We observed the optical and NIR counterpart of the recently discovered X-ray transient MAXI J1659-152 (Negoro et al. 2010, ATel #2873; Mangano et al. 2010, GCN #11296) with the REM telescope located in La Silla (Chile) in imaging mode using the V, R, I, J, H and K filters. Observations were carried out on 2009 Sept. 30, starting from 23:43 UT (MJD

A rapid timing analysis of Very Large Telescope (VLT)/ULTRACAM (optical) and RXTE (X-ray) observations of the Galactic black hole binary GX339-4 in the low/hard, post-outburst state of 2007 June is presented. The optical light curves in the r',g' and u' filters show slow (~20s) quasi-periodic variability. Upon this is superposed fast flaring

We have studied the quantitative morphology and structural parameters of the bright galaxy population in the Nordic Optical Telescope (NOT) sample, which consists of five clusters of galaxies within the redshift range 0.18 ≤ z ≤ 0.25, imaged in the central 0.5-2 Mpc in very good seeing conditions. We have obtained that the structural parameters of

This "Declaration" has aroused considerable support among astronomical librarians and has been translated into Italian and Spanish. We describe the contents of the Declaration, how it has progressed since its publication and its future prospects.

CBET 2487 available at Central Bureau for Astronomical Telegrams.

CBET 2487 available at Central Bureau for Astronomical Telegrams.