For visual observation:
Magnification = (Focal Length of Objective Lens) divided by (Focal Length of Eyepiece)
(They have to be measured in the same units.)
For prime-focus Photography:
(One focal-length of the Objective Lens on the film) = (one radian in the sky)
Magnification= (Focal Length of Objective Lens)/(Focal Length of Eyepiece) They have to be measured in the same units.
Light Gathering Power
LGP = Aperture in mm divided by 7mm and then squaring the result
A measure of the amount of radiation brought into focus by a telescope.
Light gathering power is the ability of a telescope to collect light, porpotional to the area of the telescope's objective lens or mirror
Is related to the telescope's aperture.
the surface area of the 8m (201 m^2) telescope is 1/4 that of the 16m (804 m^2) telescope A=(Pi)r^2
I know of at least three. I hope these help: - magnifying power - light gathering power - field of view
A refracting telescope is a type of optical telescope. It was used in astronomical telescopes and spy glasses. Objective lens are used to produce the image.
It will become 9 times as great.
a. a small diameter reflecting telescope.
the surface area of the 8m (201 m^2) telescope is 1/4 that of the 16m (804 m^2) telescope A=(Pi)r^2
The light gathering power of a telescope is directly proportional to the area of the objective lens of the telescope.
I know of at least three. I hope these help: - magnifying power - light gathering power - field of view
Yes, light gathering power is proportional to the area of the objective. The more light a telescope can gather, the better the telescope will be able to allow the user to see.
1) light-gethering power, 2) resolving power, and 3) magnifying power
The light-gathering power of a telescope is determined by its aperture, which refers to the width of a telescopes primary mirror or objective lens.
The light gathering power is directly proportional to the light gathering area, so all you have to do is figure out the ratio of the areas of the two scopes. Another answer: Do you remember fourth grade arithmetic? Do you remember pi r square?
answ2. Telescopes come in two flavours, reflecting and refracting.Reflecting telescopes rely on the light first meeting a mirrored reflector which may be of large area, then passes through various focusing lenses.Refracting telescopes have the light passing through a lens, before meeting the focusing lenses etc.Now, there is a loss of light each time the light passes into or out of a glass, even ignoring imperfections of the surface. And more when that is considered.And it is more than doubly difficult to make a large lens than a large mirror.And since astronomy is mainly limited by the light-gathering power, this is vital to astronomers.A1. Nothing. Any device to see the light of distant stars or other objects would still be called a telescope.
Yes, both have to do with the diameter of the objective mirror/lens
Radio telescopes allow us to see things that can't be seen in visible light. And vice versa, optical telescopes can show things that are not visible in radio telescopes. So, the information from both kinds of telescopes really complements each other.
A refracting telescope is a type of optical telescope. It was used in astronomical telescopes and spy glasses. Objective lens are used to produce the image.
9 times greater.