microwaves - TeacherWeb
... • Microwaves are good for transmitting information because they can penetrate haze, light rain and snow, clouds, and smoke. • Shorter microwaves are used for Doppler radar used in weather forecasts. • One microwave can carry 1000 telephone calls. ...
... • Microwaves are good for transmitting information because they can penetrate haze, light rain and snow, clouds, and smoke. • Shorter microwaves are used for Doppler radar used in weather forecasts. • One microwave can carry 1000 telephone calls. ...
2012 Cave Astrola Telescope Restoration
... The third and arguably most important task would be that of aligning the telescope. With the help of the Backyard Astronomer's Guide, we first had to determine how to collimate the telescope. The secondary mirror was first to be aligned and centered in the focuser. My partner tightened and loosened ...
... The third and arguably most important task would be that of aligning the telescope. With the help of the Backyard Astronomer's Guide, we first had to determine how to collimate the telescope. The secondary mirror was first to be aligned and centered in the focuser. My partner tightened and loosened ...
88 Hubble.p65
... Answer: Heavy wheels would provide a greater reaction force as they spin, but they would be more difficult to control for fine adjustments to the position of the craft. ...
... Answer: Heavy wheels would provide a greater reaction force as they spin, but they would be more difficult to control for fine adjustments to the position of the craft. ...
Welcome to the planetarium
... Missions to the Outer Planets • Voyager I and II missions launched in 1977 to study Jupiter, Saturn, Uranus, and Neptune • Both spacecraft have left the solar system, but continue to send information back to us from about 10 billion miles away ...
... Missions to the Outer Planets • Voyager I and II missions launched in 1977 to study Jupiter, Saturn, Uranus, and Neptune • Both spacecraft have left the solar system, but continue to send information back to us from about 10 billion miles away ...
Space Physics Questions
... 12) a) i) State the name of an optical device that can split white light into different colours. ii) Draw a diagram of white light entering this device and list the order of the colours produced when they come out of the other side of the device. b) Astronomers can use peak wavelength of light emit ...
... 12) a) i) State the name of an optical device that can split white light into different colours. ii) Draw a diagram of white light entering this device and list the order of the colours produced when they come out of the other side of the device. b) Astronomers can use peak wavelength of light emit ...
Observing the Solar System
... – They can be moved close together or far apart – They are linked together, so they can be used individually or as one giant telescope 25km in diameter. ...
... – They can be moved close together or far apart – They are linked together, so they can be used individually or as one giant telescope 25km in diameter. ...
Topic 4 Assignment - Science 9 Portfolio
... ground-based astronomical telescope by counteracting the effects of the atmosphere on the image. A deforming mirror in the light path of the telescope maintains a pointlike image of the celestial body using either a real star or a laser beam as a reference. Triangulation- the process of determining ...
... ground-based astronomical telescope by counteracting the effects of the atmosphere on the image. A deforming mirror in the light path of the telescope maintains a pointlike image of the celestial body using either a real star or a laser beam as a reference. Triangulation- the process of determining ...
About telescopes
... A more general expression for the theoretical resolving power • Imagine that star images look like Airy disks ...
... A more general expression for the theoretical resolving power • Imagine that star images look like Airy disks ...
How ideas of the universe have changed over time
... Near June 21 start of summer Longest day of the year Near December 21 start of winter Shortest day of the year ...
... Near June 21 start of summer Longest day of the year Near December 21 start of winter Shortest day of the year ...
The eleventh annual AST poster session - Home
... we are alone in the universe. Instead of just sitting and waiting for a visitor to come to our planet to answer the question, U.C. Berkeley started recording radio transmissions from space on November 20, 1998 from the Arecibo Radio Telescope. Because the distance between stars with the possibly of ...
... we are alone in the universe. Instead of just sitting and waiting for a visitor to come to our planet to answer the question, U.C. Berkeley started recording radio transmissions from space on November 20, 1998 from the Arecibo Radio Telescope. Because the distance between stars with the possibly of ...
How do refracting and reflecting telescopes work
... is formed. A _______ lens is then used to magnify the image. There are two main problems of refracting telescopes; images are not always _____ because the light is bent and the size of the lens limits the _______ of the telescope. Choose from; image ...
... is formed. A _______ lens is then used to magnify the image. There are two main problems of refracting telescopes; images are not always _____ because the light is bent and the size of the lens limits the _______ of the telescope. Choose from; image ...
Studying Space Chapter 26 Notes
... system of measurement to determine distances To measure distances in the Solar System we use the distance between the Earth and the Sun. This is an “Astronomical Unit” or AU = 149,597,870.691km Speed of Light = 9.46 x 10 How far light travels in a year. The closest star (besides the sun) is 4.22 lig ...
