slides - Caltech Astronomy
... Vignetting: the size of the secondary mirror is the first limiting factor for FoV at Cass focus ...
... Vignetting: the size of the secondary mirror is the first limiting factor for FoV at Cass focus ...
section 6 powerpoint
... The ST8 CCD camera at the old BGO operated at an effective telescope focal length of f = 4924 mm. The image scale for the CCD camera was therefore: ...
... The ST8 CCD camera at the old BGO operated at an effective telescope focal length of f = 4924 mm. The image scale for the CCD camera was therefore: ...
Design and Fabrication of an Optical System for a Balloon
... The mirror is machined on a Nanoform 600 DTM coupled with the FLORA II fast tool servo built at the PEC. The off-axis parabolic section is machined on axis by translating the shape to the center of rotation, tilting it and finding the best fit rotationally symmetric surface with a sag of 13 mm for t ...
... The mirror is machined on a Nanoform 600 DTM coupled with the FLORA II fast tool servo built at the PEC. The off-axis parabolic section is machined on axis by translating the shape to the center of rotation, tilting it and finding the best fit rotationally symmetric surface with a sag of 13 mm for t ...
Ay 7A - Fall 2010 Section Worksheet 5 Telescopes
... (a) Build a 100 meter optical telescope(with no adaptive optics) on Earth. The telescope’s resolution will be completely limited by atmospheric seeing. It will be able to gather a lot of light quickly, but even with its huge size it will still be limited to 1’’ -- 2’’ resolution. Shaving 10--20 mete ...
... (a) Build a 100 meter optical telescope(with no adaptive optics) on Earth. The telescope’s resolution will be completely limited by atmospheric seeing. It will be able to gather a lot of light quickly, but even with its huge size it will still be limited to 1’’ -- 2’’ resolution. Shaving 10--20 mete ...
The definition of a microscope: An instrument for viewing objects that
... The definition of a microscope: An instrument for viewing objects that are too small to be seen easily by the naked eye. Circa 1284 - Italian, Salvino D'Armate is credited with inventing the first wearable eye glasses. Hans Lippershey (ca. 1570-1619), a German-Dutch lens grinder and spectacle (glass ...
... The definition of a microscope: An instrument for viewing objects that are too small to be seen easily by the naked eye. Circa 1284 - Italian, Salvino D'Armate is credited with inventing the first wearable eye glasses. Hans Lippershey (ca. 1570-1619), a German-Dutch lens grinder and spectacle (glass ...
No Slide Title
... • The objective lens or mirror collects light and brings it to focus creating an image. The eyepiece is placed at the focal point of the objective to magnify this image. • The amount of magnification depends on the focal length of the eyepiece. ...
... • The objective lens or mirror collects light and brings it to focus creating an image. The eyepiece is placed at the focal point of the objective to magnify this image. • The amount of magnification depends on the focal length of the eyepiece. ...
TELESCOPES: An Introduction to Your Galileoscope
... – They have a much larger field – Most “spotting” telescopes are Keplerians with an additional “erecting” lens ...
... – They have a much larger field – Most “spotting” telescopes are Keplerians with an additional “erecting” lens ...
History of Telescopes
... http://amazing-space.stsci.edu/tonights_sky/ 1. Which planets will be visible just after sun down? Which direction? Are they visible all month long? 2. What planet takes the place of Venus? When does this happen? What direction? 3. In the late evening, which planet should you watch for rising in the ...
... http://amazing-space.stsci.edu/tonights_sky/ 1. Which planets will be visible just after sun down? Which direction? Are they visible all month long? 2. What planet takes the place of Venus? When does this happen? What direction? 3. In the late evening, which planet should you watch for rising in the ...
Document
... through telescopes for the purpose of astronomical study. Up until the early-1980’s, the principal light detector that optical astronomers used was the photographic plate. This consisted of a flat piece of rectangular glass about 1/4 of an inch thick which was coated on one side with a photographi ...
... through telescopes for the purpose of astronomical study. Up until the early-1980’s, the principal light detector that optical astronomers used was the photographic plate. This consisted of a flat piece of rectangular glass about 1/4 of an inch thick which was coated on one side with a photographi ...
