Our atmosphere is like a gaseous jelly it wobbles and hence your image will wobble too. The earth’s atmosphere is a barrier between you and the object (unless you have just bought the Hubble Space Telescope second-hand from NASA J). Many heavenly objects are large (the Moon, the Andromeda galaxy, the Pleiades) and you will not be able to see the whole object at a high magnification. There are no fewer than four reasons for this. To the contrary, magnification is not always the most important factor and in any case it can be varied as needed. Do you have somewhere to store the telescope and all the other paraphernalia involved? Are you going to be able to easily move your telescope from its storage space to the observation site? It is surprising how many people spend significant money on a telescope before making these elementary checks.Ī common mistake – taken from newspaper adverts and microscope use – is to assume that magnification is the most important aspect of a telescope.
Try to use someone else’s telescope to see how you get on. Assess your local light pollution and find a suitable safe spot from which to make your observations. Some newspapers have a monthly night sky column which will help you to do this. How well can you see the night sky with the naked eye from where you live? Familiarise yourself with the night sky (see below for guides to the night sky) and learn to recognise the brighter planets and the more obvious constellations throughout the year. So you are thinking about buying a telescope? Please take your time before taking the plunge or you might get a telescope that you will later regret buying, I certainly did! Why do you want to buy a telescope? What do you hope to see with it? How much money are you willing to spend on a telescope? If your answer is “as little as possible” stop right here – you cannot buy a telescope that will work properly for less than £75.
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