Imagery in the Presence of Turbulence Using Slit Aperture Telescope With Partial Adaptive Corrections |
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| Authors: | Dr Hamid Touma |
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| Institution: | (1) Astrophysical Unit, Research National Centre-, CNCPRST, B.P.8027 Agdal, C.P. 10 102, 52 Charai Omar Ibn, Khattab, Rabat, Morocco |
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| Abstract: | The objective of this communication is to study and totest numerically the concept of partial adaptive correction with arotating Slit Aperture Telescope (SAT). After a brief summary of theprinciple of image reconstruction with the rotating SAT operating withoutthe atmospheric turbulence, we describe the simulations of imagereconstruction when a partial atmospheric correction is performed in onedimension only, along the long axis of the rotating SAT. Thereconstruction algorithm performs the inversion of the Radon transform.The SAT can use a small adaptive optics system with far fewer actuatorsthan conventional two-dimensional devices, but a relatively high degree ofone-dimensional correction is needed to recover a satisfactorytwo-dimensional image. The effect of additive noise on the reconstructedimage is also investigated. |
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