Welcome guide to Astronomy
... Such photographs need long exposures of many minutes or even hours. The human eye does not take time exposures. It cannot perceive colors in dim light. What the eye can do is see very fine detail in structure and contrast. Your telescope’s range is limited only by your willingness to be patient, to ...
... Such photographs need long exposures of many minutes or even hours. The human eye does not take time exposures. It cannot perceive colors in dim light. What the eye can do is see very fine detail in structure and contrast. Your telescope’s range is limited only by your willingness to be patient, to ...
WORD - hrsbstaff.ednet.ns.ca
... 11. A band of the celestial sphere extending on either side of the ecliptic that represents the path of the different celestial bodies (i.e. Moon, Sun, planets) and contains constellations like Gemini and Aquarius is called the a. North Celestial Pole. b. South Celestial Pole. c. Celestial Equator. ...
... 11. A band of the celestial sphere extending on either side of the ecliptic that represents the path of the different celestial bodies (i.e. Moon, Sun, planets) and contains constellations like Gemini and Aquarius is called the a. North Celestial Pole. b. South Celestial Pole. c. Celestial Equator. ...
Diffuse Ultraviolet Emission in Galaxies
... the spiral galaxy NGC 1313, taken by Hubble’s Advanced Camera for Surveys (ACS) in 2003. Our initial goal was to find the source of unexplained ultraviolet (UV) emission, diffusely distributed in NGC 1313 and other spiral galaxies, which had been observed in the 1990s. We discovered that the likely ...
... the spiral galaxy NGC 1313, taken by Hubble’s Advanced Camera for Surveys (ACS) in 2003. Our initial goal was to find the source of unexplained ultraviolet (UV) emission, diffusely distributed in NGC 1313 and other spiral galaxies, which had been observed in the 1990s. We discovered that the likely ...
Observations of gravitational microlensing events with OSIRIS
... apparent brightness of 16.6 (Küppers et al. 2007); this is better than most microlensing observations from the ground. We may therefore assume that the error margins of the photometric measurements carried out with OSIRIS allow theoretical modelling of the event with the required accuracy. The numbe ...
... apparent brightness of 16.6 (Küppers et al. 2007); this is better than most microlensing observations from the ground. We may therefore assume that the error margins of the photometric measurements carried out with OSIRIS allow theoretical modelling of the event with the required accuracy. The numbe ...
Astronomy 103: First Exam Name
... (c) the best angular resolution for a particular telescope (d) the furthest object that can be seen with a particular telescope (e) 73 5. Which of the following could be determined by the spectra of an object (a) the chemical composition (b) the rotation rate (c) the temperature (d) all of these (e) ...
... (c) the best angular resolution for a particular telescope (d) the furthest object that can be seen with a particular telescope (e) 73 5. Which of the following could be determined by the spectra of an object (a) the chemical composition (b) the rotation rate (c) the temperature (d) all of these (e) ...
Lecture
... the image plane is fixed, therefore, large and heavy instruments such as big spectrographs, spectroheliographs, filters etc. can be coupled to the telescope. In both heliostat and siderostat arrangements, the solar image rotates once in 24 hours around it’s centre, while in a coelostat the image does ...
... the image plane is fixed, therefore, large and heavy instruments such as big spectrographs, spectroheliographs, filters etc. can be coupled to the telescope. In both heliostat and siderostat arrangements, the solar image rotates once in 24 hours around it’s centre, while in a coelostat the image does ...
Stars and their Properties
... We know the most about the Sun than any other star Closest stars (besides the Sun) are hundreds of thousands of times further away than the Sun Stars are so far away so it’s safe to look at them All stars are made up of 75% hydrogen and 25% helium Parallax – Apparent movement of an object based on y ...
... We know the most about the Sun than any other star Closest stars (besides the Sun) are hundreds of thousands of times further away than the Sun Stars are so far away so it’s safe to look at them All stars are made up of 75% hydrogen and 25% helium Parallax – Apparent movement of an object based on y ...
Problem set 2
... and luminosity from the textbook, and between mass and radius (you can assume it’s linear, R ∼ M), compute Proxima’s effective temperature Tef f . Comparing with sun’s temperature, prove that the star appears much redder than the sun. Compute the effective temperatures of the other two stars (1.1 an ...
