telescopes

This is a basic guide to help you chose the right telescope for you. This is not an exhaustive list, but a collection of things I've learned over time.

WHAT TYPE OF TELESCOPE:

This is a summary of the 4 main types of telescope and their + and - points. It's mostly practicality advice and I have tried to keep my opinion out of it.

Newtonian Reflector:

+ Large aperture (more light in) is relatively cheap

+ No lenses so no colour fringe issues

+ Large range of sizes

+ Very little dew build up as there's no lens in the front of the tube

--

- Large aperture scopes are long too and can be cumbersome

- Bigger scopes are quite heavy due to the large lower mirror

- Needs a decent mount as length needs balance

- Eyepiece on side can be awkward to get to as it's at the front.

- Can catch on tripod at near-vertical orientations due to length

- For optimal performance the mirrors need collimating (aligning). This is straightforward but isn't usually required on other scopes

Ever since a young age, I've been interested in space. Just recently, however, I started practicing as an amateur astronomer. In 2007, I started the Visual Astronomy blog to share my experiences and to help me learn as an amateur astronomer. Recently, I've graduated with a Bachelor's of Engineering, Electrical, and may be going back to graduate school for the same. Eventually, I want to work at NASA, and if we go to Mars, I want to be a part of that!

Sean Welton

www.visualastronomy.com

Identity
Last Name: 
Welton
First Name: 
Sean
Education: 
Bachelor's of Engineering, Electrical - Youngstown State University 2009
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