Telescopes
... The modern standard for collecting visible light is the charge-couple device (CCD). The CCD chip is made of a silicon wafer that absorbs photons of light and records the electric charge in microscopic “wells”. CCDs can only measure brightness. They do not ...
... The modern standard for collecting visible light is the charge-couple device (CCD). The CCD chip is made of a silicon wafer that absorbs photons of light and records the electric charge in microscopic “wells”. CCDs can only measure brightness. They do not ...
Phys 100 – Astronomy (Dr. Ilias Fernini) Review Questions for
... a. there is less air to dim the light. b. the seeing is better. c. CCDs work better when there is less oxygen in the air. d. all of the above * e. a and b 8. Ultraviolet radiation from a star * a. will not penetrate Earth's atmosphere and reach the ground. b. has a wavelength that is longer than the ...
... a. there is less air to dim the light. b. the seeing is better. c. CCDs work better when there is less oxygen in the air. d. all of the above * e. a and b 8. Ultraviolet radiation from a star * a. will not penetrate Earth's atmosphere and reach the ground. b. has a wavelength that is longer than the ...
LOFT_group_developme.. - LOFT, Large Optics Fabrication and
... • Large Optics Fabrication and Testing for New Telescopes • Advanced measurement technologies • Superpolishing techniques • Optomechanical Engineering • Computer modeling ...
... • Large Optics Fabrication and Testing for New Telescopes • Advanced measurement technologies • Superpolishing techniques • Optomechanical Engineering • Computer modeling ...
astro20 telescopes - Las Positas College
... Still other designs involve extra mirrors to guide light to various measuring instruments – one or more mirrors placed in a Cassegrain telescope causing light to reach a focus down a tube aligned along the north pole to large intruments in a separate room (called a Coude’ focus) – allows for very fi ...
... Still other designs involve extra mirrors to guide light to various measuring instruments – one or more mirrors placed in a Cassegrain telescope causing light to reach a focus down a tube aligned along the north pole to large intruments in a separate room (called a Coude’ focus) – allows for very fi ...
Reminiscing about Mt. Wilson 60
... But the great magnifying power of the telescope makes it unsuitable for a lot of other deep sky objects. Many galaxies are either too faint, too large, or too far north or south to be seen through the 60-inch. But planetary nebula, and globular clusters are much bigger, and much brighter, than any ...
... But the great magnifying power of the telescope makes it unsuitable for a lot of other deep sky objects. Many galaxies are either too faint, too large, or too far north or south to be seen through the 60-inch. But planetary nebula, and globular clusters are much bigger, and much brighter, than any ...
Ay 20 - Caltech
... (a) Using the Rayleigh criterion, estimate the theoretical diffraction limit for the angular resolution of a typical 20 cm (8 in) amateur telescope at 550 nm. Express your answer in arcseconds. (b) Using the information in Appendix C, estimate the minimum size of crater on the moon that can be resol ...
... (a) Using the Rayleigh criterion, estimate the theoretical diffraction limit for the angular resolution of a typical 20 cm (8 in) amateur telescope at 550 nm. Express your answer in arcseconds. (b) Using the information in Appendix C, estimate the minimum size of crater on the moon that can be resol ...
Telescope: Angular Resolution
... • Refraction: as a beam of light passes from one transparent medium into another—say, from air into glass, or from glass back into air—the direction of the light can change • Refraction is caused by the change in the speed of light – Vacuum: 3.0 X 105 km/s – Glass: 2.0 X 105 km/s ...
... • Refraction: as a beam of light passes from one transparent medium into another—say, from air into glass, or from glass back into air—the direction of the light can change • Refraction is caused by the change in the speed of light – Vacuum: 3.0 X 105 km/s – Glass: 2.0 X 105 km/s ...
Optics and Telescope
... • Refraction: as a beam of light passes from one transparent medium into another—say, from air into glass, or from glass back into air—the direction of the light can change • Refraction is caused by the change in the speed of light – Vacuum: 3.0 X 105 km/s – Glass: 2.0 X 105 km/s ...
... • Refraction: as a beam of light passes from one transparent medium into another—say, from air into glass, or from glass back into air—the direction of the light can change • Refraction is caused by the change in the speed of light – Vacuum: 3.0 X 105 km/s – Glass: 2.0 X 105 km/s ...
