3 Exam #1
... Appearance & Motion of Sky 28. Will the full moon be visible shortly after sunset on a clear night? Where will it be? Explain why? 29. Explain why a first quarter moon sets approximately six hours after sunset. 30. Describe a simple observation which demonstrates why shadows of Earth cannot cause th ...
... Appearance & Motion of Sky 28. Will the full moon be visible shortly after sunset on a clear night? Where will it be? Explain why? 29. Explain why a first quarter moon sets approximately six hours after sunset. 30. Describe a simple observation which demonstrates why shadows of Earth cannot cause th ...
P1 - Foundation
... Earth was the centre of the Universe. This was called the geocentric model. The evidence for this model came from observations of the sky using the naked eye. After the telescope was invented, astronomers quickly gathered evidence which showed that the geocentric model is not correct. Describe the e ...
... Earth was the centre of the Universe. This was called the geocentric model. The evidence for this model came from observations of the sky using the naked eye. After the telescope was invented, astronomers quickly gathered evidence which showed that the geocentric model is not correct. Describe the e ...
Tools of Astronomy
... 6. All the information we receive beyond the Earth comes through the ______________ spectrum (light) radiating from other stars and galaxies. Recall that light travels as a ________. The electromagnetic spectrum is full of waves, long and________. Most of it we cannot see with our eyes, but we can b ...
... 6. All the information we receive beyond the Earth comes through the ______________ spectrum (light) radiating from other stars and galaxies. Recall that light travels as a ________. The electromagnetic spectrum is full of waves, long and________. Most of it we cannot see with our eyes, but we can b ...
Justin Linford (MSU)
... The angular resolution is then determined by the largest distance between two dishes. ...
... The angular resolution is then determined by the largest distance between two dishes. ...
The myopia in the Hubble space telescope
... Foucault and Hartmann tests, the configuration with a hyberboloidal surface would produce spherical aberration, making high precision testing difficult. So the main problem in testing a hyperboloid surface is the spherical aberration. It has been common for about thirty years ago, to construct an op ...
... Foucault and Hartmann tests, the configuration with a hyberboloidal surface would produce spherical aberration, making high precision testing difficult. So the main problem in testing a hyperboloid surface is the spherical aberration. It has been common for about thirty years ago, to construct an op ...
Wazzat Mean - Peterborough Astronomical Association
... The two times each year, near March 20th and September 22nd, when the Sun is directly overhead at noon as seen from Earth’s equator. On an equinox date, day and night are of equal length. Eyepiece The part of a telescope that you look into. A telescope’s magnification can be changed by using eyepiec ...
... The two times each year, near March 20th and September 22nd, when the Sun is directly overhead at noon as seen from Earth’s equator. On an equinox date, day and night are of equal length. Eyepiece The part of a telescope that you look into. A telescope’s magnification can be changed by using eyepiec ...
Astrophotography Manual
... in the view, place the star in the position in the view such that the target object will most likely be in the view too. Remember to focus to infinity and set to the largest aperature. If your area is affected by sky fog, use a red camera filter (25A) to reduce the fog. 5.2. Films Different types of ...
... in the view, place the star in the position in the view such that the target object will most likely be in the view too. Remember to focus to infinity and set to the largest aperature. If your area is affected by sky fog, use a red camera filter (25A) to reduce the fog. 5.2. Films Different types of ...
Nov - Wadhurst Astronomical Society
... From the star on the extreme left of Andromeda, draw a line in the general direction of the horizon that makes a 60º angle with Andromeda itself. This line will pass through Triangulum and then Aries. Drawing a line down from the two right hand stars in the Square of Pegasus southwards leads to Foma ...
... From the star on the extreme left of Andromeda, draw a line in the general direction of the horizon that makes a 60º angle with Andromeda itself. This line will pass through Triangulum and then Aries. Drawing a line down from the two right hand stars in the Square of Pegasus southwards leads to Foma ...
teachers` answers for Secondary Visit Guide and Activities
... infrared; radio; gamma-ray; ultraviolet; microwave; visible. Gamma-ray, X-ray, ultraviolet, visible, infrared, microwave, radio What are they part of? The electromagnetic spectrum Why do we use infrared telescopes to look at objects in space? Infrared light can penetrate dust allowing us to see more ...
