The first thing that you have to consider is the diameter of the objective lens or the mirror is one of the things that is important to look for in a telescope. If you have larger diameter lenses then it would definitely offer high amount of resolution and it can help gather those lights from that of the astronomical objects. The only sad part is that they can offer a costly price. The good size for that of the first telescope is actually roughly around four inches. The bigger one tends to be more expensive and it can be inconvenient too. Those bigger one can work better but of course though it is not shockingly so.
The magnification is not that important and it is often being hyped in the advertising claims for that of the inexpensive telescopes. The purpose of the telescope in astronomy is to be able to collect the light that is from the faint objects and not to magnify it. Most of those visual observing is being done in the power of around 50 and 200.
There will be useless blur that can occur when there is too much magnification that is provided. You can determine the maximum magnification just by simply multiplying the diameter of the objectives in millimeters by 2.5. In the actual practice, in the nights of unusual atmospheric stability, you may be able to make sue that of the higher power but make sure that you will not count onto it. Read this telescope buying guide if you are planning to buy one.
It will be better also that the eyepiece can be comfortable which means it can be close to the eyes so that it will clearly see the object. If the eye relief can be very small then you will need to bring the eye closer to that of the eyepiece, and it will be but impossible for you to be able to observe for a span of more the few seconds each time. You can click here for more info.
Make sure that you will also look for those steady mount for the telephone since the shaky and the unstable one can only ruin that of your observance of the object. Thus, in general, if ever that you see that it is more massive that the mount would look like, the better that it will perform or it can offer a steady mounting. When you will be in doubt, then you need to spend more of your time onto the mount of the telescope. Learn more here : https://www.huffpost.com/entry/telescope-history-astronomers-photos_n_3076830.