Is 50 mm telescope good?

50mm (2 in) telescopes are the most basic, entry-level, budget telescopes on the market. They are mostly targeted at kids and some of them could even fall into the toy category. We generally don’t recommend 50mm telescopes unless you are on a very tight budget or you are looking for a gift for a 5-year-old.

Is a 20mm telescope 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.

How much magnification do you need to see Mars?

To see much detail on Mars you would need in excess of 100x magnification (same for Saturn, less for Jupiter), and ideally a lot more. Your scope should be able to manage 100x. However the Jones Bird design is known to be difficult to align (collimate) properly, so even with that magnification, you may just see a blur.

Is a 10mm or 20mm eyepiece more powerful?

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. A 10mm eyepiece would be low power on a short-focal-length scope but high power on a long-focal-length scope.

How big of a telescope do you need to see Pluto?

eleven inches
Observing Pluto is the ultimate challenge. It is smaller than Earth’s moon and is approximately 3.3 billion miles away from us. You will need a large aperture telescope of at least eleven inches.

What can you see with a small telescope?

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. Although they won’t be able to see them in the greatest of detail, you can easily see things like the rings of Saturn, as well as most nebulae.

How to choose a telescope with a 100mm aperture?

That means that if you have a telescope with a 100mm aperture, you would calculate it by doing: The max. useful magnification would be 500x. If your main objective when buying a telescope is to see planets, here are some general rules that will help when you select one.

What size telescope do I need to see planets?

The max. useful magnification would be 500x. If your main objective when buying a telescope is to see planets, here are some general rules that will help when you select one. Start by choosing the biggest aperture your budget allows for. Pick the one with the larger focal length.

How many stars can you see with a 250mm telescope?

Under truly dark skies – where the milky way is bright, highly structured and you can barely resolve the constellations due to the sheer number of stars – a large 250mm telescope will show you 5-7 thousands deep sky objects, with hundreds of them showing a fair amounts of details (as in previous illustrations).