New Telescopes for Beginners

!9# New Telescopes for Beginners

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There are two basic types of telescopes: one in the reflector and the other is the refracting telescope. It is important to know the difference so the you can choose what is correct for your circumstances.

The first telescopes were the refractor type. A man named Lippershey was tinkering with eyeglass lenses and noticed that when he place one lens in front of the another the object resting just beyond the lenses were magnified slightly.

He soon built the first spyglass, the first optical telescope which focused light into the human eye. It also used two lenses. The first lens (the objective lens) collects and refracts (bends) incoming light, focusing it into a tiny image.

The secondary lens, placed directly in front of the first, magnifies the image, making it look larger to the eye.

This new invention was used as a novelty at parties and later by army officers to observe enemy troop movement up close. No one thought about using it to study the skies.

Galileo is best known for taking this invention, improving on it with more magnification, and turning it upwards to observe astronomy. He was the first to see other planets.

Telescopes were not only getting larger and more powerful the quality of the lenses were improving rapidly making images sharper.

A Scottish mathematician named James Gregory in the 1660s tried building a telescope that used mirror instead of a lens to gather light.

Isaac Newton picked up on the idea, came up with a simpler and better reflecting telescope, or a reflector. Light enters the telescope's tube from an opening in the front. The light travels to a mirror located in the back and bounces off.

Because the mirror curves inward slightly the reflected light comes together and forms a small image in the center of the scope.

To get the best viewing for your money your best choice would probably be a good pair of binoculars (two telescopes for the price of one). After that reflector telescopes are great for beginners. When you have more experience move up to a refractor telescope.

Happy viewing, mary

written by marybethc visit at http://www.newtelescopesforbeginners.com

New Telescopes for Beginners

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Tips on Choosing a Children's Telescope For Your Special Young Astronomer

!9# Tips on Choosing a Children's Telescope For Your Special Young Astronomer

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If your child is ready to begin exploring the heavens, then you may be in the market for a children's telescope. There are many available today from several manufacturers, and finding a quality telescope for kids is really not difficult. However there are some key considerations when shopping for you a telescope for a child.

First, its important to know the types of telescopes available. You'll mainly hear about two type: reflector and refractor. A reflector telescope uses a mirror to capture light and images and magnify it for view. A refractor telescope instead uses lenses to magnify whatever object you are looking at to make it easier to view than with the naked eye. You'll find both refractor child telescopes and reflector child telelscopes, and both are perfectly good solutions.

In terms of costs, expect to pay between and 0 for a quality children's telescope. The cost range is generally dependant on the quality and the size (and size is relative to magnification). Childrens telescopes are usually smaller, intermediate models of regular telescopes as opposed to toys, and the good manufacturers make quality telescopes even at the low end. If you want more magnification, the ability to see fainter objects, or more features like automated tracking you can pay up to 0.

The next factor to consider (and this usually correlates to cost) is the size of the kids telescope. This basically defines the size of the light gatherer and the faintness of the objects you'll be able to see. Beginning astronomers will do fine with a minimum of a 70 mm refractor telescope, but you can up to as much as 114 mm reflector.

Magnification is also important when shopping a telescope for children. The magnification of your telescope will depend on 2 factors, the size of the light gathered mentioned above, and the magnification of the eyepiece. The eyepiece is what you should consider when shopping, as its often wise to get a childrens telescope with 2 eyepieces (one for low level and one for high level).

The other part of a telescope that is important is the mount. The mount ensure that the telescope stays stable and firm when viewing objects. Keep in mind, that staying focused and centered on that star you are observing will be tough if your telescope is shaking and moving. Make sure your telescope has a sturdy mount for the ground or a table top.

Finally, don't forget that you'll be setting up and transporting your starter telescope a lot. You want to choose something that is lightweight, easy to transport, easy to set-up, and durable. Most children's telescopes have a little extra durability built in to them, but just be sure its something you think will hold up to your child's typical activity.

Buying your child's first telescope shouldn't be difficult if you keep these important considerations in mind. Then you can turn them loose to the stars, planets, and galaxies to explore.

Tips on Choosing a Children's Telescope For Your Special Young Astronomer

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Brand : Meade | Rate : | Price :
Post Date : Oct 12, 2011 07:20:36 | N/A

This rare and hard to find Meade giant binocular has a popular and useful magnification of 11x80. The precise optical quality, superior clarity and light gathering and the features of this binocular make it a favorite for celestial and terrestrial observers. This giant 80mm binocular features the following quality characteristics: BAK-4 high transmission prisms for maximum brightness, Fully Multicoated to increase light transmission, image contrast, resolution and sharpness across the field, A sturdy central hinged bridge support near the objective lens provides additional support and helps maintain the precise optical alignment of each binocular, Fully rubber armored protected, Includes a set of Standard rubber roll-down eyecups that roll back for eyeglass wearers, Precise central focusing, Includes objective and eyepiece caps, Deluxe hard carrying case with heavy-duty AND Tripod adapter ("L" bracket for mounting to a tripod).

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Brand : Celestron | Rate : | Price :
Post Date : Oct 07, 2011 21:15:22 | N/A

CELESTRON 31050 FirstScope 114 Deluxe Telescope

Best value per inch for a telescope! -- FirstScope 114 Features: -- **114mm (4.5") Reflector -- **900mm Focal Length -- **CD-3 Equatorial Mount with setting circles and slow motion -- **Adjustment Cables -- **Sturdy adjustable aluminum tripod with accessory tray -- Weight: 19 lb. -- Standard Accessories Include: -- **1 1/4" 20mm (45x), 10mm (90x) Eyepieces -- **StarPointer Finderscope -- **Equatorial Mount -- **The Sky L1 CD ROM -- This economical telescope provides superb optical systems with smooth tracking. Strict adherence to Celestron's tough quality standards ensures that each telescope performs well. -- The FirstScope 114 yields breathtaking views of the moon, Saturn with kits ring structure, Jupiter and its belts, as well as hundreds of deep-sky objects. Add an optional solar filter and you can observe activity on the sun. -- *Special Handling Charges Apply --

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Brand : Celestron | Rate : | Price : $119.94
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21049 With Free Motor Drive: CES1071 Features: -Telescope. -PowerSeeker collection. -Color: Black. -Material: Aluminum. -127 mm (5'') Newtonian reflector. -3x Barlow lens triples the magnifying power of each eyepiece. -Quick and easy no-tool setup. -Slow motion controls for smooth tracking. -Erect image optics - ideal for terrestrial and astronomical use. -Fully coated glass optical components with high transmission coatings. -Enhanced image brightness and clarity. -Accessory tray for convenient storage of accessories. -''The Sky'' level 1 planetarium software with 10,000 object database. -Dimensions: 11'' H x 17'' W x 33'' D.

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