Staff profile

Responsibilities within department

Research Assosciate CFAI

Teaching activity

Level 4 Optics teaching, Adaptive Optics Postgraduate Lectures

Research interests

Laser Guide Star Adaptive Optics

Conference Paper

• Distortion of visible daytime multi-conjugate adaptive optics control
  Kongkaew, P., Morris, T. J., & Osborn, J. (2024, June). Distortion of visible daytime multi-conjugate adaptive optics control. Presented at Adaptive Optics Systems IX, Yokohama, Japan
• HARMONI at ELT: project status and instrument overview
  Thatte, N. A., Melotte, D., Neichel, B., Le Mignant, D., Rees, P., Clarke, F., Ferraro-Wood, V., Gonzalez, O., Jones, M., Álvarez Urueña, A., Vilaseca, H., Arribas Mocoroa, S., Caballero, J. A., Carracedo Carballal, G. J., Estrada Piqueras, A., Ferro, I., García García, M., Lamperti, I., Pereira Santaella, M., Perna, M., …York, A. (2024, June). HARMONI at ELT: project status and instrument overview. Presented at Ground-based and Airborne Instrumentation for Astronomy X, Yokohama, Japan
• WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques
  Bharmal, N. A., Bramall, D., Calcines Rosario, A. Z., Morris, T. J., Schmoll, J., & Staykov, L. (2022, December). WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques. Presented at Adaptive Optics Systems VIII
• Opto-mechanical designs for the HARMONI adaptive optics systems
  Dohlen, K., Morris, T., Piqueras Lopez, J., Calcines-Rosario, A., Costille, A., Dubbeldam, M., El Hadi, K., Fusco, T., Llored, M., Neichel, B., Pascal, S., Sauvage, J.-F., Vola, P., Clarke, F., Schnetler, H., Bryson, I., & Thatte, N. (2018, December). Opto-mechanical designs for the HARMONI adaptive optics systems. Presented at Adaptive Optics Systems VI: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas
• Phase A AO system design and performance for MOSAIC at the ELT
  Morris, T., Basden, A., Calcines-Rosario, A., Dohlen, K., Dubbeldam, C., El Hadi, K., Fitzsimons, E., Fusco, T., Gendron, É., Hammer, F., Jagourel, P., Jenkins, D., Morel, C., Morris, S., Rousset, G., Townson, M., Vola, P., & Younger, E. (2018, June). Phase A AO system design and performance for MOSAIC at the ELT. Presented at Adaptive Optics Systems VI: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas
• MOSAIC optical relay module: optical design, performance, and flexure analysis
  Calcines, A., Dubbeldam, M., Morris, T. J., Fitzsimons, E., Schnetler, H., Cohen, M., & Amans, J.-P. (2018, December). MOSAIC optical relay module: optical design, performance, and flexure analysis. Presented at Ground-based and Airborne Instrumentation for Astronomy VII, SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas
• Preliminary optical design of an Active Optics test bench for space applications
  Calcines, A., Bitenc, U., Rolt, S., Reeves, S., Doelman, N., Human, J., Morris, T., Myers, R., & Talbot, G. (2016, July). Preliminary optical design of an Active Optics test bench for space applications. Presented at XII Scientific Meeting of the Spanish Astronomical Society, Bilbao, Spain
• Preliminary on-sky results of the CANARY experiment with an ELT-elongated sodium LGS
  Bardou, L., Gendron, E., Rousset, G., Gratadour, D., Basden, A. G., Bonaccini, D., Buey, T., Centrone, M., Chemla, F., Lombardi, G., Marchetti, E., Morris, T. J., Myers, R. M., Osborn, J., Townson, M. J., Vidal, F., & Reyes Garcia-Talavera, M. (2017, June). Preliminary on-sky results of the CANARY experiment with an ELT-elongated sodium LGS. Presented at Adaptive Optics for Extremely Large Telescopes 5, Tenerife, Canary Islands, Spain
