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dish metrology 1hydrogen intensity mapping 1photogrammetry 1radio interferometry 1systematic errors 1

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astro-ph.IM2026

Dish Assembly Precision for HIRAX

Jennifer Studer, Devin Crichton, Alexandre Refregier +16

The paper presents photogrammetry measurements of the first 28 HIRAX dishes, showing that dish surface deviations meet specifications while feed placement meets accuracy but not pr…