# What is the magnification of a Kepler telescope?

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The magnification of both of these instruments is the ratio of the objective focal length to the eyepiece focal length. For these telescopes the magnification is 700mm/50mm = 14X.

## What was the magnification of Galileo’s telescope?

Galileo’s Telescopes

The basic tool that Galileo used was a crude refracting telescope. His initial version only magnified 8x but was soon refined to the 20x magnification he used for his observations for Sidereus nuncius. It had a convex objective lens and a concave eyepiece in a long tube.

## What is the highest magnification of a telescope?

The highest magnification of a telescope is 50x per inch of aperture.

## What is the purpose of a Keplerian telescope?

Keplerian telescope, instrument for viewing distant objects, the basis for the modern refractive telescope, named after the great German astronomer Johannes Kepler.

## How do you calculate the magnification of a Keplerian telescope?

The telescope magnification of the Keplerian telescope follows from simple geometry and trigonometry with the small angle approximation for the tangent function. The derivation is given in the diagram itself. The formula for telescope magnification is M = -f_p/f_e .

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## What type of telescope is the Hubble Space telescope?

Hubble is a Cassegrain reflector telescope. Light from celestial objects travels down a tube, is collected by a bowl-like, inwardly curved primary mirror and reflected toward a smaller, dome-shaped, outwardly curved secondary mirror.

## What is Galileo telescope made of?

Galileo was a natural philosopher, astronomer, and mathematician who made fundamental contributions to the sciences of motion, astronomy, and strength of materials and to the development of the scientific method. He also made revolutionary telescopic discoveries, including the four largest moons of Jupiter.

## What can you see with a 100mm telescope?

What Can You Expect From 100mm Telescopes? (With Photos)

• The maximum magnitude of a 100mm telescope is 13.6. For reference, the Moon has a magnitude of -12.74 and Mars has a magnitude of -2.6. …
• The Moon. The Moon looks amazing in these telescopes. …
• Mars. …
• Venus. …
• Jupiter. …
• Saturn and Neptune. …
• Pluto and Dwarf Planets. …
• Mercury.

## What can you see with a 60x telescope?

60mm (2.3in) to 70mm (2.8in) aperture or equivalent

With telescopes of this aperture size, you’ll be able to see the moon and her craters, as well as some of the bigger planets.

## What can you see with a 70mm telescope?

The colorful bands and belts of Jupiter, as well as its four major moons, and the rings of Saturn are clearly visible in a 70mm telescope. Mars, Venus and Mercury are visible in a small scope as well, but are extremely reluctant to give up any detail because of their overwhelming brightness.

## Why is Keplerian telescope inverted?

Keplerian telescope

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It uses a convex lens as the eyepiece instead of Galileo’s concave one. The advantage of this arrangement is that the rays of light emerging from the eyepiece are converging. This allows for a much wider field of view and greater eye relief, but the image for the viewer is inverted.

## Which is better a refractor or reflector telescope?

If you are interested in astrophotography, purchasing a refractor is a better option because of it’s specialized optic design that captures deep space objects like galaxies and nebulae. If you are interested in brighter celestial objects like the Moon or planets or a beginner, a reflector telescope is ideal.

## Did Kepler use telescopes?

One of such telescopes was famous Keplerian Telescope. … With the telescope in his hand, Kepler managed to come to several large discoveries.

## How many telescope eyepieces do I need?

Typically, a collection of four – 6mm, 10mm, 15mm and 25mm – will cover most observing requirements. A good selection of eyepieces will serve you well and give you options depending on what you want to observe.

## How much magnification do you need to see Jupiter?

Generally a magnification of 30-50x the aperture of your telescope (in inches) works well on nights of average seeing. So if you have a 4-inch telescope, try 120x to 200x. If you have razor sharp optics and steady sky, you can get away with even more magnification.

## How do you calculate the magnification of a reflector telescope?

It’s equal to the telescope’s focal length divided by the eyepiece’s focal length. As a rule of thumb, a telescope’s maximum useful magnification is 50 times its aperture in inches (or twice its aperture in millimeters).

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