Highlights of the Month - Bridgend Astronomical Society
... observation in a small telescope as Mizar is then shown to be an easily resolved double star. A fainter reddish star forms a triangle with Alcor and Mizar. Ursa Major contains many interesting "deep sky" objects. The brightest, listed in Messier's Catalogue, are shown on the chart, but there are man ...
... observation in a small telescope as Mizar is then shown to be an easily resolved double star. A fainter reddish star forms a triangle with Alcor and Mizar. Ursa Major contains many interesting "deep sky" objects. The brightest, listed in Messier's Catalogue, are shown on the chart, but there are man ...
Ordering_The_Universe
... A collection of galaxies which includes the Local Group (A Cluster). Largest gravitational bound system so far. Ours=Virgo Super Cluster ...
... A collection of galaxies which includes the Local Group (A Cluster). Largest gravitational bound system so far. Ours=Virgo Super Cluster ...
Ch.4 HW
... 10. How can electrons in an atom jump from a lower energy orbital to a higher energy orbital? 11. You are heating a jar full of hydrogen and observing its spectrum. When you add more hydrogen to it, what happens to the spectral lines in the spectrum? 12. What is a absorption spectrum and how does it ...
... 10. How can electrons in an atom jump from a lower energy orbital to a higher energy orbital? 11. You are heating a jar full of hydrogen and observing its spectrum. When you add more hydrogen to it, what happens to the spectral lines in the spectrum? 12. What is a absorption spectrum and how does it ...
Meteors - Little Worksheets
... across the sky. Some people believe that seeing a shooting star will bring them good luck. It’s hard to find a shooting star because they disappear fast. The correct name for a shooting star is meteor. Besides very large objects like stars, planets and moons, space has lots of little objects. These ...
... across the sky. Some people believe that seeing a shooting star will bring them good luck. It’s hard to find a shooting star because they disappear fast. The correct name for a shooting star is meteor. Besides very large objects like stars, planets and moons, space has lots of little objects. These ...
OUR EARTH AND UNIVERSE --- WHERE WE LIVE (by Charles
... the earth and broke off a portion of the earth. Eventually, these pieces of earth were pulled together by gravity and also pulled into a rotating orbit by the gravitational force of the earth. Our sun is but one of the billions of stars in a galaxy that we name the Milky Way. The Milky Way galaxy (a ...
... the earth and broke off a portion of the earth. Eventually, these pieces of earth were pulled together by gravity and also pulled into a rotating orbit by the gravitational force of the earth. Our sun is but one of the billions of stars in a galaxy that we name the Milky Way. The Milky Way galaxy (a ...
Distances in Space
... Andromeda have exploded as a supernova or gone out long ago. The message of these star finishing events just has not gotten to us yet! ...
... Andromeda have exploded as a supernova or gone out long ago. The message of these star finishing events just has not gotten to us yet! ...
Science Journals * 3-18-13
... 1. Where is our solar system located in the Milky Way galaxy? 2. How does the Sun’s mass compare with other stars in the galactic neighborhood? 3. How does the distance of the Sun from Earth compare to the distances of other stars from Earth? 4. How long does it take for light from the Sun to reach ...
... 1. Where is our solar system located in the Milky Way galaxy? 2. How does the Sun’s mass compare with other stars in the galactic neighborhood? 3. How does the distance of the Sun from Earth compare to the distances of other stars from Earth? 4. How long does it take for light from the Sun to reach ...
Operations of the Quality Control Group: The UVES case
... Low metallicity brown dwarfs hard to observe: >5 Gyr-old field brown dwarfs with less than ~0.04 solar masses too faint to be picked up by surveys, might be found by chance in deep fields Brown dwarfs forming at low metallicities (~0.5 solar) may be found in the outer Galaxy: clusters fit in small f ...
... Low metallicity brown dwarfs hard to observe: >5 Gyr-old field brown dwarfs with less than ~0.04 solar masses too faint to be picked up by surveys, might be found by chance in deep fields Brown dwarfs forming at low metallicities (~0.5 solar) may be found in the outer Galaxy: clusters fit in small f ...
Andromeda Check-List - Norman Lockyer Observatory
... a faint glow. Moderate sized telescopes will reveal a smattering of dim stars. NGC0040 – Planetary Nebula – Moderate This object can be seen through small telescopes and is best found using an OIII filter on a low power eyepiece where it will appear as a flat featureless disk. Under good conditions ...
... a faint glow. Moderate sized telescopes will reveal a smattering of dim stars. NGC0040 – Planetary Nebula – Moderate This object can be seen through small telescopes and is best found using an OIII filter on a low power eyepiece where it will appear as a flat featureless disk. Under good conditions ...
