Figure 8 from The Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) Survey Design, Reductions, and Detections

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The Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) Survey Design, Reductions, and Detections

Authors: Karl Gebhardt, Erin Mentuch Cooper, Robin Ciardullo, Viviana Acquaviva, Ralf Bender, William P. Bowman, Barbara G. Castanheira, Gavin Dalton, Dustin Davis, Roelof S. de Jong, D. L. DePoy, Yaswant Devarakonda, Sun Dongsheng, Niv Drory, Maximilian Fabricius, Daniel J. Farrow, John Feldmeier, Steven L. Finkelstein, Cynthia S. Froning, Eric Gawiser, Caryl Gronwall, Laura Herold, Gary J. Hill, Ulrich Hopp, Lindsay R. House, Steven Janowiecki, Matthew Jarvis, Donghui Jeong, Shardha Jogee, Ryota Kakuma, Andreas Kelz, W. Kollatschny, Eiichiro Komatsu, Mirko Krumpe, Martin Landriau, Chenxu Liu, Maja Lujan Niemeyer, Phillip MacQueen, Jennifer Marshall, Ken Mawatari, Emily M. McLinden, Shiro Mukae, Gautam Nagaraj, Yoshiaki Ono, Masami Ouchi, Casey Papovich, Nao Sakai, Shun Saito, Donald P. Schneider, Andreas Schulze, Khavvia Shanmugasundararaj, Matthew Shetrone, Chris Sneden, Jan Snigula, Matthias Steinmetz, Benjamin P. Thomas, Brianna Thomas, Sarah Tuttle, Tanya Urrutia, Lutz Wisotzki, Isak Wold, Gregory Zeimann, and Yechi Zhang

2021 The Astrophysical Journal 923 217.

Provider: AAS Journals

Caption: Figure 8.

Accuracy in arcseconds of the focal plane center against the number of stars used for the astrometric solution. These data are for HETDEX observations for all of HDR2. The color corresponds to the year, where black is for 2017, red for 2018, green for 2019, and blue for 2020. The 2017 data had far fewer units installed and therefore fewer stars, which leads to the increased astrometric uncertainty.

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