Heejoo Choi's guest appearances

Heejoo Choi

The Spotlight Report

David Shafer

Bob Parks

Kris Ford

Erin McDermott

Eric Herman

Lisa Li

Shuang Wu

John Koshel

Henry Quach

Christine Bradley

Patrick Hagar

Edward LaVilla

Abdullah Zafar

Samuel Nerenberg

Bose Einstein

OwlTail

In this episode, I sat down with Heejoo Choi. Heejoo recently won the Kevin P. Thompson Optical Design Innovator Award He won the award for an innovative UV cross-dispersion space telescope and engineering of a laser-truss LBT metrology system. He is currently an assistant research professor at the James C. Wyant College of Optical Sciences and an Optical Scientist at the Large Binocular Telescope. Heejoo discusses the motivations for why innovative designs were required in the LBT metrology system as well as the Hyperion cross-dispersion space telescope. He goes into what drove the design choices and how that impacted the system performance overall. These are both cutting-edge optical designs so I am sure the audience will have a lot to explore in both. You can contribute to help support The Spotlight Report! Youtube video version here. Resources: 1. Andrew Rakich, Heejoo Choi, Christian Veillet, John M. Hill, Matthieu Bec, Yang Zhang, Trenton Brendel, Breann Sitarski, Michael Gardiner, Dae Wook Kim, Stephanie Rodriguez, "A laser-truss based optical alignment system on LBT," Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114450R (13 December 2020); https://doi.org/10.1117/12.2558013 2. Heejoo Choi, Isaac L. Trumper, Yi-Ting Feng, Hyukmo Kang, Joel Berkson, Haeun Chung, Erika T. Hamden, Dae Wook Kim, "Long-slit cross-dispersion spectroscopy for Hyperion UV space telescope," J. Astron. Telesc. Instrum. Syst. 7(1) 014006 (12 March 2021) https://doi.org/10.1117/1.JATIS.7.1.014006   Link to read paper ungated--- Support this podcast: https://podcasters.spotify.com/pod/show/the-spotlight-report/support

In this episode, I sat down with Heejoo Choi. Heejoo recently won the <a href="(https://www.optica.org/en-us/get_involved/awards_and_honors/awards/award_descriptions/kevinthompson/" rel="nofollow" target="_blank">Kevin P. Thompson Optical Design Innovator Award</a> He won the award for an innovative UV cross-dispersion space telescope and engineering of a laser-truss LBT metrology system. He is currently an assistant research professor at the James C. Wyant College of Optical Sciences and an Optical Scientist at the Large Binocular Telescope. Heejoo discusses the motivations for why innovative designs were required in the LBT metrology system as well as the Hyperion cross-dispersion space telescope. He goes into what drove the design choices and how that impacted the system performance overall. These are both cutting-edge optical designs so I am sure the audience will have a lot to explore in both. You can <a href="https://anchor.fm/the-spotlight-report/support" rel="nofollow" target="_blank">contribute</a> to help support The Spotlight Report! Youtube video version <a href="https://youtu.be/kKYtmMwAT6U" rel="nofollow" target="_blank">here</a>. Resources: 1. Andrew Rakich, Heejoo Choi, Christian Veillet, John M. Hill, Matthieu Bec, Yang Zhang, Trenton Brendel, Breann Sitarski, Michael Gardiner, Dae Wook Kim, Stephanie Rodriguez, "A laser-truss based optical alignment system on LBT," Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114450R (13 December 2020); <a href="https://doi.org/10.1117/12.2558013" rel="nofollow" target="_blank">https://doi.org/10.1117/12.2558013</a> 2. Heejoo Choi, Isaac L. Trumper, Yi-Ting Feng, Hyukmo Kang, Joel Berkson, Haeun Chung, Erika T. Hamden, Dae Wook Kim, "Long-slit cross-dispersion spectroscopy for Hyperion UV space telescope," J. Astron. Telesc. Instrum. Syst. 7(1) 014006 (12 March 2021) <a href="https://doi.org/10.1117/1.JATIS.7.1.014006" rel="nofollow" target="_blank">https://doi.org/10.1117/1.JATIS.7.1.014006</a> <a href="http://www.loft.optics.arizona.edu/documents/journal_articles/Long-slit_cross-dispersion_spectroscopy_for_Hyperion_UV_space_telescope.pdf" rel="nofollow" target="_blank">Link to read paper ungated</a>--- Support this podcast: <a href="https://podcasters.spotify.com/pod/show/the-spotlight-report/support" rel="payment nofollow" target="_blank">https://podcasters.spotify.com/pod/show/the-spotlight-report/support</a>

