Measuring the Effect of Atmospheric Dispersion on MICADO Using ScopeSIM

McKibben Reid, Fraser (2022) Measuring the Effect of Atmospheric Dispersion on MICADO Using ScopeSIM. Bachelor's Thesis, Astronomy.

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Abstract

With increasingly large Earth based telescopes being built, the effect of atmospheric dispersion on telescopes needs to be reevaluated. MICADO aims to be a diffraction limited imager on the ELT and so will be especially sensitive to atmospheric dispersion. It will reverse atmospheric dispersion using an atmospheric dispersion corrector (ADC) by calculating the expected atmospheric dispersion from a model. Differences in models are small but may be significant in the context of MICADO. Spectroscopy is often used to measure atmospheric dispersion on-sky as it shifts the spectral trace spatially as a function of wavelength, making it easy to measure the dispersion. We use ScopeSIM to simulate the output of MICADO's spectroscopy mode with no ADC to see if dispersion was measurable. We then compare the dispersion to that calculated by existing models. In our comparisons, differences of up to 1.64 milli arc seconds were present, significant in the context of MICADO.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Noel-Storr, J.
Degree programme:	Astronomy
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	15 Jul 2022 12:23
Last Modified:	15 Jul 2022 12:23
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/27883

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