Submit Articles A Collection of Informative and Interesting Articles  

Important Features of a Good Telescope

BY: Deena David | Category: Entertainment | Submitted: 2010-04-27 08:48:11
       No Photo
Article Summary: "Telescopes are very useful for every astronomer. There are some features that every telescope should have and they are listed here..."

Share with Facebook Share with Linkedin Share with Twitter Share with Pinterest Email this article

A telescope is an instrument designed for the observation of remote objects by the collection of electromagnetic radiation. Telescopes can make things look bigger and they also help astronomers to see things that are very faint. A good telescope must have desirable features which make its use achieve the purpose for which it was intended.

Important features of good telescope:

An important feature of a good telescope is that, it must have good optics. This directly relates to the telescope's ability to collect light. The telescope must be able to aid in good viewing of the objects that are being viewed.

Another important feature of a good telescope is its maintainability. A good telescope must be easy to maintain. Spare parts must be available in case a part breaks down. There must also be support in terms of technical and training for a good telescope. It must also be easy to upgrade by just adding new parts, for a wide range of scientific usage.

The size of the aperture

The aperture size is another feature to look out for in a telescope. This is the diameter of its main lens or mirror. A large aperture collects more light and produces a better-focused image. The aperture size of the telescope must be chosen depending on what the telescope is being used for. When using a 4-inch telescope you will see star clusters as fuzzy spheres of light. If you use a 6-inch telescope, the fuzzy spheres become individual faint stars. With a 12-inch telescope the stars become clearly defined.

The wavelength of a telescope

The wavelength is another feature to look out for in a good telescope. The wavelength is an indication of how well the mirror or lens was ground compared to an ideal surface. While the absolute minimum acceptable wavelength is one-fourth, good telescopes generally have wavelength of one-eighth or less. Wave numbers are expressed as fractions of a wavelength. Also, the overall performance of the telescope is an accumulation of the wavelengths of each optical component. For example, a telescope with two mirrors (each with a one-eighth wave number) will have an overall wave error of one-fourth.

A good telescope must have good magnification per inch of aperture. For best viewing, the maximum magnification of a telescope should be no greater than 50x per inch of aperture. If you have a 3-inch telescope, 150x should be its maximum magnification. For a 4-inch telescope, 200x should be its maximum magnification. Magnification beyond the range of 50x per inch results in fuzzy imaging.

The cost of a good telescope must match its features. In buying a telescope, there is the need for some form of cost benefit analysis. The cost includes the acquisition costs as well as maintenance costs. If the costs exceed the benefits, then that is not a good telescope.

User friendly telescopes

A good telescope must be user-friendly. This is very important, as a telescope that cannot be used is useless. An average user must be able to use the telescope after a very short period (ideally two weeks) of learning to use it. It should not take extreme technical knowhow to be able to operate the telescope.

Take your time to look at all these features before purchasing a telescope for your institution or company.

About Author / Additional Info:

Comments on this article: (0 comments so far)

Comment Comment By Comment Date

Leave a Comment   |   Article Views: 4656

Additional Articles:
•   Do we Need Another Captain For Our Team?

•   Tips For Healthy Relationships

•   What Every Person Needs to Know About Hearing Aids

•   The Health Benefits of Using an Antigravity Chair

Latest Articles in "Entertainment" category:
•   My Review of the Book'DARK LADY' by Richard Patterson

•   The Oneira .. It's a Dream Question

•   Million Dollar Arm and Other Feats

•   How to Make Green Living Fun and Beneficial?

•   Stop Running, Take a Pause and Unwind!

•   Typical Gym - Various Types of Individuals

•   Are we Going in the Right Direction?

Important Disclaimer: All articles on this website are for general information only and is not a professional or experts advice. We do not own any responsibility for correctness or authenticity of the information presented in this article, or any loss or injury resulting from it. We do not endorse these articles, we are neither affiliated with the authors of these articles nor responsible for their content. Please see our disclaimer section for complete terms.
Page copy protected against web site content infringement by Copyscape
Copyright © 2010 - Do not copy articles from this website.
| Home | Disclaimer | Xhtml |