1. Imaging the sky in radio domain Andrzej Marecki Centre for Astronomy Copernicus University Toruń

2. Visible light is only a tiny part of the whole electromagnetic spectrum

3. Stellar spectra. Stars shine in optical domain.

4. Milky way galaxy – an optical image

5. Milky Way galaxy at 1420 MHz

6. Milky Way galaxy at 408 MHz

7. Some active galaxies are best visible in radio domain.

9. Professional camera has a large lens.

10. CCD (Charge-Coupled Device) matrix

12. Willard S. Boyle George E. Smith 2009 Pioneers of digital photography

13. Camera obscura

14. Diffraction

15. Airy disk

17. 100-inch Hooker telescope

18. Hubble Space Telescope

19. Radio telescope – principle of operation

22. 25-m radio telescope

24. 1.5GHz 20cm 2.3GHz 13cm 4.8GHz 6cm 8.4GHz 4cm 14GHz 2cm 23GHz 1.3cm 43GHz 7mm 86GHz 3mm 327MHz 90cm 610MHz 50cm

25. 32-m radio telescope near Toruń

27. „Focus box” of the 305-m Arecibo radio telescope

28. 25-m radio telescopes

33. Very Large Array

37. Synthesized (virtual) beam of the VLA

38. „Dirty” (left) and „clean” (right) VLA images

39. Martin Ryle (1918-1984)‏ inventor of radio astronomical interferometry 1974

40. M81 Group

44. MERLIN array

45. Very Long Baseline Interferometry (VLBI )‏ is an equivalent of Earth-sized radio telescope

46. VLBI – principle of operation

47. Very Long Baseline Array

48. European VLBI Network (EVN)‏

49. European VLBI Network

51. VLBI – observation

52. VLBI – correlation

53. 3.2 TB disk pack used for VLBI instead of tapes

54. Cygnus A - VLA versus VLBA

56. Supernova shell SN1993J

57. VLAEVN+MERLIN B0818+214