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All Outputs (763)

The 24hSHIMM: a continuous day and night turbulence monitor for optical communications (2023)
Conference Proceeding
Griffiths, R., Osborn, J., Farley, O., Butterley, T., Townson, M., & Wilson, R. (2023). The 24hSHIMM: a continuous day and night turbulence monitor for optical communications. In H. Hemmati, & B. S. Robinson (Eds.), Proceedings Volume 12413, Free-Space Laser Communications XXXV. https://doi.org/10.1117/12.2648789

We present the 24-hour Shack-Hartmann Image Motion Monitor (24hSHIMM), the first truly continuous, 24-hour optical turbulence monitor. Atmospheric optical turbulence is a significant limitation for free-space optical communications and other technolo... Read More about The 24hSHIMM: a continuous day and night turbulence monitor for optical communications.

Denoising Diffusion Probabilistic Models on SO(3) for Rotational Alignment (2022)
Conference Proceeding
Leach, A., Schmon, S. M., Degiacomi, M. T., & Willcocks, C. G. (2022). Denoising Diffusion Probabilistic Models on SO(3) for Rotational Alignment.

Probabilistic diffusion models are capable of modeling complex data distributions on high-dimensional Euclidean spaces for a range applications. However, many real world tasks involve more complex structures such as data distributions defined on mani... Read More about Denoising Diffusion Probabilistic Models on SO(3) for Rotational Alignment.

Exploring the application of image slicers for the EUV for the next generation of solar space missions (2022)
Conference Proceeding
Calcines-Rosario, A., Matthews, S., & Reid, H. (2022). Exploring the application of image slicers for the EUV for the next generation of solar space missions. In J. A. den Herder, S. Nikzad, & K. Nakazawa (Eds.), Proceedings Volume 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray; SPIE Astronomical Telescopes + Instrumentation. https://doi.org/10.1117/12.2626860

The Sun is a privileged place to study particle acceleration, a fundamental astrophysical problem throughout the universe. The extreme ultra-violet (EUV) contains a number of narrow emission lines formed in all layers of the solar atmosphere whose pr... Read More about Exploring the application of image slicers for the EUV for the next generation of solar space missions.

CUBES, the Cassegrain U-Band Efficient Spectrograph (2022)
Conference Proceeding
Cristiani, S., Alcalá, J., Alencar, S., Balashev, S., Bastian, N., Barbuy, B., …Zanutta., A. (2022). CUBES, the Cassegrain U-Band Efficient Spectrograph. In Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX. https://doi.org/10.1117/12.2629990

In the era of Extremely Large Telescopes, the current generation of 8-10m facilities are likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrograph (CUBES) has been designed to provi... Read More about CUBES, the Cassegrain U-Band Efficient Spectrograph.

WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques (2022)
Conference Proceeding
Bharmal, N. A., Bramall, D., Calcines Rosario, A. Z., Morris, T. J., Schmoll, J., & Staykov, L. (2022). WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques. In L. Schreiber, D. Schmidt, & E. Vernet (Eds.), Proceedings Volume 12185, Adaptive Optics Systems VIII; SPIE Astronomical Telescopes + Instrumentation. https://doi.org/10.1117/12.2629888

WIVERN is a testbed for laboratory experiments in laser-based wavefront sensing. It emulates laser uplink from a 4m telescope with 1.6 arcsec seeing and laser back-scattering from up to 20 km. Currently there are three current wavefront sensing capab... Read More about WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques.

The HR image slicer for GNIRS at Gemini North: optical design and performance (2022)
Conference Proceeding
Calcines Rosario, A., Dubbeldam, C. M., Sharples, R., Bourgenot, C., Diaz, R., & Stephens, A. W. (2022). The HR image slicer for GNIRS at Gemini North: optical design and performance. In C. J. Evans, J. J. Bryant, & K. Motohara (Eds.), Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; SPIE Astronomical Telescopes + Instrumentation. https://doi.org/10.1117/12.2626235

GNIRS (Gemini Near-InfraRed Spectrograph) is a multi-function spectrograph at Gemini North telescope offering four observational modes in the spectral range of 0.8 to 5.4 µm. It provides 2-pixel spectral resolutions from 1,200 up to 18,0000 and has s... Read More about The HR image slicer for GNIRS at Gemini North: optical design and performance.

CUBES: application of image slicers to reformat the field for two spectral resolving powers (2022)
Conference Proceeding
Calcines Rosario, A. Z., Wells, M., O’Brien, K. S., Morris, S. L., Seifert, W., Zanutta, A., …Di Marcantonio, P. (2022). CUBES: application of image slicers to reformat the field for two spectral resolving powers. In R. Navarro, & R. Geyl (Eds.), Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; SPIE Astronomical Telescopes + Instrumentation. https://doi.org/10.1117/12.2626233

The Cassegrain U-Band Efficient Spectrograph (CUBES) is a high-efficiency spectrograph designed for observations from 305 to 400nm. It will be integrated at a Cassegrain focus of the Very Large Telescope (VLT). The image slicer technology is applied... Read More about CUBES: application of image slicers to reformat the field for two spectral resolving powers.

