This instrument, the NN-explore Exoplanet Stellar Speckle Imager, was built at NASA's Ames Research Center in Mountain View, California. SCSU provided the optical design, based on our experience with DSSI. NESSI replaced DSSI at the WIYN Telescope in 2016. In addition to the small field of view for speckle work, NESSI also has a wide field mode, which can be used in a range of imaging projects.
Also built by NASA at the Ames Research Center, these instruments will be permanently mounted at the GCAL port of the Gemini North and South telescopes. Like NESSI, these instruments have two channels in operation simultaneously, and two choices for field of view: speckle and wide-field modes. Our group provided the optical design. They will be workhorse instruments in obtaining high-resolution imaging data of exoplanet host stars in support of the TESS planet-finding mission.
Other Activities. We collaborate with the University of Virginia and Lowell Observatory in prototyping new ideas for high-resolution imaging systems.
M.S. Theses and Projects
Ryan LaRue, Performance of an 8-Channel Timing Correlator for Photon Counting, M.S. Graduate Project, 2016.
János Löbb, Speckle Image Enhancement Using Recorded Shack-Hartmann Wavefront Sensor Data, M.S. Thesis, 2016.
Clark, C. A., van Belle, G. T., Horch, E. P., Trilling, D. E., Hartman, Z. D., Collins, M., von Braun, K., Gehring, J., "The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI)" SPIE Proceedings, 11446, Optical and Infrared Interferometry and Imaging VII, 114462A (2020).
J. W. Davidson, Jr., E. P. Horch, and S. R. Majewski, "Speckle imaging through a coherent fiber bundle," SPIE Proceedings, 10701, Optical and Infrared Interferometry and Imaging VI, 107012U (2018).
E. P. Horch, S. A. Weiss, J. D. Rupert, R. LaRue, P. Peronio, I. Rech, A. Gulinatti, "Prospects for wireless optical intensity interferometry with the Southern Connecticut stellar interferometer," SPIE Proceedings, 10701, Optical and Infrared Interferometry and Imaging VI, 107010Y (2018).