What magnification is 20mm? - Promautengineeringsolutions

For example: using a telescope with a 900 mm focal length with a 20 mm eyepiece will give you 45x magnification. Using the same telescope and eyepiece with a 2x Barlow lens will give 90x magnification.Nov 13, 2014

Is a 20mm eyepiece good?

A 20 mm is useful just as a 13 mm is useful in most any telescope but I'm not sure "all purpose" is a good description. My telescopes range in focal length from under 400 mm to about 2800mm, a 20mm is not a planetary or high power or even mid-power eyepiece in any of them, it's a low to mid power deep sky eyepiece.

What is a 20mm lens good for telescope?

All telescopes have a fixed focal length, just like lenses on a camera. So a 20mm focal length will give you a wider field of view than say a 300mm. You will also notice that with a 300mm you get a larger image of the subject, be it a person or animal or even the moon.

What is the magnification of a 25mm eyepiece?

The eyepiece with the longer focal length say 25mm (low power) used on a telescope with a 1000mm focal length will produce a magnification of 1000 ÷ 25 = 40x.

What is a 20mm eyepiece?

20mm telescope eyepiece excels at low power scanning of open star clusters and viewing of nebulas and larger galaxies. Offers a 52-deg apparent field of view for clear, sharp images of impressively high contrast. Multi-coated for excellent light transmission and bright, clear views.

Is a 10mm or 20mm eyepiece more powerful?

The most important eyepiece characteristic is focal length. … This means that a smaller number on an eyepiece gives a higher magnification. A 10mm eyepiece would provide twice as much magnification as a 20mm eyepiece. It also means that the same eyepiece gives different magnifications on different scopes.

What can you see with a 100mm telescope?

What is the difference between a 10mm and 20mm telescope lens?

Magnification is determined simply by dividing the focal length of the telescope by the focal length of the eyepiece. This means that a smaller number on an eyepiece gives a higher magnification. A 10mm eyepiece would provide twice as much magnification as a 20mm eyepiece.

What can you see with a 700mm telescope?

With a 70mm telescope, you will easily be able to see every planet in the Solar System. You will also be able to take a great look at the Moon and clearly distinguish most of its recognizable features and craters. Mars will look great.