Sumários
Spectroscopy (class 2 of 3)
25 Março 2026, 17:00 • Bachar Wehbe
Introduction
to the operation of spectrometers and monochromators.
Study
of the dispersion of light, the properties of diffracting elements and how they
are used in monochromators and spectrographs. Spectral characterization of
non-monochromatic light and its analysis in bench top spectrographs.
Spectroscopy (class 2 of 3)
25 Março 2026, 15:00 • Alexandre Pereira Cabral
Introduction to the operation of spectrometers and monochromators.
Study of the dispersion of light, the properties of diffracting elements and how they are used in monochromators and spectrographs. Spectral characterization of non-monochromatic light and its analysis in bench top spectrographs.
Building a prism and grating Spectrographs.NIRCam: general
23 Março 2026, 14:00 • José Manuel Rebordão
FGS –
some details on the fcuntion of the TMA between finite conjugates, and to the
focusing pair of mirrors.
NIRCam:
Architecture of the instrument. Optical architecture and their main elements.
Lenses, materials. Integration of the coronograph in terms of mask placement
and FoV. Beam-splitter. Reference sources (for flat field and for image
quality) and their implementation. Description and analysis of the the filters
in the filter and pupil wheels.
The
Weak Lenses.
General
overview of the Slitness mode (WFSS) and of Time series observations (TSO).
NEXT
Grisms. Coronagraphy
OTE. FGS
20 Março 2026, 09:00 • José Manuel Rebordão
OTE: TMA architecture.
Flat FoV and its partition with POM’s. Pods. WFE maps, Strehl ratio. Examples.
The Fine Steering Mirror and the real image of the
PM. Sequence of real images of the mirrors.
FGS
and its heritage. Redundancy. SEU concept. Engineering subsystems and
criticality.
FGS
architecture, functions and its operational modes. Subarrays.
NEXT
NIRCam
Spectroscopy (class 1of 3)
18 Março 2026, 17:00 • Bachar Wehbe
Introduction
to the operation of spectrometers and monochromators.
Study
of the dispersion of light, the properties of diffracting elements and how they
are used in monochromators and spectrographs. Spectral characterization of
non-monochromatic light and its analysis in bench top spectrographs.