1. HOBBS OBSERVATORY ASTRONOMICAL SERIES
What is Radio Astronomy?

8. G. Marconi

9. Carl Jansky

11. Jansky at his Antenna

13. Young Grote Reber

18. Reber's Antenna at Green Bank, WV.

20. Ewen/Purcells

22. “DOC” Ewen in his Lab

25. Fluorescent Noise Generator

29. “DOC” Ewen with his Feed Horn

30. Dr. John Kraus

31. OSU's “Big Ear”

32. Parabola – 360' X 70'

33. Movable Flat Reflector
340' X 100'

34. Slant Height -36 deg. / +64 deg.

35. Ferris Wheel

36. Twin Feed Horns
Freq. = Mhz

37. Feed Horn Tracking System
1 hour object tracking

38. Green Bank 300' Steerable Parabolic Antenna

39. Mechanical Failure

40. Robert C. Byrd Telsecope
100 X 110 Meters
Steerable

46. Moon Imaged to depth of 10'
By Byrd Telescope

48. Green Bank Interferometer

51. Aricebo Radio Telescope
1000'

52. Goldstone DSN

53. ERAC Complex, Mannheim, GE

54. Pisgau Research Institute

55. Square Kilometer Array Interferometer

61. Milky Way Radio Continuum 408 Mhz

63. Cas A

64. Cas A X-ray

65. Cas A 90 Ghz

66. Cas A enhanced by Cray X-MP computer

71. Amateur Inteferometer using Satellite Dishes

75. E R A C

77. CVAS 5.1 meter Dish

78. 775 Mhz Downconverter

80. WOJB 5.1 meter Dish

81. Future CVAS 30.5m (100') Interferometer

82. Muon Generation in the Atmosphere

83. Basic Muon Detector

85. Proposed Very Long Baseline (VLBA) Interferometer