**Contents**show

The amount of light that a telescope can collect is proportional to the cross-sectional area. Now the area of a circle is A=PiR^2=Pi(D/2)^2 in terms of the diameter. Since the area is proportional to the square of the diameter, a 3m diameter telescope can collect 3^2=9 times as much light as a 1m diameter telescope.

## How much greater is the light collecting area of a 3 meter telescope than a 1 meter telescope?

How much better is the resolution? The light-collecting area would be 4x greater on a 6-meter (which has 36) telescope than a 3-meter telescope (which has 9).

## What is the light collecting area of a telescope?

The aperture of a telescope is the diameter of the light collecting region, assuming that the light collecting region has a circular geometry . For an optical instrument, the aperture is the diameter of the objective lens (refracting telescope) or the primary mirror (reflecting telescope).

## How much more light is collected by a telescope with a mirror that is 30 meters in diameter compared to a telescope with a 10 meter mirror?

TMT, with its 30-meter (nearly 100-foot) diameter mirror, will have nine times the light-gathering power of today’s best telescopes. When compared to the Hubble Space Telescope, TMT will have 156 times the collecting area and more than 10 times its resolution at certain wavelengths.

## How much greater is the light collecting area of a 4m telescope than that of a 1’m telescope?

A telescope with a mirror that is 4 meters in diameter can collect 16 times as much light as a telescope that is 1 meter in diameter.

## What is the light collecting area of a 3m diameter telescope?

The amount of light that a telescope can collect is proportional to the cross-sectional area. Now the area of a circle is A=PiR^2=Pi(D/2)^2 in terms of the diameter. Since the area is proportional to the square of the diameter, a 3m diameter telescope can collect 3^2=9 times as much light as a 1m diameter telescope.

## How will the light collecting area of the Thirty meter telescope compare to one of the Keck telescopes?

The light collecting capability of the TMT will be 10 times that of the Keck Telescope, and more than 144 times that of the Hubble Space Telescope.

## What is the light collecting power of a telescope quizlet?

What is meant by light-gathering power, and what is it about a telescope that determines its light-gathering power? Light-gathering power is the measure of how much light if collected by a lens or mirror. The area of the lens or mirror determines its light-gathering power.

## How does the light collecting area of a telescope with a 10 meter diameter mirror compare to that of a telescope with a 5 meter diameter mirror?

Answer: The 10 meter telescope has 4 times as much light collecting area as the 5 meter telescope.

## How does the light collecting area of an 8 meter?

How does the light-collecting area of an 8-meter telescope compare to that of a 2-meter telescope? The 8-meter telescope has 16 times the light-collecting area of the 2-meter telescope. The Chandra X-ray Observatory must operate in space because: X rays do not penetrate Earth’s atmosphere.

## How much more light can a telescope with a 10 meter mirror gather compared to a telescope with a 2-meter mirror?

2. Angular resolution: Telescopes that are larger are capable of taking images with greater detail. How does the collecting area of a 10-meter telescope compare with that of a 2-meter telescope? a) It’s 5 times greater.

## How much more light does a telescope receive with a 6 meter diameter mirror compared to a telescope with a 2-meter diameter mirror?

ANSWER ——————- A telescope collects light in a rate proportional to the area of its primary mirror which is proportional to the diameter squared. Hence a 6 m telescope collects light (6/2)^{2} = 9 times faster than a 2 m telescope. A 12 m telescope collects light (12/2)^{2} = 36 times fasters.

## How much more light would a 10 telescope collect compared to a 2 telescope?

Purposes. Collect more light: in order to detect fainter objects. This is the most important function of telescopes. Thus, a 10-in diameter telescope collects (10/5)^{2} = 2^{2} = 4 times as much light as a 5-in telescope.

## How much more light does an 8 meter telescope gather?

The 8-meter telescope has 16 times the light-collecting area of the 2-meter telescope.

## How do you calculate the light-gathering power of a telescope?

Comparisons of different-sized apertures for their light-gathering power are calculated by the ratio of their diameters squared; for example, a 25-cm (10-inch) objective will collect four times the light of a 12.5-cm (5-inch) objective ([25 × 25] ÷ [12.5 × 12.5] = 4).

## What is the light-gathering power of an 8 inch telescope compared to a 4 inch telescope?

What is the light-gathering power of an 8 inch telescope compared to a 4 inch telescope? the source is approaching us at 2 % of the speed of light. You just studied 26 terms!