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Aug 2026

VLTI system upgrades: recent engineering progress and future developments

Over the past six years, the VLTI has undergone major upgrades, significantly improving its stability, sensitivity, and operational reliability. This has enabled the highest-angular-resolution images of stars orbiting our Galactic Center, high-precision interferometric astrometric measurements of exoplanet systems, and...

Luis Esteras Otal, J. Abad, R. Abuter et al. · 3 citations
Aug 2026

Error budget for tip/tilt retrieval from laser guide stars using the propagation-delay method

The low density of sufficiently bright natural guide stars (NGS) remains a key limitation for sky coverage in adaptive optics (AO) systems. Partial recovery of tip/tilt from Laser Guide Stars (LGS) could increase NGS integration times, potentially enabling full sky coverage. While the absolute tip/tilt is not detectabl...

J. Böttger, R. Holzlöhner, F. P. Bustos et al. · 0 citations

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