... and luminosity from the textbook, and between mass and radius (you can assume it’s linear, R ∼ M), compute Proxima’s effective temperature Tef f . Comparing with sun’s temperature, prove that the star appears much redder than the sun. Compute the effective temperatures of the other two stars (1.1 an ...
Key 2 - UNLV Physics
... (c) the best angular resolution for a particular telescope (d) the furthest object that can be seen with a particular telescope (e) 73 5. Which of the following could be determined by the spectra of an object (a) the chemical composition (b) the rotation rate (c) the temperature (d) all of these (e) ...
... (c) the best angular resolution for a particular telescope (d) the furthest object that can be seen with a particular telescope (e) 73 5. Which of the following could be determined by the spectra of an object (a) the chemical composition (b) the rotation rate (c) the temperature (d) all of these (e) ...
SUBMILLIMETER WAVELENGTH ASTRONOMY MISSIONS
... a polarizing Michelson interferometer which operates over the wavelength range 1 cm to 100 pm, and a diffuse infrared experiment which measures in ten bands from 1 tm to 300 gm. The microwave instruments are based on Schottky Diode receivers. The receivers at 53 and 90 GHz are radiatively cooled to ...
... a polarizing Michelson interferometer which operates over the wavelength range 1 cm to 100 pm, and a diffuse infrared experiment which measures in ten bands from 1 tm to 300 gm. The microwave instruments are based on Schottky Diode receivers. The receivers at 53 and 90 GHz are radiatively cooled to ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... The Earth and Moon formed from the glancing impact of a large body on the proto-Earth. ...
... The Earth and Moon formed from the glancing impact of a large body on the proto-Earth. ...
PHYSICS 015
... The Super-Massive Black Hole (SMBH) contains only about 1/1000 of one percent of the mass of the Milky Way – it’s big, yes, but hardly dominant. (Moreover, there are globular star clusters of comparable mass, located here and there in the galaxy.) So our SMBH doesn’t ‘control’ the Milky Way the way ...
... The Super-Massive Black Hole (SMBH) contains only about 1/1000 of one percent of the mass of the Milky Way – it’s big, yes, but hardly dominant. (Moreover, there are globular star clusters of comparable mass, located here and there in the galaxy.) So our SMBH doesn’t ‘control’ the Milky Way the way ...
Foreword - Peter Zamarovský
... We have presented an example of what the universe would appear if it were infinite and uniformly (or at least randomly) filled with stars. If it really did look like that, we wouldn’t be able to see it, because it would be too hot for us to exist. A mere glance at the sky tells us that the stars are ...
... We have presented an example of what the universe would appear if it were infinite and uniformly (or at least randomly) filled with stars. If it really did look like that, we wouldn’t be able to see it, because it would be too hot for us to exist. A mere glance at the sky tells us that the stars are ...
Seasonal calendar lesson plan - Department of Environment and
... Understanding how the tilt of the Earth affects the seasons can be difficult to conceptualise. A lamp in the centre of a room with a terrestrial globe is a great way to show students how the tilt of the Earth affects the length of the day and seasonal change. To signify the beginning of the year, ma ...
... Understanding how the tilt of the Earth affects the seasons can be difficult to conceptualise. A lamp in the centre of a room with a terrestrial globe is a great way to show students how the tilt of the Earth affects the length of the day and seasonal change. To signify the beginning of the year, ma ...
Powerpoint Presentation (large file)
... • They emit strong ultraviolet radiation that ionizes hydrogen in the surrounding cloud, thus creating the reddish emission nebulae called H II regions • Ultraviolet radiation and stellar winds from the O and B stars at the core of an H II region create shock waves that move outward through the gas ...
... • They emit strong ultraviolet radiation that ionizes hydrogen in the surrounding cloud, thus creating the reddish emission nebulae called H II regions • Ultraviolet radiation and stellar winds from the O and B stars at the core of an H II region create shock waves that move outward through the gas ...
Stars
... E0102-72 is a supernova remnant in the Small Magellanic Cloud, a satellite galaxy of the Milky Way. This galaxy is 190,000 light years from Earth. E0102 -72, which is approximately a thousand years old, is believed to have resulted from the explosion of a massive star. Stretching across forty light ...
