1. Akira Computer Systems Keizo NONAKA What Students Can Learn From Making the Radio Telescope The Report from Kameoka High School

2. Keizo NONAKA at GHOU2007 Aim Based on the activities in 2006 Making the radio telescope like making optical telescopes by students Day time usage Observing 21[cm] Emission from Hydrogen in the Milky way. Frequency = 1420.405 [MHz]

3. Keizo NONAKA at GHOU2007 JAHOU The Radio Curriculum Chapter I : basics Kinetic energy to receivers Chapter II : observation Equipment and observation Chapter III : Analysis Understand the meanings

4. Keizo NONAKA at GHOU2007 In the year of 2006

5. Keizo NONAKA at GHOU2007 Draw the picture of oscillation propagationreceiving

6. Keizo NONAKA at GHOU2007 The fundamentals of radio receivers

7. Keizo NONAKA at GHOU2007

10. In the year of 2007 Let us make the real radio telescope

11. Keizo NONAKA at GHOU2007 The Earth Science Club at Kameoka High 7 boys 17 to 18 years old

12. Keizo NONAKA at GHOU2007 The model of oscillator The model of oscillator

13. Keizo NONAKA at GHOU2007 The model of receiver

14. Keizo NONAKA at GHOU2007

15. Systems 1. Receiving 2. Pursuer 3. Frequency Analysis

16. Keizo NONAKA at GHOU2007 Receiving Systems Reflector Horn Receiving element Booster Frequency down converter

17. Keizo NONAKA at GHOU2007 Carve Calculations for the reflector

18. Keizo NONAKA at GHOU2007 variables Frequency 1420.40 [MHz] Diameter 2000.00 [mm] Vignetting factor 50.00 [%] f/D 0.50 Focal length 1000.00 [mm] Angular aperture 106.26 ° Gain 26.43 [dbi]

19. Keizo NONAKA at GHOU2007 Pointing

20. Bending

21. The horn

22. Keizo NONAKA at GHOU2007 Assembly

23. Frequency Down Converter Frequency Down Converter

24. Keizo NONAKA at GHOU2007 Frequency Analysis Frequency Analysis Amplitude in the frequency domain Spectrum analyzers are expensive

25. Keizo NONAKA at GHOU2007 Sign waves can be rewritten in the complex spin movement The Fast Fourier Transfer gives Amplitude i q

26. Keizo NONAKA at GHOU2007

27. Things to do Booster Pursuer system Inexpensive Software Defined Radio The First Light

28. Keizo NONAKA at GHOU2007 Investment 90,000 JPY 750 USD 660 Euro So far

29. Keizo NONAKA at GHOU2007 The Problems Hand craft takes time Backup theories Long term activities Finance

30. Keizo NONAKA at GHOU2007 What tudents an earn Feasibility based on Try and Error Technology for Science Hand craft Electronics Team work

31. Keizo NONAKA at GHOU2007 Special Thanks Dr. Okyudo Wakayama U. Mr. Tanaka ham operator Chevron Electronics Company