Relative aperture of telescope

The relative aperture of a telescope is the ratio of the diameter of the lens to its focal length. For visual observations, high-power telescopes give a larger exit pupil size, that is, the picture is bright and clear. A larger field of view allows you to observe extended objects, which include many galaxies and nebulae, that is, objects from Outer Space. In turn, non-high-power telescopes give a greater magnification, other things being equal, and are used in working with objects where details need to be considered, that is, with planets.

Links:

  1. Wikipedia.

relative_aperture

relative_aperture.

Symbol:

A

Latex:

\(A\)

Dimension:

dimensionless

lens_diameter

Lens diameter.

Symbol:

D

Latex:

\(D\)

Dimension:

length

lens_focal_length

Lens focal_length.

Symbol:

f

Latex:

\(f\)

Dimension:

length

law

A = D / f

Latex:
\[A = \frac{D}{f}\]