70mm telescope what can you see with

70mm Telescope What Can You See with It?


Stargazing can be a fascinating subject. If you get into it once, you will fall in love with the universe. This is why to understand the universe better; you need a telescope for it. 

Also, being curious about telescopes is very normal. Especially about the maximum capability of a telescope

Like this, the common question is, 70mm telescope, what can you see with it?

You can see most of the planets and stars within the solar system. But you cannot see galaxies through it. Some of them can be quite unclear. But Neptune, Jupiter, and Saturn can be seen in single colors. Furthermore, you can see the stars pretty well if the sky is in favor. 

So, these are the parts of the solar system that can be seen with the help of a 70mm telescope. However, there are varying factors. To know more about this, keep reading!

What is a 70mm Telescope? 

Well, a telescope is an optical instrument. Astronomers use it to see objects that are far away. Curved mirrors gather and focus light from the night sky in most telescopes. 

And the aperture of the telescope is 70mm. In the case of a refracting telescope, the gap refers to the diameter of the objective lens. And it is the diameter of the primary mirror in the case of a reflecting telescope.

Telescopes have different apertures, and they also work according to them. This is why learning to compare the gaps of telescopes helps better understand. 

Here the “mm” indicates millimeters. And in the case of 70mm telescopes, it is equal to 2.7 inches. To know the focal length, you have to look at the label. f/15 should be the label of a 70 mm telescope.

We know the aperture = focal length/ diameter of effective aperture


the diameter of the effective aperture = 15 units 

Aperture = 70mm


Focal length = Aperture x Diameter of effective aperture

                    = 70 x 15

                    = 1050mm

So, the focal length of a 70mm telescope is 1050mm.

It works great for beginners as it is easy to use and cheap. Besides, it is very light in weight and easy to carry around. 

Now you understand the basics of a 70mm telescope. Then, let us get to our next segment!

What Can You See with a 70mm Telescope?

We know the effective magnification of a telescope is near twice the lens aperture in millimeters. That means a 70mm telescope can magnify to 140x max. With this magnification, you get a decent look at the planets through telescopes

But there is no exact answer if you can see every bit of the galaxy clearly or not. The reason is there’re a variety of variables. And they can influence the visuals of stargazing. 

Magnification, weather, focal length, and the quality of the mirrors or lenses are all factors to consider.

A 70mm telescope can easily observe most of the planets in the Solar System. You can visualize the moon as well. But, even if other variables are good to go, the weather remains unpredictable. 

Do not miss the chance if you can get a clear night sky. With a clear night sky, you can make the most of your 70mm telescope. 

Well, it’s time to know objects that can be observed with a 70mm telescope. The condition is to have a clear night sky. 

Within the Solar system

  • Saturn and its rings 
  • The moon with its craters. 
  • Mercury phases. 
  • Polar caps and the dark surface of mars.
  • Moons of Jupiter with shadows.
  • Cloud belts upon Jupiter.
  • 4-5 Saturn moons. 
  • A quite unclear Uranus and Neptune. 
  • Sunspots with the help of an aperture filter. 
  • Rilles of the moon. 

Stars and nebulas

  • Galaxies that are far away. 
  • Planetary and emission nebulas.
  • The globular clusters.
  • Stars with 11.5 to 12 stellar magnitude
  • Double stars such as Albireo. 

The surface of Mars will be stunning. You should be capable of distinguishing its poles and some of the larger portions. You may be able to differentiate its bars and some larger parts. However, outside the asteroid belt, the planets will be primarily visible in a single color only. 

For instance, Neptune will be unclear and can be seen as a sky-blue dot. On the other hand, Jupiter will be seen as a light or pale yellow dot. Besides, the visible Saturn rings will be the same color as the planet. 

Besides, you can see more if you get a telescope with a higher aperture. So, we can say the gap decides the visual distance of a telescope

Well, we cannot finish this article without recommending the best telescope. Here are the telescopes that will work out great for you!

[2023 Upgraded] Telescopes for Adults Astronomy, 70mm Aperture
Telescope for Kids & Adults – 70mm Aperture

So, these are the telescopes that you can go for. It functions great for both beginners and intermediate stargazers. Trust me; you will not regret it!


Question: Is a 70mm aperture good?

Answer: Well, Many stargazers consider a 70 mm refractor to be good for beginners. Because then a 60mm telescope gathers 36% more light. It is the minimum size for a decent-quality starter refractor telescope. Also, it’s ideal for looking at planets, star clusters, double stars, and lunar details.

Question: What can be seen with a 90mm telescope?

Answer: A 90mm telescope will allow you to see Saturn and its rings and Neptune, Uranus, and Jupiter with its Great Red Spot. You might also expect to observe stars with a stellar magnitude of 12.

Question: What size telescope will I need to see the flag on the moon?

Answer: The flag on the moon measures 125cm in length (4 feet). You will need a telescope with a diameter of about 200 meters to see it. With a diameter of 10 meters, Keck Telescope in Hawaii is the world’s largest telescope. Even the Hubble Space Telescope is just 2.4 meters in diameter.

Wrapping Up

Finally, we have come to an end. Now you understand the concept of “70mm telescope what can you see with”. You can see planets and sometimes stars. But galaxies cannot be seen through it. 

So, good luck with your journey, my friend. Till we meet again!

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