Astronomy 418/518 final practice exam 1. Give short answers to the
... the pixel read time and the count rate. For the case of Chandra, with readouts every 3.2 seconds, above what count rate will the pileup (two or more events) rate exceed 10% of the count rate? ...
... the pixel read time and the count rate. For the case of Chandra, with readouts every 3.2 seconds, above what count rate will the pileup (two or more events) rate exceed 10% of the count rate? ...
21-Zeeman
... supply and gradually increase the current to 10.0 A. Use the gaussmeter to measure the magnetic induction, B (teslas), halfway between the poles. The correct value is the maximum value, obtained when the plane of the probe is held perpendicularly to the field. Decrease the current to zero and switch ...
... supply and gradually increase the current to 10.0 A. Use the gaussmeter to measure the magnetic induction, B (teslas), halfway between the poles. The correct value is the maximum value, obtained when the plane of the probe is held perpendicularly to the field. Decrease the current to zero and switch ...
PH109, Exploring the Universe, Test #1, Spring, 1999
... 22. How can astronomers determine what material distant objects are made of? a) the spectral they give off is unique to the material, b) the temperature of the object is related to the type of material, c) the speed of the object is related to is type of material, d) its Doppler frequency is relate ...
... 22. How can astronomers determine what material distant objects are made of? a) the spectral they give off is unique to the material, b) the temperature of the object is related to the type of material, c) the speed of the object is related to is type of material, d) its Doppler frequency is relate ...
WOMEN OF ASTRONOMY
... • 1888 – Discovered the Horsehead nebula • Noted stars could be organized by hydrogen amounts was observed in their spectra • She Cataloged over 10,000 stars • 1906 – first American woman in the Royal Astronomical Society ...
... • 1888 – Discovered the Horsehead nebula • Noted stars could be organized by hydrogen amounts was observed in their spectra • She Cataloged over 10,000 stars • 1906 – first American woman in the Royal Astronomical Society ...
Mon Feb 20, 2012 PLUTO`S DISCOVERY On February 18, 1930
... On February 18, 1930, Pluto was discovered by Clyde Tombaugh. At the age of 22, Tombaugh began working as an assistant at the Lowell Observatory in Flagstaff, Arizona. He didn't have a University degree, but at the time was a talented amateur astronomer. His number one job was to make and search pho ...
... On February 18, 1930, Pluto was discovered by Clyde Tombaugh. At the age of 22, Tombaugh began working as an assistant at the Lowell Observatory in Flagstaff, Arizona. He didn't have a University degree, but at the time was a talented amateur astronomer. His number one job was to make and search pho ...
A Question Simple Magnifier Magnification by a Lens
... At A, a photographic plate or other detector could be placed ...
... At A, a photographic plate or other detector could be placed ...
Planet Passport Learn about each of the major bodies of the solar
... damage your eyes by using a homemade or inadequate filter. The Grenfell Observatory has a solar telescope which is used for daytime school tours when it is clear. The phases of the moon and its 29-day cycle are familiar to most people .You can observe the Moon with the naked eye, with common binocul ...
... damage your eyes by using a homemade or inadequate filter. The Grenfell Observatory has a solar telescope which is used for daytime school tours when it is clear. The phases of the moon and its 29-day cycle are familiar to most people .You can observe the Moon with the naked eye, with common binocul ...
Telescopes
... diameter telescopes have greater resolving power than smaller ones. • Resolving power is limited because light waves can be diffracted. • Diffraction – • Diffraction limits the resolving power of a telescope. ...
... diameter telescopes have greater resolving power than smaller ones. • Resolving power is limited because light waves can be diffracted. • Diffraction – • Diffraction limits the resolving power of a telescope. ...
BU Astronomy Department – AS 10X courses
... A star chart is a map of the night sky. There is no one set format for a star chart, but they all generally show the locations of the brightest stars and the constellations. Sometimes they also show other “deep sky” objects such as nebulae and galaxies, objects that are typically only seen through t ...
... A star chart is a map of the night sky. There is no one set format for a star chart, but they all generally show the locations of the brightest stars and the constellations. Sometimes they also show other “deep sky” objects such as nebulae and galaxies, objects that are typically only seen through t ...
The Big Eye Now and Then
... To make this artificial star, a laser was broadcast into the sky. This was the first step in creating a laserguide star for use with a technique known as adaptive optics. Adaptive optics allows astronomers to correct for the fuzzy images produced by Earth’s moving atmosphere, giving them a view that ...
... To make this artificial star, a laser was broadcast into the sky. This was the first step in creating a laserguide star for use with a technique known as adaptive optics. Adaptive optics allows astronomers to correct for the fuzzy images produced by Earth’s moving atmosphere, giving them a view that ...
Cherenkov Telescope Arrays Michael Daniel University of Durham
... Observatory operation and accessibility ...
... Observatory operation and accessibility ...
Large telescopes and why we need them Transcript
... Astronomy is a comparatively passive science, in that we can’t engage in laboratory experiments to investigate how the Universe works. To study any cosmic object outside of our Solar System, we can only work with the light it emits that happens to fall on Earth. How much we can interpret and underst ...
... Astronomy is a comparatively passive science, in that we can’t engage in laboratory experiments to investigate how the Universe works. To study any cosmic object outside of our Solar System, we can only work with the light it emits that happens to fall on Earth. How much we can interpret and underst ...
6 Very High Energy Gamma Ray Astronomy with CTA - UZH
... telescope frame, and the power cables and power distribution system have been produced. ...
... telescope frame, and the power cables and power distribution system have been produced. ...
The Search for Earth-like Planets: Yes We Can
... These diffraction rings are too bright. The rings would completely hide the planet. By placing a mask over the pupil, one can control the shape and strength of the diffraction rings. The problem is to find an optimal shape so as to put a very deep null very close to the Airy disk. ...
... These diffraction rings are too bright. The rings would completely hide the planet. By placing a mask over the pupil, one can control the shape and strength of the diffraction rings. The problem is to find an optimal shape so as to put a very deep null very close to the Airy disk. ...
CVs of SA speaker German SA YoS
... research interests focus on X-ray sources, primarily accretion in compact binary stars, for example cataclysmic variables and X-ray binaries. In the early 1990s he led a small group of South African observers in an optical identification campaign for ROSAT EUV and X-ray sources in the Southern Hemis ...
... research interests focus on X-ray sources, primarily accretion in compact binary stars, for example cataclysmic variables and X-ray binaries. In the early 1990s he led a small group of South African observers in an optical identification campaign for ROSAT EUV and X-ray sources in the Southern Hemis ...
Poster
... E. Example SDSS Spectra and Example High-Resolution Calibration Spectra from the Hobby-Eberly Telescope In the left panel below we show some example SDSS spectra. The left most spectra show the full wavelength range from 3800 – 9000 Å with an optimal continuum fit; the middle spectra are the blue po ...
... E. Example SDSS Spectra and Example High-Resolution Calibration Spectra from the Hobby-Eberly Telescope In the left panel below we show some example SDSS spectra. The left most spectra show the full wavelength range from 3800 – 9000 Å with an optimal continuum fit; the middle spectra are the blue po ...