References of "Pompei, Emanuela"
     in
Bookmark and Share    
Full Text
See detailTowards Precision Photometry with FORS: A Status Report
Freudling, Wolfram; Møller, Palle; Patat, Ferdinando et al

in The Messenger (2007), 128

The two FOcal Reducer and low-dis-persion Spectrographs (FORS) are the primary imaging instruments for the VLT. Because they are not direct imaging instruments, the accuracy of photometry which can ... [more ▼]

The two FOcal Reducer and low-dis-persion Spectrographs (FORS) are the primary imaging instruments for the VLT. Because they are not direct imaging instruments, the accuracy of photometry which can routinely be obtained is limited by significant sky concentration and other effects. This article reports on the progress of a long-term project to improve the photometric calibration of the FORS instruments. [less ▲]

Detailed reference viewed: 8 (0 ULg)
Full Text
See detailFORS1 is getting Blue: New Blue Optimised Detectors and High Throughput Filters
Szeifert, Thomas; Reiss, Roland; Baksai, Pedro et al

in The Messenger (2007), 128

Ground-based observations in the ultraviolet part of the electromagnetic spectrum are notoriously difficult owing to absorption of the atmosphere, of optical elements and the poorer efficiency of ... [more ▼]

Ground-based observations in the ultraviolet part of the electromagnetic spectrum are notoriously difficult owing to absorption of the atmosphere, of optical elements and the poorer efficiency of detectors. Now that CCD detectors with excellent UV response and cosmetic quality have become available, it was time to optimise FORS1 for imaging, low-resolution spectroscopic and polarimetric observations in the blue-UV. As a bonus, a new set of broadband filters with very high trans-mission and carefully defined filter bands were installed. [less ▲]

Detailed reference viewed: 6 (0 ULg)
Full Text
See detailDynamical modeling of the Deep Impact dust ejecta cloud
Bonev, Tanyu; Ageorges, Nancy; Bagnulo, Stefano et al

Report (2007)

The collision of Deep Impact with comet 9P/Tempel 1 generated a bright cloud of dust which dissipated during several days after the impact. The brightness variations of this cloud and the changes of its ... [more ▼]

The collision of Deep Impact with comet 9P/Tempel 1 generated a bright cloud of dust which dissipated during several days after the impact. The brightness variations of this cloud and the changes of its position and shape are governed by the physical properties of the dust grains. We use a Monte Carlo model to describe the evolution of the post-impact dust plume. The results of our dynamical simulations are compared to the data obtained with FORS2, the FOcal Reducer and low dispersion Spectrograph for the VLT of the European Southern Observatory (ESO), to derive the particle size distribution and the total amount of material contained in the dust ejecta cloud. [less ▲]

Detailed reference viewed: 23 (2 ULg)
Full Text
See detailDeep Impact at ESO Telescopes
Kaufl, Hans-Ullrich; Ageorges, Nancy; Bagnulo, Stefano et al

in The Messenger (2005), 121

This article is a first summary of the observations done with ESO telescopes and instrumentation in the context of NASA's Deep Impact (DI) space mission. The ESO observers were part of an extremely active ... [more ▼]

This article is a first summary of the observations done with ESO telescopes and instrumentation in the context of NASA's Deep Impact (DI) space mission. The ESO observers were part of an extremely active, communicative and thus successful worldwide network of observers. Through this network all information was freely exchanged and highlights are reported here as well. [less ▲]

Detailed reference viewed: 17 (2 ULg)