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Length of Terrestrial Telescope Formula

GoLength of Terrestrial Telescope when Image Forms at Infinity Formula

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The length of Telescope is the distance between the objective lens and the eyepiece. Check FAQs

L telescope = f o + 4 \cdot f + \frac{D \cdot f e}{D + f e}

L_telescope - Length of Telescope?f_o - Focal Length of Objective?f - Focal Length of Erecting lens?D - Least Distance of Distinct Vision?f_e - Focal Length of Eyepiece?

Length of Terrestrial Telescope Example

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Here is how the Length of Terrestrial Telescope equation looks like with Values.

Here is how the Length of Terrestrial Telescope equation looks like with Units.

Here is how the Length of Terrestrial Telescope equation looks like.

113.4483 = 100 + 4 \cdot 2.5 + \frac{25 \cdot 4}{25 + 4}

113.4483cm = 100cm + 4 \cdot 2.5cm + \frac{25cm \cdot 4cm}{25cm + 4cm}

113.4483 = 100 + 4 \cdot 2.5 + \frac{25 \cdot 4}{25 + 4}

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Length of Terrestrial Telescope Solution

Follow our step by step solution on how to calculate Length of Terrestrial Telescope?

FIRST Step Consider the formula

L telescope = f o + 4 \cdot f + \frac{D \cdot f e}{D + f e}

Next Step Substitute values of Variables

∴

L telescope = 100cm + 4 \cdot 2.5cm + \frac{25cm \cdot 4cm}{25cm + 4cm}

Next Step Convert Units

∴

L telescope = 1m + 4 \cdot 0.025m + \frac{0.25m \cdot 0.04m}{0.25m + 0.04m}

Next Step Prepare to Evaluate

∴

L telescope = 1 + 4 \cdot 0.025 + \frac{0.25 \cdot 0.04}{0.25 + 0.04}

Next Step Evaluate

∴

L telescope = 1.13448275862069m

Next Step Convert to Output's Unit

∴

L telescope = 113.448275862069cm

LAST Step Rounding Answer

∴

L telescope = 113.4483cm

Length of Terrestrial Telescope Formula Elements

Variables

Length of Telescope

The length of Telescope is the distance between the objective lens and the eyepiece.

Symbol: L_telescope

Measurement: LengthUnit: cm

Note: Value can be positive or negative.

Formulas to find Length of Telescope

Focal Length of Objective

The Focal Length of Objective is the focal length of the lens in front known as the objective lens uses to focus an image.

Symbol: f_o

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Focal Length of Objective

Focal Length of Erecting lens

The Focal Length of Erecting lens is placed between the objective and eyepiece lenses of an astronomical telescope.

Symbol: f

Measurement: LengthUnit: cm

Note: Value can be positive or negative.

Formulas to find Focal Length of Erecting lens

Least Distance of Distinct Vision

The Least Distance of Distinct Vision (LDDV) is the closest someone with "normal" vision (20/20 vision) can comfortably look at something.

Symbol: D

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Least Distance of Distinct Vision

Focal Length of Eyepiece

The Focal Length of Eyepiece is the distance from the principal plane of the eyepiece where parallel rays of light converge to a single point.

Symbol: f_e

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Focal Length of Eyepiece

Other Formulas to find Length of Telescope

Go Length of Terrestrial Telescope when Image Forms at Infinity

L telescope = f o + f e + 4 \cdot f

Other formulas in Terrestrial Telescope category

Go Magnifying Power of Terrestrial Telescope when Image Forms at Least Distance of Distinct Vision

M = (1 + \frac{f e}{D}) \cdot \frac{f o}{f e}

Go Magnifying Power of Terrestrial Telescope when Image Forms at Infinity

M = \frac{f o}{f e}

How to Evaluate Length of Terrestrial Telescope?

Length of Terrestrial Telescope evaluator uses Length of Telescope = Focal Length of Objective+4*Focal Length of Erecting lens+(Least Distance of Distinct Vision*Focal Length of Eyepiece)/(Least Distance of Distinct Vision+Focal Length of Eyepiece) to evaluate the Length of Telescope, The Length of Terrestrial Telescope when Image Forms at Least Distance of Distinct Vision is the sum of the focal length of the objective lens, the focal length of the eye-piece lens, and the focal length of the lens placed between the objective and eye-piece. Length of Telescope is denoted by L_telescope symbol.

How to evaluate Length of Terrestrial Telescope using this online evaluator? To use this online evaluator for Length of Terrestrial Telescope, enter Focal Length of Objective (f_o), Focal Length of Erecting lens (f), Least Distance of Distinct Vision (D) & Focal Length of Eyepiece (f_e) and hit the calculate button.

FAQs on Length of Terrestrial Telescope

What is the formula to find Length of Terrestrial Telescope?

The formula of Length of Terrestrial Telescope is expressed as Length of Telescope = Focal Length of Objective+4*Focal Length of Erecting lens+(Least Distance of Distinct Vision*Focal Length of Eyepiece)/(Least Distance of Distinct Vision+Focal Length of Eyepiece). Here is an example- 11344.83 = 1+4*0.025+(0.25*0.04)/(0.25+0.04).

How to calculate Length of Terrestrial Telescope?

With Focal Length of Objective (f_o), Focal Length of Erecting lens (f), Least Distance of Distinct Vision (D) & Focal Length of Eyepiece (f_e) we can find Length of Terrestrial Telescope using the formula - Length of Telescope = Focal Length of Objective+4*Focal Length of Erecting lens+(Least Distance of Distinct Vision*Focal Length of Eyepiece)/(Least Distance of Distinct Vision+Focal Length of Eyepiece).

What are the other ways to Calculate Length of Telescope?

Here are the different ways to Calculate Length of Telescope-

Length of Telescope=Focal Length of Objective+Focal Length of Eyepiece+4*Focal Length of Erecting lens

Can the Length of Terrestrial Telescope be negative?

Yes, the Length of Terrestrial Telescope, measured in Length can be negative.

Which unit is used to measure Length of Terrestrial Telescope?

Length of Terrestrial Telescope is usually measured using the Centimeter[cm] for Length. Meter[cm], Millimeter[cm], Kilometer[cm] are the few other units in which Length of Terrestrial Telescope can be measured.

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Length of Terrestrial Telescope Formula

​GoLength of Terrestrial Telescope when Image Forms at Infinity Formula

Length of Terrestrial Telescope Example

Length of Terrestrial Telescope Solution

Length of Terrestrial Telescope Formula Elements

Other Formulas to find Length of Telescope

Other formulas in Terrestrial Telescope category

How to Evaluate Length of Terrestrial Telescope?

FAQs on Length of Terrestrial Telescope

Variable Name

GoLength of Terrestrial Telescope when Image Forms at Infinity Formula