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Astrometric Calibration and Performance of the Dark Energy Spectroscopic Instrument Focal Plane

  • Authors: S. Kent, E. Neilsen, K. Honscheid, D. Rabinowitz, E. F. Schlafly, J. Guy, D. Schlegel, J. García-Bellido, T. S. Li, E. Sanchez, J. Silber, J. Aguilar, S. Ahlen, D. Brooks, T. Claybaugh, A. de la Macorra, P. Doel, D. J. Eisenstein, K. Fanning, A. Font-Ribera, J. E. Forero-Romero, S. Gontcho A. Gontcho, J. Jimenez, D. Kirkby, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, M. E. Levi, C. Magneville, M. Manera, P. Martini, A. Meisner, R. Miquel, J. Moustakas, J. Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, M. Rezaie, A. J. Ross, G. Rossi, M. Schubnell, H. Seo, Gregory Tarlé, B. A. Weaver, R. Zhou, Z. Zhou, H. Zou

S. Kent et al 2023 The Astronomical Journal 166 .

  • Provider: AAS Journals

Caption: Figure 7.

Astrometric residuals per GFA as a function of the position angle with respect to the zenith (measured CCW around the DESI focal plane) in the CCD X (red) and Y (blue) directions for a set of fields in the SW at zenith distance 45°. Solid lines are a model fit.

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