10762 - Astronomical Optics

Academic Year 2019/2020

  • Docente: Bruno Marano
  • Credits: 7
  • SSD: FIS/05
  • Language: Italian
  • Teaching Mode: Traditional lectures
  • Campus: Bologna
  • Corso: First cycle degree programme (L) in Astronomy (cod. 8004)

Learning outcomes

Provide the student witha basic knowledge of geometrical and wave optics, with specific application to astronomical instrumentation and observations. Provide the student with the capability of evaluating the performances of simple optical systems

Course contents

Geometrical optics: reflection, refractrion, absorption, dispersion.

Thin lenses. Mirrors. Image formation.

Optical aberrations: chromatic, spheric; astygmatism, coma, distortion.

Optical instruments: the eye, the telescope.

Telescopes: scale, field, luminosity.  Newtonian, Cassegrain, Gregorian, Schmidt telescopes.

Introduction to the Fourier Tranform.

Wave optics, Huygens-Fresnel principle. Interference and diffraction. 

Resolution of an optical system. PSF. Sampling.

Light polarization.

The electromagnetis spectrum. Atmosferic absorption and refraction. The "Seeing". 

Modern X-ray, optical, radio- telescopes on earth and in  space (short account).

Optical lab.: Lenses and mirrors. Slit and wedge diffraction. Michelson interferometer.

Readings/Bibliography

Suggested:
Eugene Hecht - Optics - Addison Wesley. Very good reference textbook, more extended than the course. Suggestions for the study on this book are provided.

Or: Halliday, Resnick e Krane, Physics II, Wiley.

Available on site http://www.unibo.it/docenti/bruno.marano:

- PDF of presentations used in the lectures are available.

- Selection of problems

- instruction for the lab activity

are available on IOL: http://www.unibo.it/docenti/bruno.marano 

Teaching methods

Mostly conventional lectures on theory, integrated bysolution of problems and simple experiments.

Further exercises are suggested to the studentsfor personal training.

Optical lab: Assembly of optical systems on bench; related measurements. Bolometric measurement of the "Solar constant".

Assessment methods

a) solution of problems in written form;

b) evaluation of the lab activity report

c) final oral exam.

As a rule, the written exam consists of six short problems to be solved in two hours and a half. Use of texts is admitted.

 

Teaching tools

Blackboard, videoprojector. Optical laboratory.

Office hours

See the website of Bruno Marano