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Click the Search window icon to open the Search window again. Type "M 55" in the text box and press Enter or click the Search icon to go to this object. To see the object, zoom in to increase the magnification. If you have a keyboard, you can press CTRL/Command-up arrow to zoom in. Make your field of view (FOV) no larger than 0.5 degrees - the smaller your field of view, the greater your magnification.

Magnification is the process of enlarging the appearance of an object. We calculate the magnification of an object by indicating the fold change in size. So if something appears to be double the size of the real item, then it is obviously magnified 2X. Because there is a magnification by the eye-piece (ocular lens), as well as the objective lenses, our final magnification of an item is the product of those two lenses. The lowest magnification objective lens (usually 4X or 5X) is referred to as a scanning lens. There is also usually a low power lens at 10X and a higher magnification lens at 40X. There may be a higher magnification lens at 100X but these usually require oil to function properly and are often reserved for microbiology labs. • What is the power of the ocular lens? • We can calculate that as: Magnification total = Magnification objective X Magnification ocular • With this in mind, fill in the following table:

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