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Optimization of telescope focal ratios for MLA-fiber coupled Integral Field Units

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 نشر من قبل Sabyasachi Chattopadhyay
 تاريخ النشر 2020
  مجال البحث فيزياء
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We have developed an analytic model for generic image transfer using microlens-coupled fibers to determine the telescope input beam speed that optimizes the lenslet clear aperture and minimizes fiber focal-ratio degradation. Assuming fibers are fed at f/3.5 by the lenslets, our study shows that f/11 is the optimum telescope beam speed to feed a lenslet coupled to a fiber with a 100um diameter core. These considerations are relevant for design of high-efficiency, dedicated survey telescopes that employ lenslet-coupled fiber systems.



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