PPT-Radio Telescopes Large metal dish acts as a mirror for radio waves. Radio receiver at

Surface accuracy not so important so easy to make large one angular resolution wavelength mirror diameter D larger than optical case but wavelength much larger cms to ms eg for wavelength 1 cm diameter 100 m resolution 20. The Golden Anniversary of the 1960’s:. The Golden Years of Radio Astronomy. HRA - IAU GA Hawaii. 5. Aug 2015. Ron . Ekers. CSIRO. Australia. Overview. The discovery process. Specialized . . general purpose. Telescopes. Key Concepts. What are the regions of the electromagnetic spectrum?. What are telescopes and how do they work?. Where are most large telescopes located?. Telescopes - Key Terms. Telescope. Telescopes were first invented around the year 1600. . Galileo . Galilei was an early astronomer who first used telescopes to view objects in our solar system. . He . made many important discoveries including: the moon was covered in mountains and Jupiter had 4 large moons.. 3: Telescopes. Images can be formed through reflection or refraction.. Reflecting mirror. 3.1 Optical Telescopes. Image formation. Modern telescopes are all reflectors:. Light traveling through lens is refracted differently depending on wavelength.. Optical Telescopes. Ground based and on satellites. Observations are recorded using a camera instead of the human eye most times. . This is so we can separate colors into light and using times to study changes over time.. Any sufficiently advanced technology is indistinguishable from magic. . (Arthur C. Clark). Pay no attention to the man behind the curtain. . (Wizard of Oz). This 15 minute tutorial aims to take the mystery out. Why . do we need telescopes?. Humans can only see 6000 stars at night and cannot resolve (discern) the detail of objects in the sky if they are too close together. . Humans also cannot see anything but visible light. . Agenda. Turn in Displacement Lab work. Turn in Permission slips. Notes on . Studying Space & . Exploring . Space packet. Studying space from Earth. Tele. = distance. Scopos. = to watch. Light and radiation (energy in the form of waves that travel through empty space). SPECTROSCOPY. Uses visible wavelength split into colors. Doppler shift. Wavelengths change when object is moving. Red/ . Blue. Shift. RECEDING (moving away) objects show a INCREASE in WAVELENGTH- red shift. Ninth Edition. Neil F. Comins • William J. Kaufmann III. CHAPTER 3. Light and Telescopes. WHAT DO YOU THINK?. What is light? . What type of electromagnetic radiation is most dangerous to life?. What is the main purpose of a telescope? . U-boat Radio Room Personnel - Equipment - Procedures Captain Jerry Mason, USN ( ret.) VE7YAB U-boat Archive Website http :// uboatarchive.net Oberfunkmaat Georg Seitz 17 years old - tobacco farmer to radioman in 17 months Warning!. You will not learn anything of use from this presentation!!!. Was Yuri Gagarin a radio amateur?. Lost Cosmonauts Conspiracy Theory. Judica-Cordiglia. Brothers. Amateur Radio Royalty. King Hussein of Jordan (JY1. FREQUENCIES . By John Bailey M0MTW. EXPLORING VLF and ELF FREQUENCIES. 1.What frequencies. VLF (Very Low Frequencies). 2. .What can be heard?.. 3. Professional VLF Radio Stations. 4. .Local Interference . Each station has a different remit, content, style and target audience. . The BBC has delivered radio since the 1920s as part of . Public Service Broadcasting . (PSB). The Reithian concept of the BBC was to raise the cultural standards of the nation so it resisted playing solely popular music until 1967, when Radio 1 was born..