... infrared; radio; gamma-ray; ultraviolet; microwave; visible. Gamma-ray, X-ray, ultraviolet, visible, infrared, microwave, radio What are they part of? The electromagnetic spectrum Why do we use infrared telescopes to look at objects in space? Infrared light can penetrate dust allowing us to see more ...
Unit 1 Test
... ____ 69. Frequency involves the number of pulses of energy past a certain point in a specific amount of time. ____ 70. A geocentric universe places the Earth at the center. ____ 71. The speed of light is also known as the cosmological constant. ____ 72. We can obviously see in the visible portion of ...
... ____ 69. Frequency involves the number of pulses of energy past a certain point in a specific amount of time. ____ 70. A geocentric universe places the Earth at the center. ____ 71. The speed of light is also known as the cosmological constant. ____ 72. We can obviously see in the visible portion of ...
ASTR 511 (O’Connell) FALL 2003 DUE FRIDAY SEPTEMBER 19
... takes the star to drift across the entire field of view (in seconds). You want the star to move across the full diameter of your field of view. Record your estimate of the measurement uncertainty in the drift time. Repeat this measurement once and record the time. A-5 Repeat the whole procedure, sta ...
... takes the star to drift across the entire field of view (in seconds). You want the star to move across the full diameter of your field of view. Record your estimate of the measurement uncertainty in the drift time. Repeat this measurement once and record the time. A-5 Repeat the whole procedure, sta ...
Test 2 Review Topics
... 7. Be able to determine which band of the electromagnetic spectrum (gamma-rays radio) has the highest or lowest λ, ν, and energy. 8. Determine which star is hotter from the color. 9. What is an atmospheric window? 10. Recall whether a lens or mirror is used as the primary objective for refracting ...
... 7. Be able to determine which band of the electromagnetic spectrum (gamma-rays radio) has the highest or lowest λ, ν, and energy. 8. Determine which star is hotter from the color. 9. What is an atmospheric window? 10. Recall whether a lens or mirror is used as the primary objective for refracting ...
06-angles and resolution
... Can distinguish shapes and shading of light of objects with angular sizes of a few arcminutes ...
... Can distinguish shapes and shading of light of objects with angular sizes of a few arcminutes ...
PPT
... SOT (optics), XRT (camera), EIS (I/f to S/C) NASA (US): SOT (focal plane package), XRT (optics / mech.), EIS (optics components), NASA polar station(s) ...
... SOT (optics), XRT (camera), EIS (I/f to S/C) NASA (US): SOT (focal plane package), XRT (optics / mech.), EIS (optics components), NASA polar station(s) ...
WhyIYA - DEP
... myth of Rahu -Ketu, Galileo was punished by the orthodoxy in Europe for daring to put forth his theories. He was to suffer for many years for upholding science and sprit of quest against mindless dogma. ...
... myth of Rahu -Ketu, Galileo was punished by the orthodoxy in Europe for daring to put forth his theories. He was to suffer for many years for upholding science and sprit of quest against mindless dogma. ...
Solar Instruments for Observing the Sun for Amateurs
... Gives Excellent Image, better then Film Needs to used with telescopes of 4” or less Needs additional Filtration Some Safety Concerns Color Filters ...
... Gives Excellent Image, better then Film Needs to used with telescopes of 4” or less Needs additional Filtration Some Safety Concerns Color Filters ...
Lab Writeup
... and magnifies an astronomical object. Until the end of the 19th century, all observational work in astronomy was based on observations made at the eyepiece of a telescope. Nowadays, even though astronomical research relies on much more sophisticated types of measurements, an introductory course in a ...
... and magnifies an astronomical object. Until the end of the 19th century, all observational work in astronomy was based on observations made at the eyepiece of a telescope. Nowadays, even though astronomical research relies on much more sophisticated types of measurements, an introductory course in a ...
2012-13_1st_Sem_Final_ SG
... Can you explain the difference between the objective lens or mirror and the eyepiece in a telescope? Can you explain the difference in the following terms Focal length & aperture Focal ratio & magnification Could you trace light rays as they move through the following telescopes? Reflecting, refract ...
