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Last Words on CETI and some Space Travel Basics

Last Words on CETI and some Space Travel Basics. HNRS 228 w/Prof. Geller. What I Will Cover. Final words about CETI Space Travel Space Environment Spaceflight Projects Spaceflight Operations. A Cartoon about CETI. What does a telescope do?. Collect electromagnetic waves

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Last Words on CETI and some Space Travel Basics

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  1. Last Words on CETI and some Space Travel Basics HNRS 228 w/Prof. Geller

  2. What I Will Cover • Final words about CETI • Space Travel • Space Environment • Spaceflight Projects • Spaceflight Operations

  3. A Cartoon about CETI

  4. What does a telescope do? • Collect electromagnetic waves • Collecting ability proportional to the square of the diameter of the objective • Resolve electromagnetic sources • Related to the atmosphere, wavelength and curvature of the objective • Magnify surfaces of planets and the Moon • Magnification only of Moon, Sun and planets

  5. Looking Beyond the Eyes

  6. Optical Telescopes Reflector Refractor

  7. Different Views of Sun Sun in Hydrogen-alpha Sun in X-ray

  8. Radio Astronomy Basics

  9. A Little More Detail

  10. Jansky’s Original Radiotelescope

  11. Grote Reber’s Telescope

  12. 170 foot Diameter Radio-telescope at Green Bank, WV

  13. The 100-meter Green Bank Telescope

  14. Even Bigger than you Think

  15. Jupiter in Radio

  16. Saturn in Radio

  17. 3C296 Radio/Optical Composite

  18. A Vision for George Mason(based upon Univ. Indianapolis)

  19. Small Radio Telescope Justification • Radio science observations in the L-band • L-band lies in the 1400-1427 MHz region of the electromagnetic spectrum • detection of what astronomers call the 21-cm line of hydrogen • this is a portion of the hydrogen spectrum, in the radio region of the electromagnetic spectrum, which is generated by the neutral hydrogen clouds in the interstellar medium

  20. Small Radio Telescope Justification • Observations in C-band, which is 4313-4338 MHz and 3788-3813 MHz • Radio science observations in the C-band allow for the radio emission examination of the moon, which acts as a body at a temperature of 200 K. • Students will be able to scan the moon, and detect the estimated 6000 joules of energy from the lunar surface.

  21. GMU SRT Background • Funding • National Science Foundation • education portion of grant won by Dr. Rita Sambruna • Order History • ordered first week of June 2002 • stated 12 week delivery time • received 15 October 2002 • damaged antenna

  22. GMU SRT Background Part II • Order History • boxes damaged • FedEx insurance inspector called and visited to assess damage - refused claim • replacement parts to be shipped by vendor • Base assembled on roof • 1 November 2002 • Remaining electronics and replacement antenna parts received 30 January 2003

  23. Did You Say Fragile?

  24. Picking Up the Pieces on the Roof

  25. Whistle While You Work

  26. Tolerance

  27. Cleanup On The Roof

  28. The Base Of SRT

  29. Servo Motors Attachment

  30. Servos with Ring Assembly

  31. Dish/Receiver Assembly

  32. Readying for Final Mechanical Assembly

  33. From Mechanical to Electrical

  34. Assembled and Ready to Test

  35. Sample Data

  36. Even Smaller - Radio Jove

  37. Small Radio Science Demonstration Projects • Undergraduate research • Steve Richardson • web site built with some results from data acquired using U of Indianapolis • http://physics.gmu.edu/~arichar6/radio/index.html • prepared presentation for GMU “innovations” fair • prepared presentation for CPAC meeting at Bucknell University

  38. Smoothing Data

  39. Visualizing the Data

  40. Colorizing the Data

  41. Must Deal With Noise

  42. Worldwide Noise Sources

  43. Family Portrait (2001 conference)

  44. Radio Astronomy atGeorge Mason University

  45. Looking To The Future

  46. Future GMU Observatory

  47. Space Environment • Solar System • Reference System • Gravity and Mechanics • Trajectories • Planetary Orbits • Electromagnetics

  48. Solar System Considerations • Distance • From Sun • Energy, temperature, condensation of matter • Hostile Environment • Radiation (gamma ray) • Radiation (x-ray) • Radiation (UV)

  49. Coordinate Reference Systems • Geographic • Celestial • Precession

  50. Gravity and Mechanics • Orbits • Kepler • Newton

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