SPACE OPTICS INSTRUMENTATION

Second cycle degree in AEROSPACE ENGINEERING

Campus: PADOVA

Language: English

Teaching period: First Semester

Lecturer: GIAMPIERO NALETTO

Number of ECTS credits allocated: 9


Syllabus
Prerequisites: Good knowledge of basic physics.
Examination methods: Slide projection. Lecture notes available before lecturing.
Course unit contents: Electromagnetic waves. Maxwell's equations, wave equation, electromagnetic spectrum.
Geometrical optics. Concept of ray, reflection and refraction laws. Object and image, ideal lens, paraxial optics. Thin lenses, imaging, ocular, astronomical and terrestrial telescopes. Flat and aspheric mirrors, conic function, spherical mirrors, image formation with mirrors. Aberrations.
Astronomical telescopes: Gregorian, Newtonian, Cassegrain, Dall-Kirkham, Ritchie-Chretien, Schmidt, Maksutov, Wolter. in Telescopes and diffraction, Airy function, angular resolution. PSF, reflectivity, obscuration, diffused light, materials.
Elements of interference theory of between waves and applications. Interference between light waves (principles). Interferometers. Principles of stellar interferometry. Interferometry N elements, the "long baseline interferometry, the" null-interferometry. "
Elements of diffraction and spectroscopy. Diffraction by a rectangular slit. Dispersing elements. Spectroscopic systems. Czerny-Turner configuration. Concave grating: Rowland mount, Offner and Wadsworth. Variable line spacing grating: Harada configuration. Echelle mounting. Iperspectrum.
Introduction to photoemission detectors. Photoelectric effect. Quantum efficiency. Photocathode, photomultiplier, channeltron, MCP. MCP detectors, readout anode single and multianode.
Introduction to semiconductor detectors. Atomic theory, semiconductors. Photodiodes and HCT. CCD operation and configurations. Passive and active CMOS (APS). Hybrid detectors.
The weather satellite Meteosat. Meteosat imaging mode, the payload, the telescope and the focal plane; MTP and MSG, SEVIRI. MTG; MTG instrumentation.
The remote sensing SPOT satellite. SPOT orbit spectral bands; HRG telescope and focal plane, push-broom mode, the "super mode" HRG, HRS, stereoscopic vision.
Wide Angle Camera for the Rosetta space mission. The WAC Rosetta, optical design, features, mirrors, theoretical optical performance, filters, shutter, tolerance analysis, thermal analysis, alignment set-up and calibration, measurement of the PSF, distortion, thermal-vacuum measurements, temperature depending focusing, integration. Flight performance.
The Hubble Space Telescope. Telescope, focal plane instruments, FOS, HRS, HSP, WF/PC1, FOC, COSTAR; WF/PC2, optical design, STIS, optical design, detector; NICMOS, optical design, dewars, optical quality; ACS, optical design, mechanical scheme, detectors. Servicing Mission 4 and present instruments.
The XMM Newton satellite. The multi-mirror telescopes. Instruments: the RGS spectrometer, EPIC cameras, the Optical Monitor.
The Herschel satellite. Description of the satellite. Focal plane instruments: the systems of imaging and spectroscopy PACS and SPIRE, the HIFI spectrometer.
The Fermi satellite. The Large Area Telescope and the GLAST Burst Monitor.
The SAR technique. Operation of radar applications, Doppler effect, the polarization of the radar beam; SAR technique, parameters, resolution in range and azimuth, basic configuration, data processing, synthetic aperture, image distortion, SAR stereoscopic topography, interferometric SAR. Applications.
The coronography solar satellite. The coronagraphs LASCO and UVCS on SOHO.