000008083 001__ 8083 000008083 005__ 20260318153742.0 000008083 037__ $$aDATASET-2026-0022 000008083 100__ $$aClette, Frédéric 000008083 245__ $$aUSET whole-disk images - L0 000008083 260__ $$c2025 000008083 520__ $$aThe USET station hosts since 2002 three modern telescopes equipped with digital cameras recording full-disk images of the Sun in three different parts of the visible-light spectrum: broad-band white-light to observer the photosphere, and two telescopes with narrow-band filters (H-alpha line at 656.3 nm and Ca II K line at 393.37 nm) to monitor the chromosphere, where solar eruptive phenomena can be detected. The image file format is FITS. 000008083 594__ $$aSTCE 000008083 6531_ $$aUSET 000008083 6531_ $$aSunspot 000008083 6531_ $$aPhotosphere 000008083 6531_ $$aChromosphere 000008083 700__ $$aBechet, Sabrina 000008083 700__ $$aLemaître, Olivier 000008083 700__ $$aBoulvin, Olivier 000008083 700__ $$aLefèvre, Laure 000008083 700__ $$aVandekerckhove, Joan 000008083 700__ $$aVong, Philippe 000008083 8560_ $$fsabrina.bechet@ksb-orb.be 000008083 85642 $$ahttps://www.sidc.be/uset/data/cameras/output_img/FTS/L0/ 000008083 980__ $$aDATASET