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Between 2000 June and September an exceptional variability phase occurred in the peculiar F-type hypergiant Rho Cas, when the V-brightness dimmed by at least a full magnitude. The star recovered from this deep minimum by 2001 April. It is the third outburst of Rho Cas on record in the last century. We observe TiO absorption bands in high-resolution

New results on the mid-IR emission of Seyfert galaxies are presented. The observations were performed using the TIMMI-2 instrument at the 3.6 m ESO telescope. We have obtained diffraction-limited images. In some cases the emission can be resolved and varies with wavelength. The relevance for these studies for CANARICAM is briefly discussed.

The techniques and software tools developed for the reduction and analysis of ISO-CAM/PHOT data with the LARI method are presented together with some highlights from the results obtained thanks to their application to different fields. Designed for the detection of faint sources in ISO raster observations, such method is based on the assumption of

The planning of the ISOPHOT (Lemke et al. 1996) calibration during the Performance Verification (PV) phase, with its 4 day turn-around cycle, required mission planning tools in the hands of the Instrument Dedicated Team (IDT). We developed a system, that gave full command of all instrument functions and which allowed planning of the observations

Interaction can be the main mechanism that triggers star formation in Wolf-Rayet galaxies. The compact group HCG 31 has one of this objects, NGC 1741. We present new observations of this compact interacting group, in order to analyse the physical conditions and chemical composition of the ionized gas, as well as to estimate the ages of the