While viewing experiences differ from person to person, but there are some common features that every stargazer agrees upon. Starting from very basic accommodations, to very important features, these are the top four important features that all telescopes should have.
The bigger the diameter of the telescope lens, the higher the resolution. While the bigger diameter is better, it is also more expensive. Instead, start with a telescope with a diameter of 100 mm. They are inexpensive, and easier to manage for beginning stargazers.
Another important aspect is the telescopes magnification. A good rule of thumb is to multiply the telescope’s diameter by 2.5. That is the maximum magnification for that telescope. Higher magnification doesn’t always result in a better viewing experience. When the magnification is very high, it is harder to keep stars in view and will require additional equipment, which means more money.
While the eyepiece is not the only important part of the stargazing experience, it will cause irritation in the future. Eye relief can sometimes prove really vital. Eye relief is the distance needed to be from the eyepiece to see clearly. If it is only possible to see anything at a very close distance, then that will get irritating for the eye.
This is again pretty simple. The bigger the mount, the more stable the telescope. While it is not much of a problem with most telescopes, the smaller mounts add more motion to the telescope, making the viewing experience more hazy.