The more light that is gathered, the fainter the objects you can view. 10.5 12.0 13.5 14.7 Determine what you want to look at. Certain telescopes are better suited for looking at deep sky objects, like galaxies, versus other telescopes that are designed for looking and planets, the moon, and double stars. These telescopes are great for viewing galaxies and nebulae. Viewing the moon and planets is better in these telescopes.
Magnification is the least important factor in buying a telescope.
This telescope uses a lens to gather light at the front and goes straight though the tube assembly to be focused and magnified at the back. The views are clear and crisp and hold up well under magnification. Best for viewing planets and the moon. The major drawback is its cost. The reflector uses a mirror to reflect light to a secondary mirror, which then directs it to the eyepiece.