The relationship of humans with stars is as old as our ability to think and ask questions. As a human species, our observing power is so limited that we see the stars as round shining dots in the sky at night. In reality, those stars are way bigger than the Earth. But, with the advent of telescopes, it has become easier to explore the vast universe in which we exist. Are you hoping to buy the best telescope online for observing the fascinating and enlightening aspects of the universe? If yes, then this article will help you to buy a suitable one for yourself!
Not only this, but telescopes have paved the way for better astronomy as well.
It doesn’t matter if you are going to buy your first, second, or fifth telescope, because you have to consider some things to make the best choice. In this article, you will get to know about the types of telescopes and what things you should keep in mind while buying a telescope online.
So without further delay. Let’s hop into it!
Things You Should Consider While Buying a Telescope Online
You should consider the following things while buying a telescope online:
- Type of Telescope You Want
- Magnification Power
- Focal Ratio
- Aperture Size
- Telescope Mount
Type of Telescope You Want
Telescopes come in different designs and sizes. Following are the most common types of telescopes people usually use:
- Refractor Telescope:
The refractor telescope works on a principle of refracting or bending the light to form an image. It is a bit expensive but best for those who are new to the field because it is easy to use and set up.
- Reflector Telescope:
The reflector telescope uses the mirrors to reflect the light and form an image on the eyepiece. These telescopes are highly cost-effective as they work on the reflecting principle using mirrors.
- Dobsonian Telescopes:
The Dobsonian Telescope is just like a reflector telescope, but it is relatively large and sits on top of a sturdy mount. It is a good choice for beginners, as it is fairly large and cost-effective.
- Maksutov-Cassegrain Telescopes:
The Maksutov-Cassegrain Telescope is actually a “catadioptric telescope,” which means both lenses and mirrors are used in this telescope for making an image. It is portable and more like a powerful telescope compressed in a small package.
Certainly, there are some other types of telescopes as well. But these telescopes are best for beginners who are willing to buy telescope online.
“Five hundred-times magnification” – sounds impressive, right?
But, keep in mind that the best telescope is never about the magnification power. A high magnification power telescope makes an objector larger, which in turn spreads the light over a large area and makes the image look fainter in the eyepiece.
So, whenever you see something like “a high magnification power telescope for sale,” think twice before making the purchase. Because as I said, a good telescope is not about the magnification power.
Moreover, high-powered telescopes have some specific requirements for the eyepieces as well.
A Good Choice of Eyepieces
Every new telescope comes with at least one eyepiece. You will see that an eyepiece is observed by millimeters with smaller numbers indicating higher magnification power. As a beginner, a 25-millimeter eyepiece will be enough and appropriate for you.
Although a higher magnification power eyepiece provides you with more details, it makes it usually challenging to keep an object in view. For that, you may need a motorized mount to keep the view steady.
The choice of high and low power eyepiece depends on the purpose of your use.
Suitable Focal Ratio
You can find the focal ratio of a telescope by dividing its focal length by its aperture size. It is the length from the main lens or mirror to the focal point ( where the light converges).
For example, a telescope will have a focal ratio of f/10 if the size of its aperture is 4.5 inches and a focal length of 45 inches.
A higher focal ratio means a higher magnification power and image size, but a lower focal ratio means better image quality. Typically, a focal ratio of less than f/7 is considered as best for a quality image.
Suitable Aperture Size
If you are looking for the best telescope online, you should know that aperture size is the right key to a telescope’s power. In simple words, the aperture of a telescope is the diameter of either the objective mirror of a reflector or the objective lens of a refractor.
The size of an aperture is directly proportional to the scope’s ability to gather light. Typically, 60,80, 114, and 152-millimeter reflectors are best for amateurs.
However, it doesn’t mean that you should buy a telescope only because its aperture size is greater. There are a plethora of specifications that you should look into while buying your ideal telescope online. Don’t worry; we are here to guide you in the best possible way!
A Good Telescope Mount
Telescope Mount may look like an add-on accessory, but it is as important as the optics and tube. High-powered telescopes always require a mount because it is difficult to see the steady image of objects.
The essential types of mounts are Altazimuth and Equatorial. However, you may also find a motor mount as well, but it is not necessary. These mounts really help you in focusing on the object.
The Bottom Line
If you are a sky gazer, you can easily see magnified views of enlightening objects in the sky. You are already well-versed in how to buy a telescope online. Ready to make the actual move of getting one? Don’t wait any longer and get your ideal telescope today!
Buying a telescope online is a long-term investment, and you should consider the things mentioned above while buying one for yourself. Rest assured, you won’t regret your decision to get a telescope. It is worth it!