Refracting Telescopes – Astronomy Essay

Telescopes

Comparison

Model Meade NG70-SM Altazimuth Refractor Telescope Celestron AstroMaster 70 AZ Refractor Telescope Celestron AstroMaster 90 EQ Equatorial Telescope Refractor 21064
Price $69.98 $119.98 $209.75
Manufacturer Meade Celestron Celestron
Entry level use Perfect Perfect Not recommended
Set up Can be easily set up as it is hand-held. Can also be mounted on a tripod Quick and easy no-tool setup. Pre-assembled tripod makes mounting very easy. Difficult as it requires mounting on a tripod and balancing on an Equatorial Mount
Use The user friendly Altazimunth (AZ) Mount makes it easy to use. Focusing is straightforward. Easy to use as it is fitted with slow-motion controls for smooth movements. Fitted with AZ controls for smooth and precise focus. Usage can be difficult for beginners as the Equatorial mount requires very small distance movements.

Meade NG70-SM Altazimuth Refractor Telescope

The Meade NG70-SM is a very cheaply priced telescope that is ideal for both terrestrial and celestial viewing. Despite its low price, this telescope features a sturdy design and portable design with sufficient optical abilities to enthuse any newcomer to the world stargazing. The telescope offers clear and sharp images of moons and planets. The Meade NG70-SM is best used on bright conditions as it has a small aperture that does not let in enough light (Telescopes.com, para. 1).

Specifications

Haven’t Found The Relevant Content? Hire a Subject Expert to Help You With
Refracting Telescopes – Astronomy Essay
Post Your Own Question And Get A Custom Answer
Hire Writer
Optical Design Refractor
Aperture 70mm
Focal Length 700mm
F/ratio 10
Eyepiece 1 9mm
Magnification 1 78X
Eyepiece 2 25mm
Magnification 2 28X
Highest Useful Magnification 150X
Weight 7.85kg
Mount Type Alt-Azimuth

Celestron AstroMaster 70 AZ Refractor Telescope

Designed for first time users, the AstroMaster 70 AZ telescope is designed for use for both land and sky viewing. The Altazimuth mount offers a convenient pan handle that enable a smooth motion which helps in making precise movements. Despite its small aperture size, the telescope offers breathtaking images of the Orion and other star systems (Telescopes.com, para. 2). With its user-friendly features, the AstroMaster 70 AZ is definitely a must have for novice sky viewers.

Specifications

Optical Design Refractor
Aperture 70 mm
Focal Length 900mm
F/ratio 12.86
Eyepiece 1 20mm
Magnification 45x
Eyepiece 2 10 mm
Magnification 2: 90 x
Highest Useful Magnification 180X
Mount Type Alt-Az
Weight 8.16kg

Celestron AstroMaster 90 EQ Equatorial Telescope Refractor 21064

Slightly more expensive than its predecessors, the Celestron 21064 is a dual purpose telescope suitable for viewing both terrestrial and celestial objects. With a powerful 70mm lens, the telescope allows more light through and this comes in handy in viewing distant objects, such as the moons of Jupiter. The telescope has two eyepieces with 50X and 100X magnification, making it possible to obtain clear and sharp images than its predecessors. The Equatorial mounts make it easier to have smooth movements and this helps when a stargazer is working under high magnifications, where even slight motion affects the image (Yahoo, para. 1).

Specifications

Optical Design Refractor
Aperture 90 mm
Focal Length 1000mm
F/ratio 11.11
Eyepiece 1 20mm
Magnification 150 x
Eyepiece 2 10 mm
Magnification 2: 100 x
Mount Type Equatorial
Slow-motion Control Vertical Only
Weight 9.07kg

Conclusion

Being a relatively low priced telescope, the Meade NG70-SM offers limited viewing abilities with respect to clarity and sharpness of images both in terrestrial and celestial usage. Consequently, it can only be comfortably used by amateur stargazers and children. The AstroMaster 70 AZ offers a better alternative but with a small aperture, the viewing abilities are limited. The AstroMaster 90 EQ, with its Equatorial mount and large aperture, is a good choice as its use can be extended as compared to the other two models. This model brings into view clear images of star clusters, nebulae, and distant planets.

Works Cited

. Celestron AstroMaster 70 AZ Refractor Telescope. 2011.

. Meade NG70-SM Altazimuth Refractor Telescope. 2011.

Yahoo. 21064 w/ FREE UPS. 2011.

Why Hire a Professional Essay Writer from MyHomeworkGeeks

Quality Urgent Essays

Domyhomeworkk online platform provides the best essay writing service ever received elsewhere, thanks to our professional essay writers. Experience gained in the 10+ years of being in the assignment writing industry is also an added advantage.

Professional and Experienced Academic Writers

A lot is done to maintain us as the best essay writing service provider. Besides owning a degree from a recognized university, a writer must pass the rigorous tests we take them through before they are considered eligible to offer urgent essay help on our website.

Affordable Urgent Assignment Help

Who said a reliable website should not be cheap also? While it is human nature to associate prices with quality, that does not always work. At domyhomeworkk.com, we guarantee you cheap and urgent essay help without compromising the quality.

24/7 Available Urgent Essay Writing Service

Whether it is a ‘write my essay for me cheap’ or ‘edit my essay’ order you want to request, always feel free to reach us at any time of the day. Our experts work in shifts to ensure that you access urgent essay writing services at any time of the day.

Plagiarism Free Essays Online

The punitive measures that come with plagiarized content are so harsh, and we understand that. We consequently ensure to write each client’s papers from scratch no matter how urgent the essay is. To acknowledge borrowed content, our quick writer references and cites the work.

Wow Customer Support 24/7

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

So much stress and so little time? Take care of yourself: let us help you with your tasks. We offer all kinds of writing services.

Essays

Custom Essay Writing Services

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission and Business Papers

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Editing

Editing and Proofreading

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Coursework

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.

Have a homework question? Get help from verified tutors now!

Sometimes it is hard to do all the work on your own

Let us help you get a good grade on your paper. Get professional help and free up your time for more important courses. Let us handle your;

  • Dissertations and Thesis
  • Essays
  • All Assignments

  • Research papers
  • Terms Papers
  • Online Classes