The major advantage of the telescope is that it can be used both in astronomy and for terrestrial observations. In addition, we generally find small glasses at low prices for beginners, they are very simple to use since unlike a telescope they do not require collimation (we will come back to this).
However, you should know that for equal diameter and performance, a telescope will be much more expensive than a telescope due to the complexity of manufacturing lenses. Again with equal diameter, a telescope is much lighter than a telescope. In general, the image quality obtained is also better with a telescope, the telescope is indeed subject to chromatic aberration (a deterioration in image quality).
For these different reasons, and although our comparison at the end of the article contains a slight choice of astronomical glasses to start with, our dossier will mainly focus on the telescope, an instrument with which it is possible to observe a greater diversity of celestial object for a relatively reasonable price when looking to start. For the Best Telescope For Viewing Planets And Galaxies now you can get ample options.
Unlike the telescope, the telescope does not use a set of lenses to focus the light, but a set of mirrors. Newtonian telescopes are the most widespread, they consist of a system comprising two mirrors, a primary mirror placed at the bottom of the optical tube and a secondary mirror inclined at 45 ° which makes it possible to return the focal image to 90 ° and offer a position d comfortable observation.
The essential parameters
Of course, the choice of a telescope depends first of all on what you want to observe. If you simply wish to observe the Moon and its craters or planets such as Mars or Jupiter, a small astronomical telescope may very well fill you, even if your place of observation would be in town and you would be unable to move away frankly from light pollution areas.
However, starting from a similar rate, you will be able to observe much less bright objects such as distant galaxies or nebulae, but also to enjoy a higher level of detail.
But then how to choose and what are the essential parameters to take into account?
The diameter of the objective
The most important parameter is undoubtedly the diameter of the objective, in other words the opening of the tube, which ultimately corresponds to the surface of the mirror (or lens) of a telescope. This characteristic is decisive in the choice of an instrument for the simple reason that the larger the aperture, the more the telescope will be able to collect a maximum of light.
Clearly: the larger the opening, the more you will be able to extend the possibilities of observation to a multitude of celestial objects.…