Question about Celestron AstroMaster 70 AZ (160 x 70mm) Telescope

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How to look at stars - Celestron AstroMaster 70 AZ (160 x 70mm) Telescope

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Your telescope is fortunately of a type (a refractor) that is ready to go once you take the lens cap off, and mount an eyepiece in it.
The magnification you will get does not matter much if you are looking at stars, but it is the focal length of the scope, 900mm, divided by the focal length of the eyepiece. So for example 900/20 = 45x.
The next step is to obtain a sky chart such as
http://www.fourmilab.ch/yoursky/cities.html

(adjust this to show the local horizon) and then either print or take the PC outside and match it with the constellations you see.

Some stars are more interesting to look at because they are coloured (Betelgeuse - Alpha Orionis) or actually double stars (Rigel Kent - Alpha Centauri). See

http://stars.astro.illinois.edu/sow/sowlist.html

Another way is to identify a Constellation, and then look up Wikipedia for that. You will find info on the resident stars there eg

http://en.wikipedia.org/wiki/Centaurus

Posted on Feb 22, 2012

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