CUBES: a UV spectrograph for the future (2022)
Conference Proceeding
Covino, S., Cristiani, S., Alcala', J., Alencar, S., Balashev, S., Barbuy, B., …Zins, G. (2022). CUBES: a UV spectrograph for the future. . https://doi.org/10.48550/arxiv.2212.12791

In spite of the advent of extremely large telescopes in the UV/optical/NIR range, the current generation of 8-10m facilities is likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrog... Read More about CUBES: a UV spectrograph for the future.

Evaluation of Student Understanding of Uncertainty in Level 1 Undergraduate Physics Laboratories (2021)
Conference Proceeding
Petts, P. L., Swift, G. P., & Nightingale, S. C. (2021). Evaluation of Student Understanding of Uncertainty in Level 1 Undergraduate Physics Laboratories. In 10th International Conference New Perspectives in Science Education (413-419)

In recent years, work has been undertaken at Durham University to investigate how student understanding of uncertainty in experimental measurements changed throughout the course of the instruction they had during their first year of undergraduate lab... Read More about Evaluation of Student Understanding of Uncertainty in Level 1 Undergraduate Physics Laboratories.

Trinity: An Imaging Air Cherenkov Telescope to Search for Ultra-High-Energy Neutrinos (2021)
Conference Proceeding
Brown, A. M., Bagheri, M., Doro, M., Gazda, E., Kieda, D., Lin, C., …Wang, A. (2021). Trinity: An Imaging Air Cherenkov Telescope to Search for Ultra-High-Energy Neutrinos. In A. Kappes, & B. Keilhauer (Eds.), Proceedings of Science: ICRC 2021

Earth-skimming neutrinos are those which travel through the Earth’s crust at a shallow angle. For Ultra-High-Energy (E휈 > 1 PeV; UHE) earth-skimming tau neutrinos, there is a high-probability that the tau lepton created by a neutrino-Earth interacti... Read More about Trinity: An Imaging Air Cherenkov Telescope to Search for Ultra-High-Energy Neutrinos.

Unmasking the history of 3C 293 with LOFAR sub‐arcsecond imaging (2021)
Conference Proceeding
Kukreti, P., Morganti, R., Shimwell, T. W., Morabito, L. K., Beswick, R. J., Brienza, M., …Gasperin, F. D. (2021). Unmasking the history of 3C 293 with LOFAR sub‐arcsecond imaging. . https://doi.org/10.1002/asna.20210107

Active galactic nuclei show episodic activity, which can be evident in galaxies that exhibit restarted radio jets. These restarted jets can interact with their environment, leaving signatures in the radio spectral energy distribution. Tracing these s... Read More about Unmasking the history of 3C 293 with LOFAR sub‐arcsecond imaging.

THz electrometry with Rydberg atoms and all IR lasers (2021)
Conference Proceeding
Chen, S., Reed, D., Downes, L. A., MacKellar, A. R., Almuhawish, N. F., Jamieson, M. J., …Weatherill, K. J. (2021). THz electrometry with Rydberg atoms and all IR lasers. In 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). https://doi.org/10.1109/irmmw-thz50926.2021.9567392

Rydberg electromagnetically induced transparency (EIT) and Autler-Townes (AT) splitting in an atomic vapor cell can be used as novel methods for electric-magnetic field detection. Here we make use of 3 infrared lasers to realize a Rydberg EIT system... Read More about THz electrometry with Rydberg atoms and all IR lasers.

Correction of finite spatial and temporal sampling effects in stereo-SCIDAR (2020)
Conference Proceeding
Butterley, T., Sarazin, M., Le Louarn, M., Osborn, J., & Farley, O. J. (2020). Correction of finite spatial and temporal sampling effects in stereo-SCIDAR. . https://doi.org/10.1117/12.2562559

Stereo scintillation detection and ranging (S-SCIDAR) is a development of the well-established SCIDAR turbulence profiling technique. An S-SCIDAR instrument has been installed at the focus of one of the 1.8m Auxiliary Telescopes at Paranal observator... Read More about Correction of finite spatial and temporal sampling effects in stereo-SCIDAR.

Shape tracing: An extension of sphere tracing for 3D non-convex collision in protein docking (2020)
Conference Proceeding
Leach, A., Rudden, L. S., Bond-Taylor, S., Brigham, J. C., Degiacomi, M. T., & Willcocks, C. G. (2020). Shape tracing: An extension of sphere tracing for 3D non-convex collision in protein docking. In 2020 IEEE 20th International Conference on Bioinformatics and Bioengineering (BIBE) (49-52). https://doi.org/10.1109/bibe50027.2020.00016

This paper presents an algorithm, similar to implicit sphere tracing, that ray marches 3D non-convex shapes for efficient collision detection. Instead of finding points on the surface where individual rays strike, an entire shape is marched in unison... Read More about Shape tracing: An extension of sphere tracing for 3D non-convex collision in protein docking.

Creating correct aberrations: why blur isn’t always bad in the eye (2020)
Conference Proceeding
Love, G. D., Banks, M. S., Cholewiak, S. A., Finch, A. P., Bifano, T. G., Gigan, S., & Ji, N. (2020). Creating correct aberrations: why blur isn’t always bad in the eye. . https://doi.org/10.1117/12.2553964

In optics in general, a sharp aberration-free image is normally the desired goal, and the whole field of adaptive optics has developed with the aim of producing blur-free images. Likewise, in ophthalmic optics we normally aim for a sharp image on the... Read More about Creating correct aberrations: why blur isn’t always bad in the eye.