STEREO/EUVI 304 Å  a) and b) and EIT 195 Å i) images illustrating a flare and a filament eruption, EUVI 195 Å  c) and d) and EIT 195 Å j) running ratio images, showing an EUV wave, and COR1 e) and f), COR2 g) and h), LASCO C2 k) and C3 l) running difference images, displaying a CME, on February 7, 2010. The upper panels are observations by the STEREO A satellite, the middle panels those by the STEREO B satellite, and the lower panels those by the SOHO satellite. The FOVs are 800′′  ×  800′′ in a)–d), 3.1   R_⊙ × 3.1   R_⊙ in e) and f), 7.7   R_⊙ × 7.7   R_⊙ in g) and h), 1.4   R_⊙ × 1.4   R_⊙ in i) and j), 12.7   R_⊙ × 12.7   R_⊙ in k), and 35   R_⊙ × 35   R_⊙ in l), respectively.