Target acquisition for multi-object spectroscopy with JWST NIRSpec
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Target acquisition for multi-object spectroscopy with JWST NIRSpec. / Keyes, Charles D.; Beck, Tracy L.; Pena-Guerrero, Maria; de Oliveira, Catarina Alves; Ferruit, Pierre; Jakobsen, Peter; Giardino, Giovanna; Sirianni, Marco; Boeker, Torsten; Birkmann, Stephan; Proffitt, Charles.
Observatory Operations: Strategies, Processes, and Systems VII. Vol. 10704 SPIE - International Society for Optical Engineering, 2018. 107041J (Proceedings of SPIE; No. 10704).Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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TY - GEN
T1 - Target acquisition for multi-object spectroscopy with JWST NIRSpec
AU - Keyes, Charles D.
AU - Beck, Tracy L.
AU - Pena-Guerrero, Maria
AU - de Oliveira, Catarina Alves
AU - Ferruit, Pierre
AU - Jakobsen, Peter
AU - Giardino, Giovanna
AU - Sirianni, Marco
AU - Boeker, Torsten
AU - Birkmann, Stephan
AU - Proffitt, Charles
PY - 2018/6/11
Y1 - 2018/6/11
N2 - NIRSpec is the flagship spectrograph for JWST in the 0.6 to 5.3 micron wavelength range. Observation with the Micro- Shutter Assembly (MSA) for multiobject spectroscopy (MOS) will use configurable shutters to form spectral slits and provide the first space-based MOS capabilities. The NIRSpec Micro-shutter Assembly Target Acquisition (MSATA) is an autonomous target acquisition scheme to acquire and position targets accurately with respect to the spectral slits. The method uses measured centroid positions of reference stars with accurately known relative positions across the target field for this process. MSATA performs not only linear offsets, but any required telescope orient (roll) correction to remove blind-pointing alignment error. The MSATA procedure can be used for most NIRSpec science and will be a prerequisite for most NIRSpec MOS mode observations. Astrometry relating the positions of science targets and candidate reference stars with a relative accuracy of 5 - 10 mas will be needed to deliver the best calibration accuracy of science sources. With this level of planning accuracy, the MSATA procedure should yield a final total pointing accuracy for NIRSpec MOS targets of <20 mas within the preselected 200 mas-wide MSA shutter. Here we present analysis of test cases using simulated datasets that were used to help define and check operations flow for NIRSpec MSATA.
AB - NIRSpec is the flagship spectrograph for JWST in the 0.6 to 5.3 micron wavelength range. Observation with the Micro- Shutter Assembly (MSA) for multiobject spectroscopy (MOS) will use configurable shutters to form spectral slits and provide the first space-based MOS capabilities. The NIRSpec Micro-shutter Assembly Target Acquisition (MSATA) is an autonomous target acquisition scheme to acquire and position targets accurately with respect to the spectral slits. The method uses measured centroid positions of reference stars with accurately known relative positions across the target field for this process. MSATA performs not only linear offsets, but any required telescope orient (roll) correction to remove blind-pointing alignment error. The MSATA procedure can be used for most NIRSpec science and will be a prerequisite for most NIRSpec MOS mode observations. Astrometry relating the positions of science targets and candidate reference stars with a relative accuracy of 5 - 10 mas will be needed to deliver the best calibration accuracy of science sources. With this level of planning accuracy, the MSATA procedure should yield a final total pointing accuracy for NIRSpec MOS targets of <20 mas within the preselected 200 mas-wide MSA shutter. Here we present analysis of test cases using simulated datasets that were used to help define and check operations flow for NIRSpec MSATA.
KW - JWST
KW - NIRSpec
KW - Target Acquisition
KW - multi-object spectroscopy
KW - Imaging
KW - TA
KW - MOS
KW - MSA
U2 - 10.1117/12.2313712
DO - 10.1117/12.2313712
M3 - Article in proceedings
VL - 10704
T3 - Proceedings of SPIE
BT - Observatory Operations
PB - SPIE - International Society for Optical Engineering
ER -
ID: 221834868