How to choose the appropriate caliber for astronomical telescopes? Huaian astronomical telescope manufacturer tells you!

The relative aperture A, also known as the optical force, is the ratio of the effective aperture D of the telescope to the focal length f, that is, A=D/f.

The larger the relative aperture is, the more advantageous to the observation of planets, comets, galaxies, and nebulae, because their imaging illuminations are proportional to the square of the relative aperture of the telescope (A2). Therefore, when making celestial photography, we should pay attention to choosing the appropriate relative aperture.

The larger the aperture of the telescope, the stronger the concentrating power. The more observable objects are, the brighter the celestial bodies are.

It reflects the ability of telescopes to observe celestial bodies, to observe more details of the planets, to distinguish two stars, and to find darker asteroids and comets. You can choose the astronomical telescope with the largest caliber according to your economic capability.