Watching PrePNe Evolve: 15 Years of HST Observations
Multi-epoch HST images have been obtained for the pre planetary nebulae CRL618, CRL2688, and Hen3-1475. Each object shows clear and idiosyncratic expansion...
Water Vapor Monitoring at the Roque de LOS Muchachos Observatory
We present the first results from a long-term campaign of water vapor monitoring at the Roque de los Muchachos Observatory (Canary Islands, Spain). This...
Water vapour monitoring at the Roque de los Muchachos Observatory (1996-1998)
We present initial results from a water-vapour monitoring campaign initiated in 1996. A certain amount of caution must still be applied to the interpretation of...
Wave propagation and shock formation in diverse magnetic structures
Velocity oscillations measured simultaneously at the photosphere and the chromosphere of different solar magnetic features (sunspots, pores and facular regions)...
Wavefront Characterization Campaign at Paranal Using GSM, Mosp, Dimm-Mass Lusci and SCIDAR
In the frame of the EU funded ELT Design Study, a wavefront characterization campaign has been conducted at Paranal VLT Observatory in December 2007 involving...
Wavefront error measurements and alignment of CLASP2 telescope with a dual-band pass cold mirror coated primary mirror
"Chromospheric LAyer Spectro-Polarimeter (CLASP2)" is the next sounding rocket experiment of the "Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP)" that...