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Correcting Turbulence-induced Errors in Fiber Positioning for the Dark Energy Spectroscopic Instrument

Fuente: arXiv
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Auteurs principaux: Schlafly, E. F., Guy, J., Honscheid, K., Kent, S., Koposov, S. E., Aguilar, J., Ahlen, S., Bailey, S., Brooks, D., Claybaugh, T., Dawson, K., Doel, P., Fanning, K., Finkbeiner, D. P., Font-Ribera, A., Forero-Romero, J. E., Gontcho, S. Gontcho A, Gutierrez, G., Kirkby, D., Kisner, T., Kremin, A., Lasker, J., Landriau, M., Guillou, L. Le, Levi, M. E., de la Macorra, A., Martini, P., Meisner, A., Miquel, R., Moustakas, J., Niz, G., Prada, F., Rossi, G., Sanchez, E., Schubnell, M., Sharples, R., Sprayberry, D., Tarlé, G., Weaver, B. A., Zou, H.
Format: Preprint
Publié: 2024
Sujets:
Instrumentation and Methods for Astrophysics
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author Schlafly, E. F.
Guy, J.
Honscheid, K.
Kent, S.
Koposov, S. E.
Aguilar, J.
Ahlen, S.
Bailey, S.
Brooks, D.
Claybaugh, T.
Dawson, K.
Doel, P.
Fanning, K.
Finkbeiner, D. P.
Font-Ribera, A.
Forero-Romero, J. E.
Gontcho, S. Gontcho A
Gutierrez, G.
Kirkby, D.
Kisner, T.
Kremin, A.
Lasker, J.
Landriau, M.
Guillou, L. Le
Levi, M. E.
de la Macorra, A.
Martini, P.
Meisner, A.
Miquel, R.
Moustakas, J.
Niz, G.
Prada, F.
Rossi, G.
Sanchez, E.
Schubnell, M.
Sharples, R.
Sprayberry, D.
Tarlé, G.
Weaver, B. A.
Zou, H.
author_facet Schlafly, E. F.
Guy, J.
Honscheid, K.
Kent, S.
Koposov, S. E.
Aguilar, J.
Ahlen, S.
Bailey, S.
Brooks, D.
Claybaugh, T.
Dawson, K.
Doel, P.
Fanning, K.
Finkbeiner, D. P.
Font-Ribera, A.
Forero-Romero, J. E.
Gontcho, S. Gontcho A
Gutierrez, G.
Kirkby, D.
Kisner, T.
Kremin, A.
Lasker, J.
Landriau, M.
Guillou, L. Le
Levi, M. E.
de la Macorra, A.
Martini, P.
Meisner, A.
Miquel, R.
Moustakas, J.
Niz, G.
Prada, F.
Rossi, G.
Sanchez, E.
Schubnell, M.
Sharples, R.
Sprayberry, D.
Tarlé, G.
Weaver, B. A.
Zou, H.
contents Highly-multiplexed, robotic, fiber-fed spectroscopic surveys are observing tens of millions of stars and galaxies. For many systems, accurate positioning relies on imaging the fibers in the focal plane and feeding that information back to the robotic positioners to correct their positions. Inhomogeneities and turbulence in the air between the focal plane and the imaging camera can affect the measured positions of fibers, limiting the accuracy with which fibers can be placed on targets. For the Dark Energy Spectroscopic Instrument, we dramatically reduced the effect of turbulence on measurements of positioner locations in the focal plane by taking advantage of stationary positioners and the correlation function of the turbulence. We were able to reduce positioning errors from 7.3 microns to 3.5 microns, speeding the survey by 1.6% under typical conditions.
format Preprint
id arxiv_https___arxiv_org_abs_2407_08026
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Correcting Turbulence-induced Errors in Fiber Positioning for the Dark Energy Spectroscopic Instrument
Schlafly, E. F.
Guy, J.
Honscheid, K.
Kent, S.
Koposov, S. E.
Aguilar, J.
Ahlen, S.
Bailey, S.
Brooks, D.
Claybaugh, T.
Dawson, K.
Doel, P.
Fanning, K.
Finkbeiner, D. P.
Font-Ribera, A.
Forero-Romero, J. E.
Gontcho, S. Gontcho A
Gutierrez, G.
Kirkby, D.
Kisner, T.
Kremin, A.
Lasker, J.
Landriau, M.
Guillou, L. Le
Levi, M. E.
de la Macorra, A.
Martini, P.
Meisner, A.
Miquel, R.
Moustakas, J.
Niz, G.
Prada, F.
Rossi, G.
Sanchez, E.
Schubnell, M.
Sharples, R.
Sprayberry, D.
Tarlé, G.
Weaver, B. A.
Zou, H.
Instrumentation and Methods for Astrophysics
Highly-multiplexed, robotic, fiber-fed spectroscopic surveys are observing tens of millions of stars and galaxies. For many systems, accurate positioning relies on imaging the fibers in the focal plane and feeding that information back to the robotic positioners to correct their positions. Inhomogeneities and turbulence in the air between the focal plane and the imaging camera can affect the measured positions of fibers, limiting the accuracy with which fibers can be placed on targets. For the Dark Energy Spectroscopic Instrument, we dramatically reduced the effect of turbulence on measurements of positioner locations in the focal plane by taking advantage of stationary positioners and the correlation function of the turbulence. We were able to reduce positioning errors from 7.3 microns to 3.5 microns, speeding the survey by 1.6% under typical conditions.
title Correcting Turbulence-induced Errors in Fiber Positioning for the Dark Energy Spectroscopic Instrument
topic Instrumentation and Methods for Astrophysics
url https://arxiv.org/abs/2407.08026

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