According to scientists, the refracting telescope uses a convex lens which increases the size of an image. The most common use of this telescope is for viewing solar system planets such as Jupiter and Mars.
ocular objective condenser iris diaphragm
The sun's brightness is overwhelming and blocks it out. It can be viewed with a telescope called a Coronagraph or during a total solar eclipse.
Mercury, Venus, Mars, Jupiter, and Saturn are visible from Earth without a telescope. At certain times, for those with excellent vision, Uranus is visible. Some planets are best viewed just before dawn.
A convex lens bends the light that goes through it toward a focal point. The light spreads out again past this focal point. Magnifying glasses are convex lenses. When you use one, the lens bends the light rays so that they come together and focus on the lens within your eye. The light then spreads out as the rays continue past the focal point, and they hit the retina of the eye. The spreading of the light makes the image viewed appear much larger than it really is because it causes the image to take up more space on the retina. Moving the magnifying glass closer or farther away from the eye will change how much the light is spread on the retina. The closer the magnifying glass is to the eye, the bigger the image will appear.
To reflect the image of a large area, a convex mirror would be used. This mirror would normally be in the form of a spherical section, as the security mirrors in a store or mall. A full mirrored sphere could be used, but would not be as efficient.
refracting
Refracting
the lens or system of lenses in a telescope or microscope that is nearest the object being viewed
the lens or system of lenses in a telescope or microscope that is nearest the object being viewed
A reflecting telescope uses a curved mirror to concentrate the light from distant stars, and is a very useful technique. There are very clever techniques and technicians, which can produce a mirror perfect over all its area, to within part of the wavelength of light!! The alternative method of using a glass lens, suffers from various difficulties, such as distortion and loss of light. You do not ordinarily consider focus in an astronomical telescope, for all the stellar objects are essentially at infinity.
The Newtonian Telescope.
Concave mirrors magnify what is viewed in them. That is similar to how convex lenses work (things work opposite with mirrors). So you get a closeup view of your face while you apply makeup.
With a telescope yes.
the scientist viewed the stars with his brand new telescope.
Many historians explain that Galileo was the first person to use a telescope. In 1610 Galileo discovered Saturn's rings. He also observed Jupiter's four moons and viewed the different phases of Venus. This lead to the study of sunspots and various celestial activities. Even though Galileo is credited with being the first to make practical improvements and enhancements to the use of the telescope, he was not the inventor, and therefore not the first person to use a telescope. That person would be Hans Lippershey. Hans Lippershey was born 1570 in Germany, but was raised in Holland. He invented the first refracting telescope in 1608. A lens maker, he designed this telescope from two lenses and applied for a patent, intending that it would be important for the military. He successfully demonstrated the usefulness of his refracting telescope to the military.
Convex
By using a Reflective telescope the viewer sees the image of a normal telescope, reflected on a mirror, which is viewed through a microscope, by doing this the telescope doubles it's viewing ability