Deep ISOCAM view of the core of the lensing cluster A2390
  We have imaged the inner square arcminute of the well known lensing and cooling flow cluster A2390 (z = 0.23) down to a sensitivity of 65 and 130 microJy at 6.75 and 15 micronmetre, respectively. We report the first evidence of an active star-forming region in a cooling flow (at those wavelengths) and strong emission in the mid-IR from lensed galaxies located at z=0.9. 
L. Lemonon, M. Pierre, C. J. Cesarsky, D. Elbaz, R. Pello, G. Soucail   and L. Vigroux