Preliminary results on the Extinction and Night Sky Background in UBV on La Silla and ALMA site

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/118498We report on measurements of the extinction in the U, B & V bands and of the NSB (Night Sky Background) during 2 dark periods on La Silla Observatory and at 4000-5000m on the ALMA site using an UV optimized 25 cm portable telescope.9 pages, 15 figuresAstrophysicsPreliminary results on the Extinction and Night Sky Background in UBV on La Silla and ALMA sitetext