... Can you explain the difference between the objective lens or mirror and the eyepiece in a telescope? Can you explain the difference in the following terms Focal length & aperture Focal ratio & magnification Could you trace light rays as they move through the following telescopes? Reflecting, refract ...
HW4 due - Yale Astronomy
... than the Sun. How far away could a Type Ia supernovae be, and still be detected with the Hubble Space Telescope? Express your answer in light years. ...
... than the Sun. How far away could a Type Ia supernovae be, and still be detected with the Hubble Space Telescope? Express your answer in light years. ...
high-resolution pdf file
... an image of the scene onto a detector. If the subject of the photo is very far away, then the image is sharp (“in focus”) when the distance between the objective and the detector is equal to the focal length of the objective. The longer the focal length, the larger the image on the detector. Long fo ...
... an image of the scene onto a detector. If the subject of the photo is very far away, then the image is sharp (“in focus”) when the distance between the objective and the detector is equal to the focal length of the objective. The longer the focal length, the larger the image on the detector. Long fo ...
Steve Holmes - KWFN October 22 2012 speaker
... tomorrow, in reality the event would have taken place in 5488 BC. Steve’s long-time passion for astronomy grew into astrophotography: he delighted in seeing the night sky, but he wanted to be able to record his observations so that they could be compared with those taken at other times, as well as s ...
... tomorrow, in reality the event would have taken place in 5488 BC. Steve’s long-time passion for astronomy grew into astrophotography: he delighted in seeing the night sky, but he wanted to be able to record his observations so that they could be compared with those taken at other times, as well as s ...
Planetary Portraits - a Nature News Feature.
... Designs for the TPF and Darwin have focused on the use of nulling interferometers that operate in the infrared spectrum. These devices combine images from several telescopes.If the distances between them are chosen correctly,the starlight that reaches the different telescopes will be out of phase an ...
... Designs for the TPF and Darwin have focused on the use of nulling interferometers that operate in the infrared spectrum. These devices combine images from several telescopes.If the distances between them are chosen correctly,the starlight that reaches the different telescopes will be out of phase an ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... shock waves give rise to a longer-lasting afterglow emission. The afterglow of GRB 130427A—which spanned from radio waves to gamma rays—persisted for weeks. ‘A Rosetta-Stone event’ What made this burst different from most others is that the sheer power of the explosion so comparatively nearby allowe ...
... shock waves give rise to a longer-lasting afterglow emission. The afterglow of GRB 130427A—which spanned from radio waves to gamma rays—persisted for weeks. ‘A Rosetta-Stone event’ What made this burst different from most others is that the sheer power of the explosion so comparatively nearby allowe ...
History of the telescope
The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey. Among many others who claimed to have made the discovery were Zacharias Janssen, a spectacle-maker in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex objective lens and a concave eyepiece. Galileo used this design the following year. In 1611, Johannes Kepler described how a telescope could be made with a convex objective lens and a convex eyepiece lens and by 1655 astronomers such as Christiaan Huygens were building powerful but unwieldy Keplerian telescopes with compound eyepieces. Hans Lippershey is the earliest person documented to have applied for a patent for the device.Isaac Newton is credited with building the first ""practical"" reflector in 1668 with a design that incorporated a small flat diagonal mirror to reflect the light to an eyepiece mounted on the side of the telescope. Laurent Cassegrain in 1672 described the design of a reflector with a small convex secondary mirror to reflect light through a central hole in the main mirror.The achromatic lens, which greatly reduced color aberrations in objective lenses and allowed for shorter and more functional telescopes, first appeared in a 1733 telescope made by Chester Moore Hall, who did not publicize it. John Dollond learned of Hall's invention and began producing telescopes using it in commercial quantities, starting in 1758.Important developments in reflecting telescopes were John Hadley's production of larger paraboloidal mirrors in 1721; the process of silvering glass mirrors introduced by Léon Foucault in 1857; and the adoption of long lasting aluminized coatings on reflector mirrors in 1932. Almost all of the large optical research telescopes used today are reflectors.The era of radio telescopes (along with radio astronomy) was born with Karl Guthe Jansky's serendipitous discovery of an astronomical radio source in 1931. Many types of telescopes were developed in the 20th century for a wide range of wavelengths from radio to gamma-rays.