Heejoo Choi on Innovative Optical Designs

This month Dr. Heejoo Choi sat down to discus active and adaptive optics measures utilized in a range of astronomical telescopes. Specifically, Dr. Choi’s work brings him into frequent contact with a unique subset of astronomical optics known as ‘extremely large telescopes’, which are designated as having a clear aperture larger than 10 meters. Dr. Choi explains what some of the tools and devices are that allow for keeping such massive optics and structures aligned throughout long exposure sessions and in variable environments. Related Reading:Dr. Heejoo Choi Profile: http://www.loft.optics.arizona.edu/members/post-doc/heejoo-choi/ Nonlinear Optics: https://en.wikipedia.org/wiki/Nonlinear_optics Large Binocular Telescope Observatory (LBT): http://www.lbto.org/ What are Active and Adaptive Optics: https://www.eso.org/sci/facilities/develop/ao/what_ao.html Telescope Seeing Limit: https://en.wikipedia.org/wiki/Astronomical_seeing Reference laser star-ARGOS for LBT: http://www.mpe.mpg.de/ir/argos Econtalk Gerd Gigerenzer on Gut Feelings: https://www.econtalk.org/gerd-gigerenzer-on-gut-feelings/  European Extremely Large Telescope (E-ELT): https://www.eso.org/sci/facilities/eelt/ Thirty Meter Telescope (TMT): https://www.tmt.org/ NASA Space Borne Balloon Telescopes: https://asd.gsfc.nasa.gov/balloon/Wikipedia on Space Balloon Telescopes: https://en.wikipedia.org/wiki/Balloon-borne_telescope--- Support this podcast: https://podcasters.spotify.com/pod/show/the-spotlight-report/support

This month Dr. Heejoo Choi sat down to discus active and adaptive optics measures utilized in a range of astronomical telescopes. Specifically, Dr. Choi’s work brings him into frequent contact with a unique subset of astronomical optics known as ‘extremely large telescopes’, which are designated as having a clear aperture larger than 10 meters. Dr. Choi explains what some of the tools and devices are that allow for keeping such massive optics and structures aligned throughout long exposure sessions and in variable environments. Related Reading: Dr. Heejoo Choi Profile: <a href="http://www.loft.optics.arizona.edu/members/post-doc/heejoo-choi/" rel="nofollow" target="_blank">http://www.loft.optics.arizona.edu/members/post-doc/heejoo-choi/</a> Nonlinear Optics: <a href="https://en.wikipedia.org/wiki/Nonlinear_optics" rel="nofollow" target="_blank">https://en.wikipedia.org/wiki/Nonlinear_optics</a> Large Binocular Telescope Observatory (LBT): <a href="http://www.lbto.org/" rel="nofollow" target="_blank">http://www.lbto.org/</a> What are Active and Adaptive Optics: <a href="https://www.eso.org/sci/facilities/develop/ao/what_ao.html" rel="nofollow" target="_blank">https://www.eso.org/sci/facilities/develop/ao/what_ao.html</a> Telescope Seeing Limit: <a href="https://en.wikipedia.org/wiki/Astronomical_seeing" rel="nofollow" target="_blank">https://en.wikipedia.org/wiki/Astronomical_seeing</a> Reference laser star-ARGOS for LBT: <a href="http://www.mpe.mpg.de/ir/argos" rel="nofollow" target="_blank">http://www.mpe.mpg.de/ir/argos</a> Econtalk Gerd Gigerenzer on Gut Feelings: <a href="https://www.econtalk.org/gerd-gigerenzer-on-gut-feelings/" rel="nofollow" target="_blank">https://www.econtalk.org/gerd-gigerenzer-on-gut-feelings/</a> European Extremely Large Telescope (E-ELT): <a href="https://www.eso.org/sci/facilities/eelt/" rel="nofollow" target="_blank">https://www.eso.org/sci/facilities/eelt/</a> Thirty Meter Telescope (TMT): <a href="https://www.tmt.org/" rel="nofollow" target="_blank">https://www.tmt.org/</a> NASA Space Borne Balloon Telescopes: <a href="https://asd.gsfc.nasa.gov/balloon/" rel="nofollow" target="_blank">https://asd.gsfc.nasa.gov/balloon/</a> Wikipedia on Space Balloon Telescopes: <a href="https://en.wikipedia.org/wiki/Balloon-borne_telescope" rel="nofollow" target="_blank">https://en.wikipedia.org/wiki/Balloon-borne_telescope</a> --- Support this podcast: <a href="https://podcasters.spotify.com/pod/show/the-spotlight-report/support" rel="payment nofollow" target="_blank">https://podcasters.spotify.com/pod/show/the-spotlight-report/support</a>

Dr Heejoo Choi On Large Astronomical Optics