• Photometry and Spectrum measurements of the Laser Guide Star beam emission at Observatorio del Roque de Los Muchachos with the Gran Telescope Canarias
  Lombardi, G., Calia, B., Centrone, M., Talavera, M. R. G., Morris, T., Pfrommer, T., Basden, A., Vidal, F., Gendron, E., Rousset, G., Mayers, R., Osborn, J., Reeves, A., Talbot, R., Townson, M., Lavers, A. C., & Postigoh, A. D. U. (2017, June). Photometry and Spectrum measurements of the Laser Guide Star beam emission at Observatorio del Roque de Los Muchachos with the Gran Telescope Canarias. Presented at Adaptive Optics for Extremely Large Telescopes 5, Tenerife, Canary Islands, Spain
• CHOUGH: implementation and performance of a high-order 4m AO demonstrator
  Bharmal, N. A., Basden, A. G., Bourgenot, C. J., Black, M., Dubbeldam, C. M., Henry, D. M., Hölck-Santibanez, D., Morris, T. J., Robertson, D. J., Schmoll, J., Talbot, R. G., Younger, E. J., & Myers, R. M. (2016, July). CHOUGH: implementation and performance of a high-order 4m AO demonstrator. Presented at Adaptive Optics Systems V, Edinburgh
• Science requirements and trade-offs for the MOSAIC instrument for the European ELT
  Evans, C., Puech, M., Rodrigues, M., Barbuy, B., Cuby, J., Dalton, G., Fitzsimons, E., Hammer, F., Jagourel, P., Kaper, L., Morris, S., & Morris, T. (2016, June). Science requirements and trade-offs for the MOSAIC instrument for the European ELT. Presented at Ground-based and Airborne Instrumentation for Astronomy VI, Edinburgh
• The E-ELT first light spectrograph HARMONI: capabilities and modes
  Thatte, N. A., Clarke, F., Bryson, I., Shnetler, H., Tecza, M., Fusco, T., Bacon, R. M., Richard, J., Mediavilla, E., Neichel, B., Arribas, S., Garcia-Lorenzo, B., Remillieux, A., El Madi, K., Herreros, J. M., Melotte, D., O'Brien, K., Tosh, I. A., Vernet, J., Hammersley, P., …Evans, C. J. (2016, December). The E-ELT first light spectrograph HARMONI: capabilities and modes. Presented at Ground-based and Airborne Instrumentation for Astronomy VI,: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh
• HIRES: the high resolution spectrograph for the E-ELT
  Zerbi, F., Bouchy, F., Fynbo, J., Maiolino, R., Piskunov, N., Rebolo Lopez, R., Santos, N., Strassmeier, K., Udry, S., Vanzi, L., Riva, M., Basden, A., Boisse, I., Bonfils, X., Buscher, D., Cabral, A., Dimarcantonio, P., Di Varano, I., Henry, D., Monteiro, M., …Zoccali, M. (2014, August). HIRES: the high resolution spectrograph for the E-ELT. Presented at Ground-based and Airborne Instrumentation for Astronomy V, Montréal, Quebec, Canada
• Daytime site characterisation of La Palma, and its relation to night-time conditions
  Townson, M., Kellerer, A., Osborn, J., Butterley, T., Morris, T., & Wilson, R. (2014, December). Daytime site characterisation of La Palma, and its relation to night-time conditions. Presented at Ground-based and Airborne Instrumentation for Astronomy V, Montréal, Quebec
• Acceleration of AO simulation using programmable logic
  Basden, A., Wilson, R., Assemat, F., Bharmal, N., Butterley, T., Geng, D., Goodsell, S., Harrison, M., Morris, T., Myers, R., & Saunter, C. (2006, December). Acceleration of AO simulation using programmable logic

Journal Article

• Laboratory demonstration of single-camera PPPP wavefront sensing using neural networks