What is an atom?
... 3. If light comprising a continuous spectrum passes through a cool, low-density gas, the result will be an absorption spectrum. Light excites electrons in atoms to higher energy states ...
... 3. If light comprising a continuous spectrum passes through a cool, low-density gas, the result will be an absorption spectrum. Light excites electrons in atoms to higher energy states ...
a. Recognize the physical attributes of stars in the night sky such as
... developing your own formative assessments. Remember formative assessment is to be given throughout the teaching of a standard to help you guide your instruction based on students needs. A good formative assessment should have a mix of multiple choice as well as open ended. S4E1. Students will compar ...
... developing your own formative assessments. Remember formative assessment is to be given throughout the teaching of a standard to help you guide your instruction based on students needs. A good formative assessment should have a mix of multiple choice as well as open ended. S4E1. Students will compar ...
Citizen Sky Epsilon Aurigae Script for Fulldome Planetariums
... Greek warrior who beheaded Medusa, the serpent-haired Gorgon who threatened Cassiopeia’s kingdom. Algol marks the “evil eye” of Medusa’s severed head… Every three days, the star dims noticeably, as if the evil eye were winking at us. If we could see what’s actually happening, Algol would reveal itse ...
... Greek warrior who beheaded Medusa, the serpent-haired Gorgon who threatened Cassiopeia’s kingdom. Algol marks the “evil eye” of Medusa’s severed head… Every three days, the star dims noticeably, as if the evil eye were winking at us. If we could see what’s actually happening, Algol would reveal itse ...
Which of the following statements is TRUE
... Star X has a surface temperature that is 3 times higher than that of the Sun. Both stars have exactly the same radius. Which of the following statements is TRUE? A. The luminosity of the Sun is 81 times that of the star X B. The typical photon emitted by star X has a lower energy than the typical ph ...
... Star X has a surface temperature that is 3 times higher than that of the Sun. Both stars have exactly the same radius. Which of the following statements is TRUE? A. The luminosity of the Sun is 81 times that of the star X B. The typical photon emitted by star X has a lower energy than the typical ph ...
The Nature of Light - Physics and Astronomy
... In the 1860s, the Scottish mathematician, physicist and coffee brewer James Clerk Maxwell succeeded in describing all the basic properties of electricity and magnetism in four equations This mathematical achievement demonstrated that electric and magnetic forces are really two aspects of the same ph ...
... In the 1860s, the Scottish mathematician, physicist and coffee brewer James Clerk Maxwell succeeded in describing all the basic properties of electricity and magnetism in four equations This mathematical achievement demonstrated that electric and magnetic forces are really two aspects of the same ph ...
here
... • Another interesting fact is that in the year 2000, it is known that 30 stars have planets orbiting them. One star (Andromedae) has three planets orbiting around it. • The only way we can truly see and study stars and every thing else in space for that matter, is with the use of telescopes. TELESCO ...
... • Another interesting fact is that in the year 2000, it is known that 30 stars have planets orbiting them. One star (Andromedae) has three planets orbiting around it. • The only way we can truly see and study stars and every thing else in space for that matter, is with the use of telescopes. TELESCO ...
September 2011 - Newbury Astronomical Society
... The most important feature is of course the optical quality but most modern instruments costing around £50 (before special offer price reduction) are of a reasonable quality. Binoculars with an aperture of less than 50mm are not best suited for astronomy as they cannot capture enough light. Most bin ...
... The most important feature is of course the optical quality but most modern instruments costing around £50 (before special offer price reduction) are of a reasonable quality. Binoculars with an aperture of less than 50mm are not best suited for astronomy as they cannot capture enough light. Most bin ...
Astronomy 101 Section 4
... educational lectures and activities to talk to someone when something isn’t right ...
... educational lectures and activities to talk to someone when something isn’t right ...
