What can you see with a refractor telescope with a 60 to 70 mm aperture?
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If you have come this far it is because you are interested in astronomy and want to know a little more about the differences between each telescope and what can be seen with them. But there are many telescopes of different brands on the market. In this article we are going to focus onrefracting telescopeswith a diameter of 60 to 70 mm, that is, the aperture, and we will explain what you will be able to see depending on their diameter.
HeLevenhuk Blitz 70 BASE refracting telescopeallows you to observe a wide range of astronomical objects. Thanks to the aperture (70 mm) of this telescope, the user can study the Moon in detail, the planets of the Solar System and bright objects in deep space that are diffuse. You can also use it as a powerful spyglass to observe terrestrial landscapes.
The aperture is one of the most important features of a telescope. The larger the aperture, the more light the telescope will collect and the higher its resolution. The latter means that the telescope is capable of showing smaller details.
Refractor telescopes with an aperture of 60 to 70 mm
Telescopes with this aperture diameter are considered telescopes for beginners, and it is the minimum acceptable to begin astronomical observation. The choice between a refractor or reflector will depend on other parameters that we will study in another article.
Refracting telescopes, combined with a suitable set of eyepieces, allow you to observe sunspots (with a solar filter), the phases of Venus, lunar craters (7-10km in diameter), the atmospheric bands of Jupiter and its four main moons, the rings of Saturn and the Cassini Division with good conditions and Uranus and Neptune as faint green stars.
In this case, you can also see binary stars, a pair of stars that the human eye perceives as one in the sky. With this aperture the telescope will be able to see binary stars with an angular separation of 2″ and faint stars with a stellar magnitude of up to 11.5.
But if you like to observe the open sky, with an aperture of 60 to 70 mm you will be able to observe large globular clusters and bright nebulae. Under ideal conditions all Messier objects can be observed.
What is the price of a 60 to 70 mm refractor telescope?
Prices vary greatly depending on the brand, and this is due to some characteristics of each product, for example, the focal length, the included accessories, the construction material and mainly the tripod and mount.
An altazimuthal mount is not the same as an equatorial one, and the materials with which they are built. In products intended for children, some tripods and mounts include plastic parts. It is not recommended to purchase these products for introduction to astronomical observation if you are serious.
Focal length is also another very important parameter that defines the price, but it requires detailed study and we will leave it for another article. The important thing to know is that the longer the focal length, the less you have toenlarge the image with the eyepiece . Therefore, long focal length telescopes allow higher magnifications to be achieved.
In general, refracting telescopes with an aperture of 60 to 70mm have a price between €99 and €250 depending on the characteristics explained above.
The optical system of this refractor telescope with an objective aperture of 60mm and focal length of 700mm is the ideal tool to orient yourself in the sky, to observe the large planets Saturn, Jupiter and Venus, and even reveals, under favorable conditions, known objects from deep space like the Andromeda galaxy.
Easy-to-use refractor, ideal for beginners or children
Allows you to observe the Moon, terrestrial objects and the planets of the Solar System
Fully coated glass optics, images produced are detailed and clear
With an aperture of 70mm, this refractor has a light potential 100 times greater than the human eye and therefore considerably outperforms classic beginner telescopes with a smaller aperture of 60mm. It means that it has a higher resolution and, with its maximum magnification of 140 times, it already provides you with details of the large planets Saturn, Jupiter and Mars. The Moon is also a very interesting object: you can excellently observe the lunar surface with its craters.
70mm Achromatic Telescope for Astronomy Beginners
Easy to handle, transport, use. Azimuth mount
Ideal on planets, the Moon and for terrestrial observation
Very complete pack, includes approved sunscreen and smartphone holder.
An optical tube of the telescope is installed in an equatorial mount, which is excellent for observing space. It takes time to learn how to use the telescope; However, tracking astronomical objects is simple and practical. The bracket moves smoothly and easily, the optical tube is reliably and durably connected.
Small refractor with coated glass optics
Extensive kit: two eyepieces, a Barlow lens, a diagonal mirror
Ideal for exploring the planets of the solar system and terrestrial observations
An equatorial mount for easy tracking of celestial astronomical objects
Do you like technology? The StarSense Explorer 70mm aperture telescope from Celestron is an option that does not disappoint. With a finder system that uses your smartphone, it will be easier to find all the objects in the sky. You just have to install the App, put the phone on the support that comes from the factory and the App will guide you to where you decide.
Tips
These are just some examples, within them there are different brands and finishes. If you have a limited budget start with an AZ mount, but if you can afford an equatorial mount or altazimuth mount with fine movement the better.
If what you are looking for is to see galaxies and nebulae, I recommend aReflecting telescopeinstead of the refractor. In the case of choosing a reflecting telescope, I recommend that you start with a telescope with a minimum aperture of 114 mm. I'll talk about reflectors in another post.
