A refracting telescope works by bending light with its lenses. It gathers and focuses the light by using the objective lens to make a small image of the object and using the eyepiece lens to magnify the image.Know More
The lens' curvature also influences the quality of the telescope's images. The size of the image that the lens produces is directly related to the lens' focal length. As the focal length increases, the size of the image also increases. This is one of the refracting telescope's disadvantages since a long focal length means a long telescope. Other disadvantages of the refracting telescope include the inability to transmit all the light since some light is lost to absorption or reflection and large lenses that can be difficult to make.
Galileo created the first refracting telescope using a convex primary lens and a concave eyepiece lens. To enable his telescope to produce as clear of an image as possible, Galileo used math to calculate the distance between the lenses. He was able to see only a small part of the sky at any time, and the telescope produced fuzzy images from spherical aberration. This early telescope magnified objects three times, and his later creations were able to magnify objects up to 30 times.Learn more about Astronomy
Light works when photons, which are small packets of energy or units of electromagnetic radiation, travel in electromagnetic waves throughout space. Light makes things visible, enabling organisms to see.Full Answer >
Astrolabes work by presenting users with a graphic interface that makes it relatively easy to compute the positions of the sun, the moon and the stars. Astrolabes can be used for navigation as well as predicting the exact times for sunrise and sunset. Turned on its side, an astrolabe can be used as a mechanical calculator akin to a slide rule.Full Answer >
Tasco provides free online instruction manuals for all of their products. Their telescopes come partially assembled. The tripod needs to be assembled, then the main body of the telescope attached to it. Once the main body of the telescope is on the tripod, the various accessories such as finderscopes and eyepieces need to be attached. The accessories vary slightly by model of telescope.Full Answer >
The Hubble Space Telescope was created to capture detailed images or objects that are too far away to be viewed with conventional telescopes. The Hubble's instruments create images that are far superior to those of terrestrial observatories, which suffer from the effects of atmospheric distortion.Full Answer >