PPT-Telescopes

Jon Holtzman NMSU Astronomy Telescopes are light buckets bigger buckets collect more light and faint far away objects dont produce much light Why build bigger telescopes In principle bigger telescopes make sharper images. Big Science: Big Telescopes. Jodrell Bank Discovery Centre. Contents. Part 1: Gravity on Earth. Mass or weight?. The strength of Earth’s gravity. Part 2: Big Telescopes. How do we see space?. Part 3: Gravity in Space. meeting #2. Good use for diffraction: . exoplanets. Good use for diffraction: . exoplanets. Chromatic aberration. Spherical aberration. Parabolic. Spherical. Coma. Astigmatism. (e.g., Hale 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.. rd. workshop on . . . Large Mm/. Submm. Telescopes . . . in the ALMA Era. March 10, 09:00 – 18:10. March 11, 09:00 – 17:40. COSMOS Lodge. Conference Room. Background of the workshop. S. R. Kulkarni. Caltech Optical Observatories. Workhorse Instruments. Optical Imagers & Spectrographs. NIR Imagers & Spectrographs and so on. Specialized Instruments. Polarimeters. , Rapid spectroscopy, .. . So, if you are not sure, do your best to guess.. Please bring pencil(s) so that you can fill out. the scantrons.. No other accessories (calculators, cell phones, …) are allowed.. Important: Anything in the posted slides that I did not cover in class could be on the exam.. Big. . Glass. Giant Magellan Telescope (GMT). Las . Campanas. , Chile. First Light 2024. Large Binocular Telescope (LBTO). Mt Graham, AZ, 2007. Large Synoptic Survey Telescope (LSST), Cerro . Pachon. How astronomers study space. Electromagnetic Radiation (EMR). Light can travel through empty space. All EMR travels at the speed of light. . 3 x 10. 8. m/sec. Astronomers study different types of EMR. EEE Project. E. . Bossini. , C. Cicalò, . D. De . Gruttola,. I. . Gnesi. , M. Garbini, S. . Grazzi. , M.P. . Panetta. EEE meeting. 22. /03/. 2017. beta . ditributions. . for . all. . telescopes. . Refraction is the _____________ of light as it passes through glass.. II. Reflection: . Reflection occurs when light _____________ off of a mirror.. F. f. I. Refraction: . Refraction is the ___. bending. 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. Diffraction of Light. Newton pointed . out in his 1704 book . Opticks. , that "Light is never known to follow crooked passages nor to bend into the shadow". . This concept is consistent with the particle theory, which proposes that light particles must always travel in straight lines.. . Size does matter. The bigger, the better. 2. Resolve detail. 3. Magnification. Only important for solar system objects. Refracting Telescopes. Cheap. Good for bright objects. Basic design. Reflecting Telescopes.