  Gonzalez-Gutierrez, C., Bharmal, N. A., Rodriguez-Muro, J., Buendia-Roca, A., Yang, H., Fitzpatrick, L. W., Morris, T. J., & de Cos Juez, F. J. (2024). Laboratory demonstration of single-camera PPPP wavefront sensing using neural networks. International Journal of Optomechatronics, 18(1), Article 2386985. https://doi.org/10.1080/15599612.2024.2386985
• Adaptive optics telemetry standard: Design and specification of a novel data exchange format
  Gomes, T., Correia, C. M., Bardou, L., Cetre, S., Kolb, J., Kulcsár, C., Leroux, F., Morris, T., Morujão, N., Neichel, B., Beuzit, J.-L., & Garcia, P. (2024). Adaptive optics telemetry standard: Design and specification of a novel data exchange format. Astronomy & Astrophysics, 686, Article A7. https://doi.org/10.1051/0004-6361/202348486
• First stellar photons for an integrated optics discrete beam combiner at the William Herschel Telescope
  Nayak, A. S., Labadie, L., Sharma, T. K., Piacentini, S., Corrielli, G., Osellame, R., Gendron, É., Buey, J.-T. M., Chemla, F., Cohen, M., Bharmal, N. A., Bardou, L. F., Staykov, L., Osborn, J., Morris, T. J., Pedretti, E., Dinkelaker, A. N., Madhav, K. V., & Roth, M. M. (2021). First stellar photons for an integrated optics discrete beam combiner at the William Herschel Telescope. Applied Optics, 60(19), D129-D142. https://doi.org/10.1364/ao.423881
• Global tip-tilt and high-order aberration correction with plenoptic wavefront sensors in closed-loop AO systems
  Zhang, Z., Morris, T., Bharmal, N., & Liang, Y. (2021). Global tip-tilt and high-order aberration correction with plenoptic wavefront sensors in closed-loop AO systems. Applied Optics, 60(14), 4208 - 4216. https://doi.org/10.1364/ao.420729
• On-sky results for the integrated microlens ring tip-tilt sensor
  Hottinger, P., Harris, R. J., Crass, J., Dietrich, P.-I., Blaicher, M., Bechter, A., Sands, B., Morris, T., Basden, A. G., Bharmal, N. A., Heidt, J., Anagnos, T., Neureuther, P. L., Glück, M., Power, J., Pott, J.-U., Koos, C., Sawodny, O., & Quirrenbach, A. (2021). On-sky results for the integrated microlens ring tip-tilt sensor. Journal of the Optical Society of America B, 38(9), https://doi.org/10.1364/josab.421459
• Limitations imposed by optical turbulence profile structure and evolution on tomographic reconstruction for the ELT
  Farley, O., Osborn, J., Morris, T., Fusco, T., Neichel, B., Correia, C., & Wilson, R. (2020). Limitations imposed by optical turbulence profile structure and evolution on tomographic reconstruction for the ELT. Monthly Notices of the Royal Astronomical Society, 494(2), 2773-2784. https://doi.org/10.1093/mnras/staa795
• Automated wind velocity profiling from adaptive optics telemetry
  Laidlaw, D. J., Osborn, J., Morris, T. J., Basden, A. G., Gendron, E., Rousset, G., Townson, M. J., & Wilson, R. W. (2020). Automated wind velocity profiling from adaptive optics telemetry. Monthly Notices of the Royal Astronomical Society, 491(1), 1287-1294. https://doi.org/10.1093/mnras/stz3062
• Experience with Artificial Neural Networks Applied in Multi-object Adaptive Optics
  Suárez Gómez, S. L., González-Gutiérrez, C., Alonso, E. D., Santos, J. D., Rodríguez, M. L. S., Morris, T., Osborn, J., Basden, A., Bonavera, L., González, J. G.-N., & de Cos Juez, F. J. (2019). Experience with Artificial Neural Networks Applied in Multi-object Adaptive Optics. Publications of the Astronomical Society of the Pacific, 131(1004), Article 108012. https://doi.org/10.1088/1538-3873/ab1ebb
