Today`s Powerpoint
... Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV photons. Why "H II Region? H I: Hydrogen atom H II: Ionized Hydrogen ...
... Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV photons. Why "H II Region? H I: Hydrogen atom H II: Ionized Hydrogen ...
Distance measurement in Astronomy
... object on the other side of the room. Now open your right eye and close your left eye. Your finger appears to move against the background. To understand exactly what is meant by parallax go and stand at one end of the lab, you will be the observer. Now get one member of your class to stand at A in t ...
... object on the other side of the room. Now open your right eye and close your left eye. Your finger appears to move against the background. To understand exactly what is meant by parallax go and stand at one end of the lab, you will be the observer. Now get one member of your class to stand at A in t ...
Clinical Techniques for Prescribing Bioptic Telescope
... • If acuity is similar between the eyes or if I’m concerned about dominancy issues, I’ll consider the same powers in a binocular design • If contrast is an issue, I’m thinking about Galilean designs first • If acuity is between 20/100 and 20/300 I’m thinking 4x and 6x Keplerian designs, especially i ...
... • If acuity is similar between the eyes or if I’m concerned about dominancy issues, I’ll consider the same powers in a binocular design • If contrast is an issue, I’m thinking about Galilean designs first • If acuity is between 20/100 and 20/300 I’m thinking 4x and 6x Keplerian designs, especially i ...
sky science study notes
... energy will focus on the sensitive nerves at the back of your eye and burn them, causing blindness. This is like burning wood with sunlight through a magnifying glass. ...
... energy will focus on the sensitive nerves at the back of your eye and burn them, causing blindness. This is like burning wood with sunlight through a magnifying glass. ...
Powerpoint
... • Distance from the Sun to Pluto – 0.006 light years = 6 x 109 km • Diameter of the Sun – 7 x 105 km • You could fit 108 Suns in the distance between the Sun and its closest neighbour • There is a lot of empty space between stars (or between stellar systems) in galaxies ...
... • Distance from the Sun to Pluto – 0.006 light years = 6 x 109 km • Diameter of the Sun – 7 x 105 km • You could fit 108 Suns in the distance between the Sun and its closest neighbour • There is a lot of empty space between stars (or between stellar systems) in galaxies ...
Big idea # 5 * Earth in space in time
... SC.8.E.5.1 Recognize that there are enormous distances between objects in space and apply our knowledge of light and space travel to understand this distance. SC.8.E.5.2 Recognize that the universe contains many billions of galaxies and that each galaxy contains many billions of stars. SC.8.E.5.3 Di ...
... SC.8.E.5.1 Recognize that there are enormous distances between objects in space and apply our knowledge of light and space travel to understand this distance. SC.8.E.5.2 Recognize that the universe contains many billions of galaxies and that each galaxy contains many billions of stars. SC.8.E.5.3 Di ...
Our Place in the Universe (Chapter 1) The Structure and Size of the
... The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion This is different from what happens in nuclear power stations ...
... The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion This is different from what happens in nuclear power stations ...
Part 1- The Basics
... would have if it were located exactly 10 parsecs from Earth – This magnitude is independent of the distance – One way to denote the intrinsic luminosity of a star in the unit of magnitude • The Sun’s apparent magnitude is -26.7 • The Sun absolute magnitude is +4.8 ...
... would have if it were located exactly 10 parsecs from Earth – This magnitude is independent of the distance – One way to denote the intrinsic luminosity of a star in the unit of magnitude • The Sun’s apparent magnitude is -26.7 • The Sun absolute magnitude is +4.8 ...
Transit of Venus
... with Earth. In other words the time from one inferior conjunction to the next inferior conjunction is about 116 days. So why we don't see a transit of Mercury every 116 days? Mercury’s orbit is tilted by about 7 deg w.r.t Earth’s orbit (ecliptic plane) From our point of view, a great majority of the ...
... with Earth. In other words the time from one inferior conjunction to the next inferior conjunction is about 116 days. So why we don't see a transit of Mercury every 116 days? Mercury’s orbit is tilted by about 7 deg w.r.t Earth’s orbit (ecliptic plane) From our point of view, a great majority of the ...
powerpoint - High Energy Physics at Wayne State
... 50 LY across •H II region (red) high-energy UV hits interstellar gas •dark dust filaments – extinction due to debris from supernovae •blue reflection nebula February 14, 2006 ...
... 50 LY across •H II region (red) high-energy UV hits interstellar gas •dark dust filaments – extinction due to debris from supernovae •blue reflection nebula February 14, 2006 ...
Geoscience Final Review material
... d. Temperature of the stars 137. Which is longer, a day according to the Sun (solar day), or a day according to the background stars (sidereal day)? a. The longest day is a sidereal day c. The longest day is a solar day b. The days are the same length (duh) d. The shortest day is any day there is a ...
