for finding faint objects.
Visual Observers: For casual visual observing, where only bright, easy-to-find objects are of interest, simple alignment methods are sufficient, and circles aren't necessary.
Educational Programs: A few specific educational or heritage observatories might still use large, historical setting circles as part of practical training to teach fundamental astronomy principles and coordinate systems.
Specialized/Vintage Equipment: Some owners of vintage or high-end mounts with large, high-precision mechanical circles (which are rare today) can achieve reasonable accuracy, but this requires extremely precise polar alignment, which is time-consuming.
In summary, the use of traditional setting circles has fallen out of favor as electronic and digital methods offer significantly greater accuracy and ease of use, making the hobby more accessible and less frustrating for most users.