4. What are the difficulties in using ground based optical
telescopes? How are they overcome?
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Explanation:
The difficulties in using ground based optical telescopes is that environment which preserves life on Earth also intervenes with a telescope's image quality. The components and particles in the Earth's environment curve the light so that pictures discovered from observatory telescopes seems to be blurred.
It can be recovered by Hardware-oriented reconstruction methods which are based on adaptive optics and wave-front sensing. Image-processing-based techniques comprise of speckle-imaging methods and hybrid imaging procedures which use ingredients of image reconstruction.
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