In a recent survey at 33 GHz for baryonic matter at large scales in the Corona Borealis Supercluster (CrB-SC) of galaxies (z = 0.07) using the Very Small Array interferometer (VSA), covering 24^2, two strongs decrements in temperature (CrB-B and CrB-H) near the centre of the supercluster were detected. The amplitudes are -157+/-27 and -230+/-23μK

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The various methods for studying in detail relevant stellar population parameters throught the integrated light are reviewed. The emphasis is given to the analysis based on absorption line-strength indices. The state-of-the-art of the stellar population synthesis models and methodologies is summarized. Finally some of the various uncertainties and

As part of a program to measure abundance ratios in stars beyond 15 kpc from the Galactic center, we have discovered a metal-poor star in the outer halo with a unique chemical signature. We originally identified it in the Sloan Extension for Galactic Understanding and Exploration survey as a distant metal-poor star. We obtained a follow-up spectrum

The INT photometric H-alpha Survey (IPHAS; http://www.iphas.org) is now near completion. A band of 10 degrees along the Northern Galactic Plane is being imaged in Hα, r' and i' filters with typically 1 arcsec resolution and a completeness limit better than r'=20 mag. IPHAS is filling in the currently existing gap in the Planetary Nebulae (PNe)

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