... system of measurement to determine distances To measure distances in the Solar System we use the distance between the Earth and the Sun. This is an “Astronomical Unit” or AU = 149,597,870.691km Speed of Light = 9.46 x 10 How far light travels in a year. The closest star (besides the sun) is 4.22 lig ...
The Earth`s axis is tilted relative to its orbit around the sun
... a. quadrant c. cross-staff b. astrolabe d. early telescope 4. What unit of measurement would be the most appropriate to measure the distance between Mars and Venus? a. astronomical unit c. light meter b. light year d. second 5. If a new planet was discovered between the orbits of Earth and Mars, wha ...
... a. quadrant c. cross-staff b. astrolabe d. early telescope 4. What unit of measurement would be the most appropriate to measure the distance between Mars and Venus? a. astronomical unit c. light meter b. light year d. second 5. If a new planet was discovered between the orbits of Earth and Mars, wha ...
Document - Hartford Junior School
... of Astronomy. Upon arrival we all went into the lecture theatre and met our instructor for the trip, Dr Carolin Crawford. We all took part in a fun quiz to test our knowledge and we all had to make guesses! However James won the first game and Henry the next. We then listened to a fascinating presen ...
... of Astronomy. Upon arrival we all went into the lecture theatre and met our instructor for the trip, Dr Carolin Crawford. We all took part in a fun quiz to test our knowledge and we all had to make guesses! However James won the first game and Henry the next. We then listened to a fascinating presen ...
NASA Space Place
... times as great as our own star. The Bubble Nebula, discovered in 1787 by William Herschel, is perhaps the classic example of this phenomenon. At a distance of 7,100 light years away in the constellation of Cassiopeia, a molecular gas cloud is actively forming stars, including the massive Oclass star ...
... times as great as our own star. The Bubble Nebula, discovered in 1787 by William Herschel, is perhaps the classic example of this phenomenon. At a distance of 7,100 light years away in the constellation of Cassiopeia, a molecular gas cloud is actively forming stars, including the massive Oclass star ...
Light and Telescopes - Otterbein University
... HI – 36 1.8 m hexagonal mirrors; equivalent to 10 m – Above most of atmosphere (almost 14,000 ft ASL) – Operating since 1993 ...
... HI – 36 1.8 m hexagonal mirrors; equivalent to 10 m – Above most of atmosphere (almost 14,000 ft ASL) – Operating since 1993 ...
Telescopes, short
... Light rays from a distant source, parallel to the "mirror axis" all meet at one point, the focus. ...
... Light rays from a distant source, parallel to the "mirror axis" all meet at one point, the focus. ...
InStrumentS
... stars, allowing it to detect changes in brightness due to a passing planet. The pointing precision of the spacecraft is controlled to within a few milliarcseconds and its photometer features a focal plane array of 42 charge coupled devices (CCDs) to collect the photons of light observed by Kepler. N ...
... stars, allowing it to detect changes in brightness due to a passing planet. The pointing precision of the spacecraft is controlled to within a few milliarcseconds and its photometer features a focal plane array of 42 charge coupled devices (CCDs) to collect the photons of light observed by Kepler. N ...
James Webb Space Telescope
The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength visible to the mid-infrared, and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. The telescope features a segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below 50 K (−220 °C; −370 °F).JWST's capabilities will enable a broad range of investigations across the fields of astronomy and cosmology. One particular goal involves observing some of the most distant objects in the Universe, beyond the reach of current ground and space based instruments. This includes the very first stars, the epoch of reionization, and the formation of the first galaxies. Another goal is understanding the formation of stars and planets. This will include imaging molecular clouds and star-forming clusters, studying the debris disks around stars, direct imaging of planets, and spectroscopic examination of planetary transits.In gestation since 1996, the project represents an international collaboration of about 17 countries led by NASA, and with significant contributions from the European Space Agency and the Canadian Space Agency. It is named after James E. Webb, the second administrator of NASA, who played an integral role in the Apollo program.The JWST has a history of major cost overruns and delays. The first realistic budget estimates were that the observatory would cost $1.6 billion and launch in 2011. NASA has now scheduled the telescope for a 2018 launch. In 2011, the United States House of Representatives voted to terminate funding, after about $3 billion had been spent and 75 percent of its hardware was in production. Funding was restored in compromise legislation with the US Senate, and spending on the program was capped at $8 billion. As of December 2014, the telescope remained on schedule and within budget, but at risk of further delays.