An automated telescope simulator test stand is built and initially tested to characterize robotic fiber positioners for stability under varying gravity vectors, targeting 1 μm position, 5 μm focus, and 0.4° tilt performance.
25,000 optical fiber positioning robots for next-generation cosmology,
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Presents initial design and first prototypes of robotic optical-relay positioners addressing ELT-scale challenges of relay optics, pupil pointing, and per-positioner ADCs for the MOSAIC instrument.
MUST is a planned 6.5m Stage-V spectroscopic survey telescope targeting 100M+ galaxies and quasars to z~5.5 for large-scale structure cosmology studies.
A focal plate prototype for Stage-5 telescope instruments shows that 5-axes machining can achieve the required tilt and focus tolerances.
IC-HCFs exhibit lower throughput loss than standard fibers under mechanical stress, indicating potential gains for blue-sensitive astronomical spectroscopy.
Thermal qualification tests on 6.2-mm-pitch fiber positioners confirm stable repeatability, backlash, and linearity across -20°C to 30°C with no degradation.
A prototype 15-positioner theta-phi module with 6.2 mm pitch was tested for repeatability, backlash, non-linearity, and tilt, with results compared to Stage-5 telescope design targets.
Performance tests of Trillium-based positioners for Stage-5 telescopes find mostly acceptable metrics with anomalies requiring mitigation in future prototypes.
citing papers explorer
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Characterizing robotic positioners under the influence of changing gravity vectors for future spectroscopic surveys
An automated telescope simulator test stand is built and initially tested to characterize robotic fiber positioners for stability under varying gravity vectors, targeting 1 μm position, 5 μm focus, and 0.4° tilt performance.
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MOSAIC at ELT: Design and First Prototyping of Novel Robotic Optical-Relay Positioners
Presents initial design and first prototypes of robotic optical-relay positioners addressing ELT-scale challenges of relay optics, pupil pointing, and per-positioner ADCs for the MOSAIC instrument.
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Focal Plate Prototyping for Modular Focal Planes of Stage-5 Instruments For Ground-Based Telescopes
A focal plate prototype for Stage-5 telescope instruments shows that 5-axes machining can achieve the required tilt and focus tolerances.
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Comparative Study of Hollow-Core and Standard Optical Fibers for Astronomy
IC-HCFs exhibit lower throughput loss than standard fibers under mechanical stress, indicating potential gains for blue-sensitive astronomical spectroscopy.
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Thermal Characterization of a 6-Positioner, 6.2-mm-Pitch Module for Stage-5 Telescopes
Thermal qualification tests on 6.2-mm-pitch fiber positioners confirm stable repeatability, backlash, and linearity across -20°C to 30°C with no degradation.
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Testing of a 15-Positioner Module Based on the MPS Design for Stage-5 Telescopes
A prototype 15-positioner theta-phi module with 6.2 mm pitch was tested for repeatability, backlash, non-linearity, and tilt, with results compared to Stage-5 telescope design targets.
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Performance Testing of a Trillium-based 21-Positioner Module for Stage-5 Telescopes
Performance tests of Trillium-based positioners for Stage-5 telescopes find mostly acceptable metrics with anomalies requiring mitigation in future prototypes.