The ability for a telescope to resolve an object is, as you'd expect, directly related to the size of the mirror or lens. There is a simple relationship between mirror size and resolving power: R = 11 ...

Prior to flybys, scientists used mathematical laws and observation to determine the characteristics of the planets.

Using the unique capabilities of telescopes specialized on cosmic gamma rays, scientists have measured the smallest apparent size of a star on the night sky to date. The measurements reveal the ...

The baseline is the diameter across the telescope from one edge to the other; as it increases, the telescope's angular resolution increases. The surface area of the mirror is not important to ...

Angular Diameter Factors The apparent diameter of a planet - how large it appears to us on the Earth when viewed through a telescope - depends only on the physical size of the planet and how far it is ...

When you consider the EHT as ONE radio telescope, I do understand that the angular resolution is very high due to the wavelength of the incoming signal and earth’s diameter.

The angular resolution of a telescope really just depends on two things: the size of the opening and the wavelength of light. Using smaller wavelengths (like ultraviolet or x-rays) gives a better ...

A telescope's diameter limits its ability to resolve astronomical objects. A way around this however is to coherently recombine the light from a number of telescopes. This essentially creates a giant ...

The Allen Telescope Array (ATA) is the first of a new generation of radio telescopes. It is a radical departure from traditional radio telescope design and construction.

An arcsecond is a measure of angular size (how big an object appears to be – if two objects are the same physical size, the one farther away will appear smaller, and have a smaller angular size).