• Identifying optical turbulence profiles for realistic tomographic error in adaptive optics
  Farley, O., Osborn, J., Morris, T., Fusco, T., Neichel, B., Correia, C., & Wilson, R. (2019). Identifying optical turbulence profiles for realistic tomographic error in adaptive optics. Monthly Notices of the Royal Astronomical Society, 488(1), 213-221. https://doi.org/10.1093/mnras/stz1669
• Efficient implementation of pseudo open loop control for adaptive optics on Extremely Large Telescopes
  Basden, A., Jenkins, D., Morris, T., Osborn, J., & Townson, M. (2019). Efficient implementation of pseudo open loop control for adaptive optics on Extremely Large Telescopes. Monthly Notices of the Royal Astronomical Society, 486(2), 1774-1780. https://doi.org/10.1093/mnras/stz918
• Representative optical turbulence profiles for ESO Paranal by hierarchical clustering
  Farley, O., Osborn, J., Morris, T., Sarazin, M., Butterley, T., Townson, M., Jia, P., & Wilson, R. (2018). Representative optical turbulence profiles for ESO Paranal by hierarchical clustering. Monthly Notices of the Royal Astronomical Society, 481(3), 4030-4037. https://doi.org/10.1093/mnras/sty2536
• Optimizing the accuracy and efficiency of optical turbulence profiling using adaptive optics telemetry for extremely large telescopes
  Laidlaw, D. J., Osborn, J., Morris, T. J., Basden, A. G., Beltramo-Martin, O., Butterley, T., Gendron, E., Reeves, A. P., Rousset, G., Townson, M. J., & Wilson, R. W. (2018). Optimizing the accuracy and efficiency of optical turbulence profiling using adaptive optics telemetry for extremely large telescopes. Monthly Notices of the Royal Astronomical Society, 483(4), 4341-4353. https://doi.org/10.1093/mnras/sty3285
• Compact, modular and in-plane AOSLO for high-resolution retinal imaging
  Young, L. K., Morris, T. J., Saunter, C. D., & Smithson, H. E. (2018). Compact, modular and in-plane AOSLO for high-resolution retinal imaging. Biomedical Optics Express, 9(9), 4275-4293. https://doi.org/10.1364/boe.9.004275
• Centroid error compensation method for a star tracker under complex dynamic conditions
  Tan, W., Qin, S., Myers, R., Morris, T., Jiang, G., Zhao, Y., Wang, X., Ma, L., & Dai, D. (2017). Centroid error compensation method for a star tracker under complex dynamic conditions. Optics Express, 25(26), 33559-33574. https://doi.org/10.1364/oe.25.033559
• Recording fixational eye movements with a new AOSLO: simulation, measurement and evaluation
  Young, L. K., Hauperich, A. K., Morris, T. J., Saunter, C. D., & Smithson, H. E. (2017). Recording fixational eye movements with a new AOSLO: simulation, measurement and evaluation. Journal of Vision, 17(7), https://doi.org/10.1167/17.7.34
• Efficient photonic reformatting of celestial light for diffraction-limited spectroscopy
  MacLachlan, D., Harris, R., Gris-Sánchez, I., Morris, T., Choudhury, D., Gendron, E., Basden, A., Spaleniak, I., Arriola, A., Birks, T., Allington-Smith, J., & Thomson, R. (2017). Efficient photonic reformatting of celestial light for diffraction-limited spectroscopy. Monthly Notices of the Royal Astronomical Society, 464(4), 4950-4957. https://doi.org/10.1093/mnras/stw2558
• Turbulence velocity profiling for high sensitivity and vertical-resolution atmospheric characterization with Stereo-SCIDAR
  Osborn, J., Butterley, T., Townson, M., Reeves, A., Morris, T., & Wilson, R. (2017). Turbulence velocity profiling for high sensitivity and vertical-resolution atmospheric characterization with Stereo-SCIDAR. Monthly Notices of the Royal Astronomical Society, 464(4), 3998-4007. https://doi.org/10.1093/mnras/stw2685
