the images are clear and can be focused unlike a refracting telescope witch sags under its own weight causing images to be distorted
Any telescope forms a real image. Otherwise, it's pretty useless as a telescope.
Comments: Refracting telescopes are good these days. They should not sag. Also, Galileo's telescope formed a virtual image, and that wasn't useless.
An important point about the image in a reflecting telescope is that it is inverted, as well as being a real image.
A reflecting telescope forms a real image. This image is produced by the focused light from the primary mirror, which gathers and reflects light to a focal point. The image can be observed directly through an eyepiece or captured by a camera. Depending on the configuration, the image may also appear inverted.
A reflecting telescope.
The telescope you are referring to is likely a refracting telescope. In a refracting telescope, light enters through an objective lens which bends the light rays to a focal point where the image is formed. This type of telescope is commonly used in astronomy and for terrestrial viewing.
an enlarged, upside-down virual image.
The most common type of reflecting telescope produces an inverted image. However, it's possible for a reflecting telescope to produce an upright image, depending on exactly how the optics are arranged.
reflecting
A reflecting telescope only uses lenses in the eyepiece. Light is picked up and an image produced by using a concave parabolic mirror.
It is a reflecting telescope
A refracting telescope is a type of telescope that has a large thin lense at the front and a smaller thicker lense at the end where the eyepiece is. Refracting telescopes use lenses unlike reflecting telescopes that use mirrors to reflect the light. This is a good image of a refracting and reflecting telescope: [See related link]
one which reflects of mirrors
It is a reflecting telescope
A reflecting telescope.