... d. Temperature of the stars 137. Which is longer, a day according to the Sun (solar day), or a day according to the background stars (sidereal day)? a. The longest day is a sidereal day c. The longest day is a solar day b. The days are the same length (duh) d. The shortest day is any day there is a ...
The `Zij Muhammad Shahi` is a set of astronomical tables
... divisions into minutes, the shaking and wearing of their axes, the displacement of the centres of the circles, and the shifting of the planes of the instruments, he concluded that the reason why the determinations of the ancients such as Hipparchus and Ptolemy, proved inaccurate, must have been of t ...
... divisions into minutes, the shaking and wearing of their axes, the displacement of the centres of the circles, and the shifting of the planes of the instruments, he concluded that the reason why the determinations of the ancients such as Hipparchus and Ptolemy, proved inaccurate, must have been of t ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... clusters when a cold giant molecular cloud collapses under its own gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For m ...
... clusters when a cold giant molecular cloud collapses under its own gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For m ...
The Catalina Sky Survey NEO Follow-up
... telescope(s) • NEO candidates posted <15 min after reporting • Bright objects (< V~20) usually followed by other observing stations, often amateurs • Faint object follow-up conducted on our 1.5-m, ...
... telescope(s) • NEO candidates posted <15 min after reporting • Bright objects (< V~20) usually followed by other observing stations, often amateurs • Faint object follow-up conducted on our 1.5-m, ...
Subject: Telescope Remote Control over Wireless IP Networks
... Instruments Corporation’s new Autostar Suites software as a means to remotely control my backyard telescope. The following details describe a work in progress but one that shows promise for providing a more comfortable method of enjoying our wonderful amateur astronomy hobby. Autostar Suites Softwar ...
... Instruments Corporation’s new Autostar Suites software as a means to remotely control my backyard telescope. The following details describe a work in progress but one that shows promise for providing a more comfortable method of enjoying our wonderful amateur astronomy hobby. Autostar Suites Softwar ...
Integrative Studies 410 Our Place in the Universe
... distance ladder out as far as we can see Cepheids – about 50 million ly • In 1920 Hubble used this technique to measure the distance to Andromeda (about 2 million ly) • Works best for periodic variables ...
... distance ladder out as far as we can see Cepheids – about 50 million ly • In 1920 Hubble used this technique to measure the distance to Andromeda (about 2 million ly) • Works best for periodic variables ...
The Universe Section 1
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
CosmologyL1
... Newtonian static Universe: stars as our Sun are distributed evenly through infinite space Stars are located in a disc-shaped assembly (MW) Hershels identified the disc structure (Sun still at the center) 1700s ...
... Newtonian static Universe: stars as our Sun are distributed evenly through infinite space Stars are located in a disc-shaped assembly (MW) Hershels identified the disc structure (Sun still at the center) 1700s ...
The Naked Eye Era
... Hipparchus’s sky survey, as incorporated into the work of Ptolemy and Ulugh Beg, saw few major refinements until Tycho Brahe (1546–1601) decided to devote his career to astrometry—the precise measurement of star positions. Tycho was inspired by two celestial events early in his career; the appearanc ...
... Hipparchus’s sky survey, as incorporated into the work of Ptolemy and Ulugh Beg, saw few major refinements until Tycho Brahe (1546–1601) decided to devote his career to astrometry—the precise measurement of star positions. Tycho was inspired by two celestial events early in his career; the appearanc ...
Earth in the Universe Answer each in your binder or notebook. Date
... Structures in the universe are grouped into large systems, each of which are made up of smaller systems. Which of the following is the largest system of which Earth is only a very small part? A. Jovian planets B. Halley’s comet C. Milky Way galaxy D. Orion’s belt ...
... Structures in the universe are grouped into large systems, each of which are made up of smaller systems. Which of the following is the largest system of which Earth is only a very small part? A. Jovian planets B. Halley’s comet C. Milky Way galaxy D. Orion’s belt ...
Slides from Lecture04
... • The brightest stars were labeled “1st magnitude” stars • Successively fainter stars were catalogued as 2nd magnitude, 3rd magnitude, etc. • Faintest stars (visible to the “naked eye”) were catalogued by Greek astronomers as 6th magnitude stars. • Astronomers continue to use this “magnitude” system ...
... • The brightest stars were labeled “1st magnitude” stars • Successively fainter stars were catalogued as 2nd magnitude, 3rd magnitude, etc. • Faintest stars (visible to the “naked eye”) were catalogued by Greek astronomers as 6th magnitude stars. • Astronomers continue to use this “magnitude” system ...
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.