Delft University of Technology
Alpert, Shane (author).
The Terrascope: Earth’s Atmosphere as a Telescopic Lens.
Degree: 2020, Delft University of Technology
This research contains the design, modeling, and analysis of the Terrascope. This apparatus intends to use the Earth’s atmosphere as a lens to bend light rays from celestial objects and focus them into a detector placed at a distance from the Earth, for example, the Moon. We develop an independent model from that of David Kipping, on whose Terrascope research this work is based. Our Terrascope model uses gradient-index optics to calculate the light bending through the Earth’s atmosphere. We also model three different atmospheric effects which modify the light passing through the atmosphere: turbulence, Rayleigh scattering, and ozone absorption. Our results show that turbulence has the largest impact on the light, and, consequently, on the functioning of our Terrascope. It causes the light to spread out, decreasing the image resolution and amplification. Without atmospheric effects, our model simulations predict a maximum amplification of about 55,000, the same results as Kipping. This occurs when using a 1m detector aperture, 1.5×10ዃm detector distance, and 1000nm wavelength light. Using the same parameters, when scattering and absorption are considered, the amplification decreases by 14%. When turbulence is considered, the amplification decreases by 99.98% to a total of 10. This is much lower than Kipping’s prediction of 22,500. We conclude that turbulence is the most important aspect of the Terrascope to consider in any future work. The Terrascope continues to be interesting concept for study and may have promise for observing celestial objects if a farther detector distance, longer light wavelength, and different atmosphere are considered.
Advisors/Committee Members: Visser, P.M. (mentor), Stam, D.M. (mentor), Delft University of Technology (degree granting institution).
to Zotero / EndNote / Reference
APA (6th Edition):
Alpert, S. (. (2020). The Terrascope: Earth’s Atmosphere as a Telescopic Lens. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:74d6427b-8623-4cae-9030-c26e76853eb5
Chicago Manual of Style (16th Edition):
Alpert, Shane (author). “The Terrascope: Earth’s Atmosphere as a Telescopic Lens.” 2020. Masters Thesis, Delft University of Technology. Accessed October 25, 2020.
MLA Handbook (7th Edition):
Alpert, Shane (author). “The Terrascope: Earth’s Atmosphere as a Telescopic Lens.” 2020. Web. 25 Oct 2020.
Alpert S(. The Terrascope: Earth’s Atmosphere as a Telescopic Lens. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2020 Oct 25].
Available from: http://resolver.tudelft.nl/uuid:74d6427b-8623-4cae-9030-c26e76853eb5.
Council of Science Editors:
Alpert S(. The Terrascope: Earth’s Atmosphere as a Telescopic Lens. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:74d6427b-8623-4cae-9030-c26e76853eb5