Sumários
Introduction to orbit mechanics - I
5 Novembro 2024, 08:00 • André Maria da Silva Dias Moitinho de Almeida
- Orbit Description
- Ground traces
- Orbit description: Keplerian elements
- Orbit Observation and determination:
- Two/Three Line Elements (TLSs)
- Simplified Perturbation models (SGP, SGP4, SDP4, SGP8 and SDP8)
Telescopes, instruments and astronomical observatories - III
31 Outubro 2024, 11:30 • André Maria da Silva Dias Moitinho de Almeida
- Active optics
- Comparison of primary mirror sizes and the evolution of their size.
- Presentation of some of the best observatories in the world: Paranal, Mauna Kea, La Palma
- The great telescopes of the next decade: the Extremely Large Telescopes, E-ELT, TMT and GMT
- Astronomical observations in space. Reasons and presentation of recent ESA missions.
- Radio telescopes (single dish and interferometry)
- High energy observations: X-rays and gamma rays
CCD image processing (Part IV)
29 Outubro 2024, 09:00 • André Maria da Silva Dias Moitinho de Almeida
Shutter effects
- Creation and analysis of shutter timing images
- High frequency filtering (noise filtering): Boxcar and Gaussian convolution filtering
- Correction of shutter timing in flatfield and object images
Telescopes, instruments and astronomical observatories - II
29 Outubro 2024, 08:00 • André Maria da Silva Dias Moitinho de Almeida
- Overcoming the effect of turbulence: Adaptive optics, laser guide stars
- Reflecting telescopes and variations on their design.
- Optical off-axis distortions
Telescopes, instruments and astronomical observatories (or instruments and technologies for astronomical observation) - I
24 Outubro 2024, 11:30 • André Maria da Silva Dias Moitinho de Almeida
- What does a telescope do?
- Collecting area and its effect on light concentration and resolution. Diffraction limit concept.
- Refracting telescopes.
- Effects of atmospheric turbulence in the acquisition of images of space.
Further reading: Chap 2 and 3 of McLean (Electronic Imaging in Astronomy)