The great chimney experiment |
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The object of our experiment was to take five telescopes and image the same object using an identical camera and under the same lighting conditions. Then compare the results... We did at least manage to image the same object with five different scopes using the same camera! However, as can clearly be seen, lighting conditions were far from identical. Even quite small changes in lighting make Comparisons very difficult. As well as attempting to demonstrate the effects of aperture the experiment demonstrates the importance of image scale - The Schmidt-Newtonian clearly shows less detail in the object than either the 127mm refractor or the 102mm Maksutov-Cassegrain. |
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| D = 76.2mm Fl = 910mm Achromatic refractor |
D =127mm Fl = 1200mm Achromatic refractor |
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D = 102mm Fl = 1300mm Maksutov-Cassegrain |
D =127mm Fl = 1200mm Achromatic refractor |
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D = 152mm Fl = 1216mm Newtonian |
D = 152mm Fl = 760mm Schmidt-Newtonian |
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In terms of the effects of aperture the experiment was far from conclusive. There is very little to choose between the 102mm, 127mm and 152mm scopes of around the same focal length. The limiting factor here seems to be the resolution of the imaging device itself. |
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