329 citations · 838 across the 57 of their papers we have counts for
14 papers · 1 filter
Active shape correction of a thin glass/plastic X-ray mirror
D. Spiga, M. Barbera, S. Basso +9
Optics for future X-ray telescopes will be characterized by very large aperture and focal length, and will be made of lightweight materials like glass or plastic in order to keep t…
X-ray optical systems: from metrology to Point Spread Function
D. Spiga, L. Raimondi
One of the problems often encountered in X-ray mirror manufacturing is setting proper manufacturing tolerances to guarantee an angular resolution - often expressed in terms of Poin…
An expanded X-ray beam facility (BEaTriX) to test the modular elements of the ATHENA optics
D. Spiga, C. Pelliciari, E. Bonnini +4
Future large X-ray observatories like ATHENA will be equipped with very large optics, obtained by assembling modular optical elements, named X-ray Optical Units (XOU) based on the…
Analysis of microroughness evolution in X-ray astronomical multilayer mirrors by surface topography with the MPES program and by X-ray scattering
R. Canestrari, D. Spiga, G. Pareschi
Future hard X-ray telescopes (e.g. SIMBOL-X and Constellation-X) will make use of hard X-ray optics with multilayer coatings, with angular resolutions comparable to the achieved on…
LAMP: a micro-satellite based soft X-ray polarimeter for astrophysics
Rui She, Hua Feng, Fabio Muleri +19
The Lightweight Asymmetry and Magnetism Probe (LAMP) is a micro-satellite mission concept dedicated for astronomical X-ray polarimetry and is currently under early phase study. It…
Computation of the off-axis effective area of the New Hard X-ray Mission modules by means of an analytical approach
D. Spiga, V. Cotroneo
One of the most important parameters determining the sensitivity of X-ray telescopes is their effective area as a function of the X-ray energy. The computation of the effective are…
Angular resolution measurements at SPring-8 of a hard X-ray optic for the New Hard X-ray Mission
D. Spiga, L. Raimondi, A. Furuzawa +18
The realization of X-ray telescopes with imaging capabilities in the hard (> 10 keV) X-ray band requires the adoption of optics with shallow (< 0.25 deg) grazing angles to enhance…
Characterization of a flat superpolished mandrel prototype with hard (TiN / SiC) overcoating to enhance the surface durability
D. Spiga
A number of hard X-Ray (10 - 100 KeV) astronomical missions of near future will make use of multilayer-coated focusing mirrors. The technology based on Nickel electroformed replica…
Optical module HEW simulations for the X-ray telescopes SIMBOL-X, EDGE and XEUS
D. Spiga
One of the most important parameters defining the angular resolution of an X-ray optical module is its Half-Energy Width (HEW) as a function of the photon energy. Future X-ray tele…
HEW simulations and quantification of the microroughness requirements for X-ray telescopes by means of numerical and analytical methods
D. Spiga, G. Cusumano, G. Pareschi
Future X-ray telescopes like SIMBOL-X will operate in a wide band of the X-ray spectrum (from 0.1 to 80 keV); these telescopes will extend the optical performances of the existing…
Surface smoothness requirements for the mirrors of the IXO X-ray telescope
D. Spiga, G. Pareschi
The International X-ray Observatory (IXO) is a very ambitious mission, aimed at the X-ray observation of the early Universe. This makes IXO extremely demanding in terms of effectiv…
A magnetic diverter for charged particle background rejection in the SIMBOL-X telescope
D. Spiga, V. Fioretti, A. Bulgarelli +6
Minimization of charged particle background in X-ray telescopes is a well known issue. Charged particles (chiefly protons and electrons) naturally present in the cosmic environment…
Profile reconstruction of grazing-incidence X-ray mirrors from intra-focal X-ray full imaging
D. Spiga, S. Basso, M. Bavdaz +11
The optics of a number of future X-ray telescopes will have very long focal lengths (10 - 20 m), and will consist of a number of nested/stacked thin, grazing-incidence mirrors. The…
Characterization of multilayer stack parameters from X-ray reflectivity data using the PPM program: measurements and comparison with TEM results
D. Spiga, A. Mirone, G. Pareschi +6
Future hard (10 -100 keV) X-ray telescopes (SIMBOL-X, Con-X, HEXIT-SAT, XEUS) will implement focusing optics with multilayer coatings: in view of the production of these optics we…