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arXiv · 2208.05411

Speckle simulation tool for automated modelling of a large range of telescope aperture to fried parameter ratios

Sorabh Chhabra·Abhay A. Kohok·Bhushan S. Joshi·A. N. Ramprakash·Chaitanya V. Rajarshi·Rani S. Bhandare
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Abstract

The Speckle Imager via MUlti Layer Atmospheric Turbulence Object Reconstructor (SIMULATOR) is a lab-based testbed instrument developed to test for speckle correlation-based techniques in the optical regime. However, this instrument can be used as a testbed against post-processing techniques or algorithms like lucky imaging, phase diversity method etc. The SIMULATOR can emulate 3D atmospheric turbulence behaviour using a three-layer turbulence screen, giving the user command over important site characteristics like wind profile, global fried parameter, global isoplanatic patch, mid-layer and high-layer height effects etc. This testbed is unique in that it can mimic a broad range of site and telescope characteristics accurately without the need for manual intervention or tuning of parameters. The current version can handle a Field of View (FoV) of up to $0.3^{\circ}$, bandwidth ranges from 4860 to 6560 nm and can cover atmospheric turbulence heights up to 83 km.

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Sorabh Chhabra, Abhay A. Kohok, Bhushan S. Joshi, A. N. Ramprakash, Chaitanya V. Rajarshi, Rani S. Bhandare. 2022-08-10. Speckle simulation tool for automated modelling of a large range of telescope aperture to fried parameter ratios. https://arxiv.org/abs/2208.05411

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