# Question: What Magnification Is Most Useful?

## What magnification do you need to see Venus?

The image above gives some idea of what Venus will look like using a 900mm focal length telescope with a 10mm eyepiece and a Barlow lens (180x magnification).

Venus is bright enough to dazzle so the aperture of the telescope may need to be reduced to lessen the glare..

## What magnification do you need to see planets?

Experienced planetary observers use 20x to 30x per inch of aperture to see the most planetary detail. Double-star observers go higher, up to 50x per inch (which corresponds to a ½-mm exit pupil). Beyond this, telescope magnification power and eye limitations degrade the view.

## What does 40x magnification mean?

Total magnification = Objective magnification X ocular magnification. So for 10X objective and 10X ocular, Total magnification = 10 X 10 = 100X (this means that the image being viewed will appear to be 100 times its actual size). For a 40X objective and 10X ocular, Total magnification = 10 X 40 = 400X.

## What is a good magnification for a telescope?

A useful rule of thumb is that the maximum magnification your telescope can handle is around 50 times the telescope’s aperture in inches. Any higher and the image gets too dim and blurry. So, a 6 inch scope can magnify up to 300x, while an 8 inch scope can magnify 400x.

## What can you see with 100x magnification telescope?

Even giant Jupiter is a small disk in the eyepiece, so for planets the lowest useful magnification is 100x or so, and the maximum is whatever the atmosphere and your telescope will allow. Jupiter, Saturn, Mars, and Venus are all bright enough that you can push the power fairly high without the image becoming too dim.

## What magnification do I need to see the rings of Saturn?

Saturn’s rings should be visible in even the smallest telescope at a magnification of 25 times. A good 3-inch scope at 50x magnification will show the rings as distinctly separate from the ball of the planet. The rings are currently tilted about 19° from our line of sight, less than in recent years.

## What magnification do you need to see Jupiter?

Great seeing conditions and a very dark night are must-haves. After that, you’ll need to make use of at least 100x magnification and probably >150x to have a chance of seeing it. The very best opportunities come when Jupiter is at opposition because it is closer, giving a much larger target for us to see.

## Is 70mm telescope good?

A 70mm telescope is a great starting point for beginners as well as more intermediate astronomers. You can have a decent view of almost all of the prominent objects in the night sky seen from the earth.

## Can you see Venus with binoculars?

Yes. Mars, Venus, Jupiter, Saturn, and sometimes Uranus can all be visible with a good pair of binoculars. Mercury, Venus, Mars, Jupiter and Saturn are easy to see.

## What does 10x magnification mean?

The size of a magnifier is given as two figures, e.g. 10X18. The first figure is the magnification, the second figure is the diameter of the lens in millimetres. So 10X18 means that the magnification is 10X (makes items appear ten times larger than normal) and the lens size is 18mm diameter.

## How do you calculate most useful magnification?

Magnification (power): The amount that a telescope enlarges its subject. 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).

## Can I see Venus through a telescope?

Although any telescope (or steadily-held binoculars) will allow the phases of Venus to be seen, the planet is a notoriously difficult one to observe, for three main reasons. … Thirdly, the planet itself is permanently cloaked in thick cloud, so its surface features are never visible through telescopes.

## What magnification do you need to see bacteria?

In order to actually see bacteria swimming, you’ll need a lens with at least a 400x magnification. A 1000x magnification can show bacteria in stunning detail.

## What magnification do you need to see Mars?

Generally, a magnification of 30-50x the aperture (in inches) works well on nights of average-to-good seeing. For example, if you have a 4-inch telescope, try 120x to 200x. If you have an 8″ scope, try 240x to 400x.

## What does 50x magnification mean?

Telescope Magnification Power A telescope’s magnification power is found by dividing the focal length of the telescope’s lens by the focal length of the eyepiece. For example, a 30 mm eyepiece used on a 1,500 mm focal length telescope would have a magnification power of 50x (1,500 / 35 = 50).