• Wave-front error breakdown in laser guide star multi-object adaptive optics validated on-sky by CANARY
  Martin, O., Gendron, É., Rousset, G., Gratadour, D., Vidal, F., Morris, T., Basden, A., Myers, R., Correia, C., & Henry, D. (2017). Wave-front error breakdown in laser guide star multi-object adaptive optics validated on-sky by CANARY. Astronomy & Astrophysics, 598, Article A37. https://doi.org/10.1051/0004-6361/201629271
• Monte-Carlo modelling of multi-object adaptive optics performance on the European Extremely Large Telescope
  Basden, A., & Morris, T. (2016). Monte-Carlo modelling of multi-object adaptive optics performance on the European Extremely Large Telescope. Monthly Notices of the Royal Astronomical Society, 463(4), 4184-4193. https://doi.org/10.1093/mnras/stw2306
• Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems
  Basden, A., Atkinson, D., Bharmal, N., Bitenc, U., Brangier, M., Buey, T., Butterley, T., Cano, D., Chemla, F., Clark, P., Cohen, M., Conan, J.-M., de Cos, F., Dickson, C., Dipper, N., Dunlop, C., Feautrier, P., Fusco, T., Gach, J., Gendron, E., …Younger, E. (2016). Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems. Monthly Notices of the Royal Astronomical Society, 459(2), 1350-1359. https://doi.org/10.1093/mnras/stw730
• A tomographic algorithm to determine tip-tilt information from laser guide stars
  Reeves, A., Morris, T., Myers, R., Bharmal, N., & Osborn, J. (2016). A tomographic algorithm to determine tip-tilt information from laser guide stars. Monthly Notices of the Royal Astronomical Society, 459(1), 333-341. https://doi.org/10.1093/mnras/stw622
• Photonic spatial reformatting of stellar light for diffraction-limited spectroscopy
  Harris, R., MacLachlan, D., Choudhury, D., Morris, T., Gendron, E., Basden, A., Brown, G., Allington-Smith, J., & Thomson, R. (2015). Photonic spatial reformatting of stellar light for diffraction-limited spectroscopy. Monthly Notices of the Royal Astronomical Society, 450(1), 428-434. https://doi.org/10.1093/mnras/stv410
• Sensitivity improvements for Shack-Hartmann wavefront sensors using total variation minimization
  Basden, A., Morris, T., Gratadour, D., & Gendron, E. (2015). Sensitivity improvements for Shack-Hartmann wavefront sensors using total variation minimization. Monthly Notices of the Royal Astronomical Society, 449(4), 3537-3542. https://doi.org/10.1093/mnras/stv617
• On-sky tests of the CuReD and HWR fast wavefront reconstruction algorithms with CANARY
  Bitenc, U., Basden, A., Bharmal, N., Morris, T., Dipper, N., Gendron, E., Vidal, F., Gratadour, D., Rousset, G., & Myers, R. (2015). On-sky tests of the CuReD and HWR fast wavefront reconstruction algorithms with CANARY. Monthly Notices of the Royal Astronomical Society, 448(2), 1199-1205. https://doi.org/10.1093/mnras/stv003
• Characterising daytime atmospheric conditions on La Palma
  Townson, M., Kellerer, A., Osborn, J., Butterley, T., Morris, T., & Wilson, R. (2015). Characterising daytime atmospheric conditions on La Palma. Journal of Physics: Conference Series, 595, Article 012035. https://doi.org/10.1088/1742-6596/595/1/012035
• Retrieving tip-tilt information from Tomographic Laser Guide Star Adaptive Optics Systems
  Reeves, A., Myers, R., Morris, T., Osborn, J., & Bharmal, N. A. (2015). Retrieving tip-tilt information from Tomographic Laser Guide Star Adaptive Optics Systems. https://doi.org/10.20353/k3t4cp1131633
