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How about a few? Absorption of light through the lens(es). Chromatic aberation, requiring, preferably, a multiple lens like an achromatic or apochromatic lens which increases absorption. Reflection of light off of the objective lens. Maximum exposure to the elements, causing fogging. Maximum diameter of about 40 inches due to gravity. Difficulty of making at least four optical surfaces to reduce chromatiic aberation (and, these must stay aligned for the life of the telescope). Enough?
What else can I help you with?
What is 3 major functions of a telescope?
The three major functions are brighten, resolve, and magnify.
What was galileo's major accomplishment?
The telescope
Is there a difference between the Hubble space telescope and the Hubble telescope?
a major difference the huble space telescope is in orbit while the regular is in use only on the ground
How does a telescope work?
The telescope has a large diameter concave main mirror with a hole at it's centre.This is known as a Cassegrain configuration. Light from the stars enters the telescope tube and is reflected from the main mirror back up the tube and is then reflected by a small secondary mirror back down through the hole in the main mirror to a focus point behind it. An array of cameras and spectroscopes share the light by means of a beam splitter at the main focus. The cameras digitally process the images they recieive using charge couple devices known as CCD's or electronic eyes. The digital signals are labelled and sent to a microwave dish which transmit the images back to Earth. The telescope is powered by solar cells and has a lens cap that automatically closes whenever the sun is a danger to the sensitive cameras.The telescope is remotely pointed and stabilised using gyroscopes and it is these moving parts that are prone to failure. Despite early problems the Hubble telescope a shuttle space mission was sent to repair the telescope and fit an optical fix known a 'Costar'. The mirror had been ground with an error in the measurement system and ever since has been a fantastic success. It was given major overhaul earlier this year in one of the last shuttle missions and is to be replaced by the James Webb Space Telescope (JWST)in the next decade.
What major advancement did Isaac Newton make?
Newton made many Major advancements,like Law of Universal Gravity, Law of Light composition, Reflective Telescope and Calculus. Newton also pioneered chemistry, under the name of Alchemy.
What the most major difference between telescope and microscope?
A telescope must gather large amounts of light from a dim, distant object; therefore, it needs a largeobjective lens to gather as much light as possible and bring it to a bright focus. Because the objective lens is large, it brings the image of the object to a focus at some distance away
What is their major disadvantage of a telescope in space have over a telescope on Earth?
A major disadvantage? Size. It's expensive to launch a telescope into space, the heavier the object, the more expensive. You have to balance the size (thus weight) of a telescope against the cost, and the capability of the rocket. In astronomy the major factor in a telescopes effectiveness is size. The bigger the telescope, the dimmer the object that can be observed, which often means the more distant objects, and the higher resolution images they obtain. Space telescopes give this all up to be above the atmosphere because the air restricts the resolution of images, as it distorts the light that passes through it. So in exchange for better resolution (not limited by the atmosphere) they give up size. On top of this you have maintenance issues, as it's normally impossible to fix you have to have simpler, more robust (and expensive) instruments which can limit what you can do.
What instrument would be used to study light coming from the constellation Ursa Major?
an optical telescope
What is 3 major functions of a telescope?
The three major functions are brighten, resolve, and magnify.
What are the major advantage and disadvantage of concentric diversification?
what are the major advantage and disadvantage of concentric diversification?
What was one major disadvantage for the british army in fighting the revolutionary war?
a major disadvantage was that they sucked at fighting
What was galileo's major accomplishment?
The telescope
What was one major problem with the refractor telescope used bu Galileo?
One major problem with the refractor telescope used by Galileo was sagging lens.
When was the telescope used for astronome?
Galileo was the first to use a telescope for major discoveries, around the year 1610.
What is a major disadvantage of asynchronous transmission?
Major disadvantage of asynchronous transmission is that the transmission lines is idle during the time intervals between transmitting characters.
Is there a difference between the Hubble space telescope and the Hubble telescope?
a major difference the huble space telescope is in orbit while the regular is in use only on the ground
What is the disadvantage of privately owned media?
The major disadvantage is the dependence on advertising revenues to function and make profit.
