Length of Terrestrial Telescope Solution

STEP 0: Pre-Calculation Summary
Formula Used
Length of Terrestrial 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)
Ltt = fo+4*f+(D*fe)/(D+fe)
This formula uses 5 Variables
Variables Used
Length of Terrestrial Telescope - (Measured in Meter) - Length of Terrestrial Telescope is the distance from the objective lens to the eyepiece lens in a refracting telescope used for land observation.
Focal Length of Objective - (Measured in Meter) - Focal Length of Objective is the distance between the objective lens and the point where the object is in focus in a microscope or telescope.
Focal Length of Erecting lens - (Measured in Meter) - Focal Length of Erecting lens is the distance between the lens and the point where it focuses light in a microscope or telescope.
Least Distance of Distinct Vision - (Measured in Meter) - Least Distance of Distinct Vision is the minimum distance at which the human eye can distinguish two points as separate in microscopes and telescopes.
Focal Length of Eyepiece - (Measured in Meter) - Focal Length of Eyepiece is the distance between the eyepiece lens and the point where the image is formed in a microscope or telescope.
STEP 1: Convert Input(s) to Base Unit
Focal Length of Objective: 100 Centimeter --> 1 Meter (Check conversion ​here)
Focal Length of Erecting lens: 5.5 Centimeter --> 0.055 Meter (Check conversion ​here)
Least Distance of Distinct Vision: 25 Centimeter --> 0.25 Meter (Check conversion ​here)
Focal Length of Eyepiece: 4 Centimeter --> 0.04 Meter (Check conversion ​here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ltt = fo+4*f+(D*fe)/(D+fe) --> 1+4*0.055+(0.25*0.04)/(0.25+0.04)
Evaluating ... ...
Ltt = 1.25448275862069
STEP 3: Convert Result to Output's Unit
1.25448275862069 Meter -->125.448275862069 Centimeter (Check conversion ​here)
FINAL ANSWER
125.448275862069 125.4483 Centimeter <-- Length of Terrestrial Telescope
(Calculation completed in 00.004 seconds)

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Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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Terrestrial Telescope Calculators

Length of Terrestrial Telescope
​ Go Length of Terrestrial 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)
Magnifying Power of Terrestrial Telescope when Image Forms at Least Distance of Distinct Vision
​ LaTeX ​ Go Magnifying Power of Telescope = (1+Focal Length of Eyepiece/Least Distance of Distinct Vision)*Focal Length of Objective/Focal Length of Eyepiece
Length of Terrestrial Telescope when Image Forms at Infinity
​ Go Length of Terrestrial Telescope = Focal Length of Objective+Focal Length of Eyepiece+4*Focal Length of Erecting lens
Magnifying Power of Terrestrial Telescope when Image Forms at Infinity
​ LaTeX ​ Go Magnifying Power of Telescope = Focal Length of Objective/Focal Length of Eyepiece

Length of Terrestrial Telescope Formula

​Go
Length of Terrestrial 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)
Ltt = fo+4*f+(D*fe)/(D+fe)

Explain the working of a Terrestrial Telescope?


A terrestrial telescope, also known as an astronomical telescope adapted for land use, works by using a series of lenses or mirrors to magnify distant objects while ensuring the image appears upright. It typically consists of an objective lens, an eyepiece lens, and an erecting lens (or prism). The objective lens captures light from a distant object and forms an inverted image within the telescope.

How to Calculate Length of Terrestrial Telescope?

Length of Terrestrial Telescope calculator uses Length of Terrestrial 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 calculate the Length of Terrestrial Telescope, Length of Terrestrial Telescope formula is defined as the total length of a terrestrial telescope, which is the sum of the focal length of the objective lens, four times the focal length of the eyepiece lens, and the ratio of the diameter of the eyepiece lens to the sum of the diameter and focal length of the eyepiece lens. Length of Terrestrial Telescope is denoted by Ltt symbol.

How to calculate Length of Terrestrial Telescope using this online calculator? To use this online calculator for Length of Terrestrial Telescope, enter Focal Length of Objective (fo), Focal Length of Erecting lens (f), Least Distance of Distinct Vision (D) & Focal Length of Eyepiece (fe) and hit the calculate button. Here is how the Length of Terrestrial Telescope calculation can be explained with given input values -> 12544.83 = 1+4*0.055+(0.25*0.04)/(0.25+0.04).

FAQ

What is Length of Terrestrial Telescope?
Length of Terrestrial Telescope formula is defined as the total length of a terrestrial telescope, which is the sum of the focal length of the objective lens, four times the focal length of the eyepiece lens, and the ratio of the diameter of the eyepiece lens to the sum of the diameter and focal length of the eyepiece lens and is represented as Ltt = fo+4*f+(D*fe)/(D+fe) or Length of Terrestrial 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). Focal Length of Objective is the distance between the objective lens and the point where the object is in focus in a microscope or telescope, Focal Length of Erecting lens is the distance between the lens and the point where it focuses light in a microscope or telescope, Least Distance of Distinct Vision is the minimum distance at which the human eye can distinguish two points as separate in microscopes and telescopes & Focal Length of Eyepiece is the distance between the eyepiece lens and the point where the image is formed in a microscope or telescope.
How to calculate Length of Terrestrial Telescope?
Length of Terrestrial Telescope formula is defined as the total length of a terrestrial telescope, which is the sum of the focal length of the objective lens, four times the focal length of the eyepiece lens, and the ratio of the diameter of the eyepiece lens to the sum of the diameter and focal length of the eyepiece lens is calculated using Length of Terrestrial 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 calculate Length of Terrestrial Telescope, you need Focal Length of Objective (fo), Focal Length of Erecting lens (f), Least Distance of Distinct Vision (D) & Focal Length of Eyepiece (fe). With our tool, you need to enter the respective value for Focal Length of Objective, Focal Length of Erecting lens, Least Distance of Distinct Vision & Focal Length of Eyepiece and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Length of Terrestrial Telescope?
In this formula, Length of Terrestrial Telescope uses Focal Length of Objective, Focal Length of Erecting lens, Least Distance of Distinct Vision & Focal Length of Eyepiece. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Length of Terrestrial Telescope = Focal Length of Objective+Focal Length of Eyepiece+4*Focal Length of Erecting lens
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