Observational astronomy
Observational astronomy is a division of the astronomical science that is concerned with recording data, in contrast with theoretical astrophysics, which is mainly concerned with finding out the measurable implications of physical models. It is the practice of observing celestial objects by using telescopes and other astronomical apparatus.As a science, the study of astronomy is somewhat hindered in that direct experiments with the properties of the distant universe are not possible. However, this is partly compensated by the fact that astronomers have a vast number of visible examples of stellar phenomena that can be examined. This allows for observational data to be plotted on graphs, and general trends recorded. Nearby examples of specific phenomena, such as variable stars, can then be used to infer the behavior of more distant representatives. Those distant yardsticks can then be employed to measure other phenomena in that neighborhood, including the distance to a galaxy.Galileo Galilei turned a telescope to the heavens and recorded what he saw. Since that time, observational astronomy has made steady advances with each improvement in telescope technology.A traditional division of observational astronomy is given by the region of the electromagnetic spectrum observed: Optical astronomy is the part of astronomy that uses optical components (mirrors, lenses and solid-state detectors) to observe light from near infrared to near ultraviolet wavelengths. Visible-light astronomy (using wavelengths that can be detected with the eyes, about 400 - 700 nm) falls in the middle of this range. Infrared astronomy deals with the detection and analysis of infrared radiation (this typically refers to wavelengths longer than the detection limit of silicon solid-state detectors, about 1 μm wavelength). The most common tool is the reflecting telescope but with a detector sensitive to infrared wavelengths. Space telescopes are used at certain wavelengths where the atmosphere is opaque, or to eliminate noise (thermal radiation from the atmosphere). Radio astronomy detects radiation of millimetre to dekametre wavelength. The receivers are similar to those used in radio broadcast transmission but much more sensitive. See also Radio telescopes. High-energy astronomy includes X-ray astronomy, gamma-ray astronomy, and extreme UV astronomy, as well as studies of neutrinos and cosmic rays.Optical and radio astronomy can be performed with ground-based observatories, because the atmosphere is relatively transparent at the wavelengths being detected. Observatories are usually located at high altitudes so as to minimise the absorption and distortion caused by the Earth's atmosphere. Some wavelengths of infrared light are heavily absorbed by water vapor, so many infrared observatories are located in dry places at high altitude, or in space.The atmosphere is opaque at the wavelengths used by X-ray astronomy, gamma-ray astronomy, UV astronomy and (except for a few wavelength ""windows"") far infrared astronomy, so observations must be carried out mostly from balloons or space observatories. Powerful gamma rays can, however be detected by the large air showers they produce, and the study of cosmic rays is a rapidly expanding branch of astronomy.For much of the history of observational astronomy, almost all observation was performed in the visual spectrum with optical telescopes. While the Earth's atmosphere is relatively transparent in this portion of the electromagnetic spectrum, most telescope work is still dependent on seeing conditions and air transparency, and is generally restricted to the night time. The seeing conditions depend on the turbulence and thermal variations in the air. Locations that are frequently cloudy or suffer from atmospheric turbulence limit the resolution of observations. Likewise the presence of the full Moon can brighten up the sky with scattered light, hindering observation of faint objects.For observation purposes, the optimal location for an optical telescope is undoubtedly in outer space. There the telescope can make observations without being affected by the atmosphere. However, at present it remains costly to lift telescopes into orbit. Thus the next best locations are certain mountain peaks that have a high number of cloudless days and generally possess good atmospheric conditions (with good seeing conditions). The peaks of the islands of Mauna Kea, Hawaii and La Palma possess these properties, as to a lesser extent do inland sites such as Llano de Chajnantor, Paranal, Cerro Tololo and La Silla in Chile. These observatory locations have attracted an assemblage of powerful telescopes, totalling many billion US dollars of investment.The darkness of the night sky is an important factor in optical astronomy. With the size of cities and human populated areas ever expanding, the amount of artificial light at night has also increased. These artificial lights produce a diffuse background illumination that makes observation of faint astronomical features very difficult without special filters. In a few locations such as the state of Arizona and in the United Kingdom, this has led to campaigns for the reduction of light pollution. The use of hoods around street lights not only improves the amount of light directed toward the ground, but also helps reduce the light directed toward the sky.Atmospheric effects (astronomical seeing) can severely hinder the resolution of a telescope. Without some means of correcting for the blurring effect of the shifting atmosphere, telescopes larger than about 15–20 cm in aperture can not achieve their theoretical resolution at visible wavelengths. As a result, the primary benefit of using very large telescopes has been the improved light-gathering capability, allowing very faint magnitudes to be observed. However the resolution handicap has begun to be overcome by adaptive optics, speckle imaging and interferometric imaging, as well as the use of space telescopes.Astronomers have a number of observational tools that they can use to make measurements of the heavens. For objects that are relatively close to the Sun and Earth, direct and very precise position measurements can be made against a more distant (and thereby nearly stationary) background. Early observations of this nature were used to develop very precise orbital models of the various planets, and to determine their respective masses and gravitational perturbations. Such measurements led to the discovery of the planets Uranus, Neptune, and (indirectly) Pluto. They also resulted in an erroneous assumption of a fictional planet Vulcan within the orbit of Mercury (but the explanation of the precession of Mercury's orbit by Einstein is considered one of the triumphs of his general relativity theory).