2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/4411We present new data of the Crab pulsar and its environment. Images taken in the infrared with ISAAC allow us to measure the pulsar spectrum and to reveal the red knot close to the pulsar. Complementary optical data from VLT and HST are presented. The full article, with full resolution nice color images, is presented in Messenger, 107, 3212 pages, 7 figures (here mainly submitted as jpeg), Full version in Messenger, 107, 32Astrophysicstext