• Wide-field adaptive optics performance in cosmological deep fields for multi-object spectroscopy with the European Extremely Large Telescope
  Basden, A., Evans, C., & Morris, T. (2014). Wide-field adaptive optics performance in cosmological deep fields for multi-object spectroscopy with the European Extremely Large Telescope. Monthly Notices of the Royal Astronomical Society, 445(4), 4008-4014. https://doi.org/10.1093/mnras/stu2022
• Characterization of a Commercial, Front-Illuminated Interline Transfer CCD Camera for use as a Guide Camera on a Balloon-Borne Telescope
  Clark, P., Massey, R., Chang, H., Galloway, M., Israel, H., Jones, L., Li, L., Mandic, M., Morris, T., Netterfield, C., Peacock, J., Sharples, R., & Susca, S. (2014). Characterization of a Commercial, Front-Illuminated Interline Transfer CCD Camera for use as a Guide Camera on a Balloon-Borne Telescope. Journal of Astronomical Instrumentation, 3(2), Article 1440003. https://doi.org/10.1142/s2251171714400030
• Analysis of on-sky MOAO performance of CANARY using natural guide stars
  Vidal, F., Gendron, E., Rousset, G., Morris, T., Basden, A., Myers, R., Brangier, M., Chemla, F., Dipper, N., Gratadour, D., Henry, D., Hubert, Z., Longmore, A., Martin, O., Talbot, G., & Younger, E. (2014). Analysis of on-sky MOAO performance of CANARY using natural guide stars. Astronomy & Astrophysics, 569, Article A16. https://doi.org/10.1051/0004-6361/201322991
• Open loop tomography with artificial neural networks on CANARY: on-sky results
  Osborn, J., Guzman, D., De Cos Juez, F., Basden, A., Morris, T., Gendron, E., Butterley, T., Myers, R., Guesalaga, A., Sanchez Lasheras, F., Gomez Victoria, M., Sánchez Rodríguez, M., Gratadour, D., & Rousset, G. (2014). Open loop tomography with artificial neural networks on CANARY: on-sky results. Monthly Notices of the Royal Astronomical Society, 441(3), 2508-2514. https://doi.org/10.1093/mnras/stu758
• Stereo-SCIDAR: optical turbulence profiling with high sensitivity using a modified SCIDAR instrument
  Shepherd, H., Osborn, J., Wilson, R., Butterley, T., Avila, R., Dhillon, V., & Morris, T. (2014). Stereo-SCIDAR: optical turbulence profiling with high sensitivity using a modified SCIDAR instrument. Monthly Notices of the Royal Astronomical Society, 437(4), 3568-3577. https://doi.org/10.1093/mnras/stt2150
• Monte-Carlo simulation of ELT scale multi-object adaptive optics deformable mirror requirements and tolerances
  Basden, A., Bharmal, N., Myers, R., Morris, S., & Morris, T. (2013). Monte-Carlo simulation of ELT scale multi-object adaptive optics deformable mirror requirements and tolerances. Monthly Notices of the Royal Astronomical Society, 435(2), 992-998. https://doi.org/10.1093/mnras/stt1302
• WIde-field adaptive optics correction using a single rotating laser guide star
  Morris, T., & Myers, R. (2006). WIde-field adaptive optics correction using a single rotating laser guide star. Monthly Notices of the Royal Astronomical Society, 370(4), 1783-1789. https://doi.org/10.1111/j.1365-2966.2006.10588.x
• A Shack-Hartmann wavefront sensor projected on to the sky with reduced focal anisoplanatism
  Butterley, T., Love, G., Wilson, R., Myers, R., & Morris, T. (2006). A Shack-Hartmann wavefront sensor projected on to the sky with reduced focal anisoplanatism. Monthly Notices of the Royal Astronomical Society, 368(2), 837-843. https://doi.org/10.1111/j.1365-2966.2006.10160.x