... E0102-72 is a supernova remnant in the Small Magellanic Cloud, a satellite galaxy of the Milky Way. This galaxy is 190,000 light years from Earth. E0102 -72, which is approximately a thousand years old, is believed to have resulted from the explosion of a massive star. Stretching across forty light ...
By the time astronomers got a big telescope into orbit, they
... a smudge three arc seconds across. A star seen through the Hubble is a large bright cloud with a small brighter core. Few of the planned observations dependent on sharp resolution can be done. For the time being astronomers can work around some of the Bubble's problem, observing bright objects and r ...
... a smudge three arc seconds across. A star seen through the Hubble is a large bright cloud with a small brighter core. Few of the planned observations dependent on sharp resolution can be done. For the time being astronomers can work around some of the Bubble's problem, observing bright objects and r ...
EXOPLANETS The search for planets beyond our solar system
... Variation of the location of a star’s habitable zone (where liquid water can exist) with the star’s mass ...
... Variation of the location of a star’s habitable zone (where liquid water can exist) with the star’s mass ...
Slide 1
... As of February 2012, Kepler has revealed 2321 planets – 281 are Jupiter-sized or larger (6 REarth < R < 22 REarth); – 1118 are Neptune-sized (2 REarth < R < 6 REarth); – 676 are super-Earth (1.25 REarth < R < 2 REarth); – 246 are approximately Earth-sized (R< 1.25 REarth). – 88% are Neptune sized or ...
... As of February 2012, Kepler has revealed 2321 planets – 281 are Jupiter-sized or larger (6 REarth < R < 22 REarth); – 1118 are Neptune-sized (2 REarth < R < 6 REarth); – 676 are super-Earth (1.25 REarth < R < 2 REarth); – 246 are approximately Earth-sized (R< 1.25 REarth). – 88% are Neptune sized or ...
Stellar Spire in the Eagle Nebula
... image] is eroding the pillar. The starlight also is responsible for illuminating the tower’s rough surface. Ghostly streamers of gas can be seen boiling off this surface, creating the haze around the structure and highlighting its three-dimensional shape. The column is silhouetted against the backgr ...
... image] is eroding the pillar. The starlight also is responsible for illuminating the tower’s rough surface. Ghostly streamers of gas can be seen boiling off this surface, creating the haze around the structure and highlighting its three-dimensional shape. The column is silhouetted against the backgr ...
Astrophotography Manual
... 3. Methods of using the scope effectively 3.1. Alignment of the finder scope Before alignment, the scope should be balanced so that there will be minimal stress on the observer. To alignment it, release all the clamps and slowly let the scope lie on its side. On the other side, adjust the counter we ...
... 3. Methods of using the scope effectively 3.1. Alignment of the finder scope Before alignment, the scope should be balanced so that there will be minimal stress on the observer. To alignment it, release all the clamps and slowly let the scope lie on its side. On the other side, adjust the counter we ...
review_one - MSU Solar Physics
... Separating sunlight by wavelength tells us what about the Sun? Recognize the difference between continuous, emission and absorption spectra Know the position and shape of the following asterisms, visible at 10 pm on February 1st: Draco, Leo, Hydra, Orion, Pisces ...
... Separating sunlight by wavelength tells us what about the Sun? Recognize the difference between continuous, emission and absorption spectra Know the position and shape of the following asterisms, visible at 10 pm on February 1st: Draco, Leo, Hydra, Orion, Pisces ...
Satellite Command And Data Handling Subsystem
... addition to data from the primary instruments. Information transmitted to the S/C generally consists of data to be stored by on-board processors and commands to change the state of the on-board system either in real-time or through electronic logic that execute them as a function of time or as req ...
... addition to data from the primary instruments. Information transmitted to the S/C generally consists of data to be stored by on-board processors and commands to change the state of the on-board system either in real-time or through electronic logic that execute them as a function of time or as req ...
Chapter 2 Knowing the Heavens
... meridian transits of the Sun IF it moved at a constant rate (exactly 24 hrs). • Sidereal time: the interval of time between two successive meridian transits of a star (23 hrs 56 min). ...
... meridian transits of the Sun IF it moved at a constant rate (exactly 24 hrs). • Sidereal time: the interval of time between two successive meridian transits of a star (23 hrs 56 min). ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.