Calendar

Speaker: Elisa Guerriero (UNIPA)

Titolo: Development polishing process for bare aluminum mirrors to ARIEL space mission

Abstract: ARIEL is the 4th medium-class mission of ESA’s Cosmic Vision Programme to see and to study the exoplanets’ atmospheres in VIS/IR. The technical innovation of the project is the use of bare aluminum for the mirrors. This material is light, cheap, and available in large quantities, but difficult to polish because it is not very dense. In this seminar, I will talk about my work at Media Lario S.r.l. for the development of the aluminum polishing process, the critical issues and the results obtained.

Speaker: Darius Modirrousta Galian (UNIPA)

Titolo: Exploring Super-Earth Surfaces: Albedo of Near-Airless Magma Ocean Planets and Topography

Abstract:

Speaker: Salvatore Sciortino (INAF)

Titolo: A prototype Palermo- Wavelet Detection Code for the
ATHENA WFI: investigating the effect on detection of telescope (or lack of) baffle
and other new challenges posed by very deep exposures of a large area telescope

Abstract:

I will discuss the motivations for and the initial results of a prototype
version of the so-called Pwedetect code for the Athena WFI.  I will discuss the
use of this prototype for assessing the effect of stray-light in the detection
of weak sources with Athena and results from an on-going extensive set of
simulations that have already pinpoint some of the new challenges that the WFI
poses with respect to the past and current generation of X-ray imaging detectors.

Titolo:

Dalla Società degli Spettroscopisti Italiani alla Società Astronomica Italiana: storia della SAIt

Abstract:

Cent’anni fa, nel 1920, nel corso di una riunione tenutasi all’Accademia dei Lincei, nasceva la Società Astronomica Italiana, come risultato della trasformazione della Società degli Spettroscopisti Italiani. In questo talk saranno ripercorsi i passaggi salienti che hanno portato alla nascita della SAIt, con un breve excursus sui suoi primi cinquant’anni di vita.