A Precision Cryogenic Positioning Stage for Detector Dithering and Flexure Compensation Article Swipe

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Stephen A. Smee , Stephen C. Hope , Randolph P. Hammond , Leon Aslan , Robert H. Barkhouser , Katherine G. Smee , Andrea Bianco , Christoph Birk , Maren Cosens , Aidan C. Gray , Michele Frangiamore , Albert C. Harding , Tyson Hare , Daniel D. Kelson , Gerrad Killion , Nicholas P. Konidaris , Alicia Lanz , Jacob McCloskey , Andrew B. Newman , Solange Ramirez , Gwen C. Rudie , Andrea Vanella , J. E. Williams ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2407.14493

This paper presents the design and technical progress of a precision X-Y stage for detector dithering and flexure compensation. The stage is being developed for use in the Magellan InfraRed Multi-Object Spectrograph, MIRMOS. MIRMOS is a very large Nasmyth mounted spectrograph containing a combination of refractive, reflective and diffractive optics mounted on a long cryogenic optical bench. The instrument utilizes five science cameras, each having a custom x-y stage to control the in-plane detector position within each camera, providing both dithering capability for improved sampling, and flexure compensation to correct for image motion that results from the gravity variant operation of the instrument. Designed to operate at 120~K, the stage will accurately control detector position in two orthogonal degrees of freedom, and have manual fine adjustment features to set detector tip, tilt and piston. The piezo-driven flexure stage provides high-resolution backlash-free motion of the detector and is very compact along the optical path, keeping camera length to a minimum. A magnetoresistive bridge provides position feedback in each degree of freedom, greatly reducing hysteresis, which is common in piezoelectric actuators. The system is designed to operate in open loop using a lookup table keyed to the Nasmyth rotator angle for flexure control. Here, the optomechanical design of the stage, electrical control system, and current performance results from early prototype efforts are presented and discussed.

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Dither Compensation (psychology) Stage (stratigraphy) Detector Optics Geodesy Physics Computer science Geology Computer vision Psychology Noise shaping Paleontology Psychoanalysis

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2407.14493
PDF: https://arxiv.org/pdf/2407.14493
OA Status: green
Related Works: 10
OpenAlex ID: https://openalex.org/W4402856767

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DOI: https://doi.org/10.48550/arxiv.2407.14493

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Title: A Precision Cryogenic Positioning Stage for Detector Dithering and Flexure Compensation

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Type: preprint

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Language: en

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Publication year: 2024

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Publication date: 2024-07-19

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Authors: Stephen A. Smee, Stephen C. Hope, Randolph P. Hammond, Leon Aslan, Robert H. Barkhouser, Katherine G. Smee, Andrea Bianco, Christoph Birk, Maren Cosens, Aidan C. Gray, Michele Frangiamore, Albert C. Harding, Tyson Hare, Daniel D. Kelson, Gerrad Killion, Nicholas P. Konidaris, Alicia Lanz, Jacob McCloskey, Andrew B. Newman, Solange Ramirez, Gwen C. Rudie, Andrea Vanella, J. E. Williams

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Landing page: https://arxiv.org/abs/2407.14493

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Concepts: Dither, Compensation (psychology), Stage (stratigraphy), Detector, Optics, Geodesy, Physics, Computer science, Geology, Computer vision, Psychology, Noise shaping, Paleontology, Psychoanalysis

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abstract_inverted_index.tip,	130
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abstract_inverted_index.table	191
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abstract_inverted_index.which	173
abstract_inverted_index.120~K,	107
abstract_inverted_index.MIRMOS	33
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abstract_inverted_index.bridge	161
abstract_inverted_index.camera	154
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abstract_inverted_index.custom	66
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abstract_inverted_index.design	4, 204
abstract_inverted_index.having	64
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abstract_inverted_index.lookup	190
abstract_inverted_index.manual	123
abstract_inverted_index.motion	92, 141
abstract_inverted_index.optics	49
abstract_inverted_index.stage,	207
abstract_inverted_index.system	180
abstract_inverted_index.within	75
abstract_inverted_index.MIRMOS.	32
abstract_inverted_index.Nasmyth	38, 195
abstract_inverted_index.camera,	77
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abstract_inverted_index.efforts	218
abstract_inverted_index.flexure	17, 86, 136, 199
abstract_inverted_index.gravity	97
abstract_inverted_index.greatly	170
abstract_inverted_index.keeping	153
abstract_inverted_index.mounted	39, 50
abstract_inverted_index.operate	105, 184
abstract_inverted_index.optical	55, 151
abstract_inverted_index.piston.	133
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abstract_inverted_index.rotator	196
abstract_inverted_index.science	61
abstract_inverted_index.system,	210
abstract_inverted_index.variant	98
abstract_inverted_index.Designed	103
abstract_inverted_index.InfraRed	29
abstract_inverted_index.Magellan	28
abstract_inverted_index.cameras,	62
abstract_inverted_index.control.	200
abstract_inverted_index.designed	182
abstract_inverted_index.detector	14, 73, 113, 129, 144
abstract_inverted_index.features	126
abstract_inverted_index.feedback	164
abstract_inverted_index.freedom,	120, 169
abstract_inverted_index.improved	83
abstract_inverted_index.in-plane	72
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abstract_inverted_index.refractive,	45
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abstract_inverted_index.piezo-driven	135
abstract_inverted_index.spectrograph	40
abstract_inverted_index.Spectrograph,	31
abstract_inverted_index.backlash-free	140
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abstract_inverted_index.piezoelectric	177
abstract_inverted_index.optomechanical	203
abstract_inverted_index.high-resolution	139
abstract_inverted_index.magnetoresistive	160
cited_by_percentile_year
countries_distinct_count	0
institutions_distinct_count	23
citation_normalized_percentile.value	0.22136978
citation_normalized_percentile.is_in_top_1_percent	False
citation_normalized_percentile.is_in_top_10_percent	False