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A Solar telescope is a special purpose optical telescope used to observe the sun

Professional solar telescopes

Solar telescopes need optics large enough to achieve the best possible diffraction limit but they do not need the associated light-collecting power of other astronomical telescopes. Because solar telescopes are operated during the day and image a very bright object, and because the seeing limit imposed by atmospheric turbulence is much worse than that experienced by night-time telescopes, the objectives of such telescopes are about 1m or under in diameter. The heat generated by the tightly-focused sunlight also poses a design problem. Professional solar observatories may have main optical elements with very long focal lengths and light paths operating in a vacuum to eliminate air motion due to convection inside the telescope. Since this makes the telescope relatively massive (some are the most massive optical telescopes in the world), and the object that they image (the Sun) travels on a narrow fixed path across the sky, solar telescopes are usually fixed in position (sometimes buried underground) with the only moving part being a heliostat to track the sun. These telescopes use filtration and projection techniques for direct observation, in additional to filtered cameras of various types. Specialized tools such as spectroscopes and spectrohelioscopes are used to examine the sun in different wavelengths.

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15-30x 1200mm 2500mm telescope for Rebel XS XSi XTi 50D

25-75X Telescope for Sony Alpha A200 A350 A700 A900

1200mm 2000mm Telescope for D40 D60 D70 D80 D90 D300 D3

15-30x 1200mm 2500mm telescope for Sony A200 A4350 A700

1200mm 2000mm Telescope for Olympus E420 E420 E510 E520

25-75X Telescope for Nikon D40 D60 D70 D80 D90 D300 D3D

ASTRONOMY TODAY SOLAR SYSTEM 5TH V1 2005 0131176838 G

15-30x 1200mm 2500mm telescope for D40 D60 D70 D80 D90

25-75X Telescope for Olympus E3 E30 E410 E420 E510 E520

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