Part of Telescope – A telescope can be defined as a visual aid for observing things positioned at a distant location particularly those which are there in the sky.
Every single part of telescope collectively is able to perform all these functions by amplifying lights and also enlarging the shadow. This helps the objects to be seen much clearer and closer.
A telescope is also known as the binocular telescope.
History of Telescope :
Hans Lippershey, who happens to be a sunglass manufacturer based in Middleburg in the Netherlands created a telescope for the first time on 2nd October 1608.
This instrument is able to magnify objects which can be observed even five times bigger the original size.
In 1609, the first telescope which was used in astronomy was invented by Galileo Galilei and it was able to magnify as many as 20 times. He affirmed the some-centered universe theory in 1610.
Isaac Newton was responsible for creating an innovative telescope in 1668 which used mirrors as the lens. Consequently, this discovery had a great impact on the historical background of science.
Following this, during the middle part of the 17th century, an astronomer known as Havelius made a telescope lens that featured a skeleton manufactured from wood. Moreover, it was 46 m in height as well.
Furthermore, a telescope featuring different types of lenses were employed by Huygens who was an astronomer based in Holland. This device consisted of a couple of lenses.
The Yerkes telescope featuring an astounding 101 cm diameter was produced in 1897 in the US and it was the biggest lens telescope on the planet that time.
As of now, the biggest telescope known as Keck telescope is positioned at the peak of the Mauna Kea volcano situated in Hawaii and it has a capability of viewing an area 8 times bigger as compared to any other telescope.
Types of Telescope :
1. Reflector Telescope
This type of telescope makes use of mirrors as an alternative for the lens for capturing light and also reflecting it.
There are several advantages offered by these types of telescopes amongst which perhaps the most notable is the fact that these are manufactured with mirrors which help to stay away from chromatic aberration, a typical problem caused by lenses out there.
Mirrors are also able to produce superior images due to the fact that they reflect wavelengths of all types of lights equally. Their simple design also makes them quite inexpensive and therefore it can easily fit within your budget.
Examples of Reflector Telescope:
Telescopes using mirrors was invented by Sir Isaac Newton in the year 1668, and because of this, it is also known as the Newtonian telescope.
Following this, in the 20th century, several giant reflector telescopes were manufactured like those employed in Hale in Observatium Mount Palomar in California, USA.
Its diameter happens to be 200 inches and was manufactured in the year 1948. Incidentally, it became the biggest reflector telescope on the planet until a few 20 years later.
2. Refractor Telescope
This sort of telescope is made from more than one glass lens as its tool. Its primary intention is to perform the operation of the telescope by means of capturing light.
These can be great for the beginners given that they do not need much maintenance as compared to the reflectors.
Moreover, the lens of this type of telescope is fixed, and therefore there is no possibility for the lens to become misaligned in the long run.
Example of Refractor Telescope:
Reflector telescopes are used on a wide scale at present in astrometry as well as in other types of planetary studies. This will include the measurement of the positions as well as motions of the stars.
You’ll come across some significant examples of reflector telescopes on the planet, for example, the Yerkes Observatory featuring a refractor of 40 inches.
In 1900, the biggest ever refractor telescope was manufactured in Paris for an exhibition as well.
3. Catadioptric Telescope
Simply speaking, a typical catadioptric telescope consists of a combo of mirrors and lenses.
The 2 most typical designs available on the hobby market at present are the Maksutov-Cassegrain telescope as well as the Schmidt-Cassegrain telescope.
Both of these feature a corrector plate at the front which happens to be a lens, a secondary reflector attached to the plate, along with a primary mirror at the back featuring a hole in the middle.
For example, the very first catadioptric telescope was manufactured in the year 1930 by Bernhard Schmidt, a German astronomer.
Parts of Telescope :
1. The Lens
This part of telescope happens to be amongst the most essential components of the device. It consists of a convex lens, field of view, a concave mirror, focusing distance, magnification, as well as resolution.
The lens is responsible for collecting and controlling the light’s movement as well as the view in which the sky is being observed.
2. Telescope Tube
This particular part of telescope consists of the primary mirror. In normal circumstances, the tube happens to be 8 inches in diameter and comes with a cover as well.
This is responsible for improving the focal length setting by controlling the knob. As a result, this component of the telescope is responsible for the functionality of the device to a great extent.
This happens to be a minor telescope that is usually positioned on the primary tube. This part is utilized for locating the primary object which we want to observe.
The finderscope is responsible for locating and directing the telescope towards the main object to get a clearer view.
This is an ocular lens’ component and offers the lock for providing security to the device. It helps to prevent the lens from falling down unintentionally. The eyepiece will likewise improve the view of the object from the lens.
We also refer to this component of the telescope as cradle telescope. It helps in the movement of the device in different directions and sides.
The mounting comes with a knob latitude which helps to indicate the observer latitude’s position.
It is manufactured with as many as 3 stands and helps to keep the telescope properly on its surface.
The tripod helps to support the device in any position whether it is slanted, inverted, or straight. It helps the observer to move the telescope in different directions easily.
7. Half Pillar
This component of a telescope is typically employed for either raising or lowering the mounting position of the device.
This will help to set the telescope in the desired position on the tripod so that it is able to function according to one’s preferences.
How can you work a telescope?
A reflector telescope is going to make use of a concave mirror as well as a concave mirror too.
The main lens, which is a significant part of telescope, will be gathering the light and the shadows and then deliver them to the eyes’ retina by means of media refraction.
There happen to be five media eye refractions out there which will consist of the entrance of light as well as shadow that will first arrive to the cornea, and then to different parts of the eye such as the aqueous humor, the pupil, the vitreous body, plus the retina.
Following this, the shadow on the eye’s retina is going to be transferred to the brain by means of the optical nerve and finally, the image can be interpreted properly.