Introduction A telescope creates the illusion of objects in the sky appearing closer than they actually are. This is created by focusing it at infinity… Read More »Why Must the Telescope be Focused at Infinity?
Introduction Маnу wоuld neglect binoculars when entering the world of astronomy, as most think telescopes are superior and their only ticket to seeing space. If… Read More »Why are Binoculars Better Than Telescopes?
Resolving power (or resolution) of an optical telescope is the ability to see small details in the image. It is an angular distance between two… Read More »Rayleigh and Dawes resolution
Magnification is the ability of a telescope to magnify an object. A lot of observers, not only beginners, don't understand why higher magnification often doesn't… Read More »Lowest and highest useful magnification
The light gathering power (also light grasp) is an ability of a telescope to collect more light than the human eye. It is expressed as… Read More »Light gathering power
A finderscope is a device found on top of a primary telescope. It is used for manually aiming the telescope to the desired celestial object.… Read More »Finderscope
Moving the telescope from point A to point B in the sky with the use of a motor drive is specified as slewing. Fast slewing… Read More »Slew speed
For proper use, a telescope needs to be supported by a telescope mount. The mount is designed to: support the weight of a telescope, reduce… Read More »Types of telescope mounts
Every telescope needs to be aligned before the first use or if the position of a telescope has changed. For accurate tracking of celestial objects… Read More »Telescope alignment methods
The optical design of a telescope is a feature that defines what sort of observing the telescope is suitable for. Depending on the design, some… Read More »Optical design of a telescope