Lecture 15, 10/21/99 - University of Rochester
... also been added around the edge, to prevent the detectors from seeing the ground even when the beam spills off the primary. These upgrades lead to a larger viewable field and greatly improved sensitivity. For three decades the Effelsberg 100 m, illustrated in Figure 15.4 and Figure 15.5, has been th ...
... also been added around the edge, to prevent the detectors from seeing the ground even when the beam spills off the primary. These upgrades lead to a larger viewable field and greatly improved sensitivity. For three decades the Effelsberg 100 m, illustrated in Figure 15.4 and Figure 15.5, has been th ...
Slides
... •The HartRAO LLR will be a highly accurate system, consisting of integrated optical, mechanical, electronic and software units • Requires the development of several new subsystems, including characterization and constant monitoring of the optical ...
... •The HartRAO LLR will be a highly accurate system, consisting of integrated optical, mechanical, electronic and software units • Requires the development of several new subsystems, including characterization and constant monitoring of the optical ...
Who actually invented the astronomical telescope?
... included this sketch in a letter written in August 1609. ...
... included this sketch in a letter written in August 1609. ...
ancient telescopes - UNICUS magazine.com
... Telescope, with a Single Mirror and No Eyepiece. “Such an instrument is one of the most simple forms of a telescope, and would exhibit a brilliant and interesting view of the moon, or of terrestrial objects.” Speaking again of Herschel, who discovered Uranus and several of its moons in the eighteent ...
... Telescope, with a Single Mirror and No Eyepiece. “Such an instrument is one of the most simple forms of a telescope, and would exhibit a brilliant and interesting view of the moon, or of terrestrial objects.” Speaking again of Herschel, who discovered Uranus and several of its moons in the eighteent ...
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Microsoft PowerPoint - file [jen pro \350ten\355]
... • 1604 - Johannes Kepler - a correct explanation of their operation • 1784 – Benjamin Franklin – bifocals - the two lens sections were held by the frame (1908 bifocals with the sections fused together) • 1827 - George Airy - introduced the use of a cylindrical lens • 1636 - René Descartes - suggeste ...
... • 1604 - Johannes Kepler - a correct explanation of their operation • 1784 – Benjamin Franklin – bifocals - the two lens sections were held by the frame (1908 bifocals with the sections fused together) • 1827 - George Airy - introduced the use of a cylindrical lens • 1636 - René Descartes - suggeste ...
Key Stage 2: Teacher`s Pack
... 2. What was the name of the first artificial satellite, launched in 1957? Sputnik 3. What can you use to get a better view of the stars? Telescope 4. What do we call the spinning core of an exploded star? Pulsar 5. Where is the home of the telescope? (Hint: this is two words) Jodrell Bank 6. You nee ...
... 2. What was the name of the first artificial satellite, launched in 1957? Sputnik 3. What can you use to get a better view of the stars? Telescope 4. What do we call the spinning core of an exploded star? Pulsar 5. Where is the home of the telescope? (Hint: this is two words) Jodrell Bank 6. You nee ...
Telescopes and Astronomical Instruments
... Make your own correction star… Using “Star Wars” technology, today we are trying to make groundbased telescopes have sharper vision than Hubble (but only over a tiny patch of sky), along with their superior light-gathering power. ...
... Make your own correction star… Using “Star Wars” technology, today we are trying to make groundbased telescopes have sharper vision than Hubble (but only over a tiny patch of sky), along with their superior light-gathering power. ...
Diffraction of Light - Flagstaff High School
... Reflecting telescopes are often cheaper ($$$) to make than similarly sized refracting telescopes. ...
... Reflecting telescopes are often cheaper ($$$) to make than similarly sized refracting telescopes. ...
Lovell Telescope
The Lovell Telescope /ˈlʌvəl/ is a radio telescope at Jodrell Bank Observatory, near Goostrey, Cheshire in the north-west of England. When construction was finished in 1957, the telescope was the largest steerable dish radio telescope in the world at 76.2 m (250 ft) in diameter;it is now the third largest, after the Green Bank telescope in West Virginia, USA, and the Effelsberg telescope in Germany.It was originally known as the ""250 ft telescope"" or the Radio Telescope at Jodrell Bank, before becoming the Mark I telescope around 1961 when future telescopes (the Mark II, III, and IV) were being discussed. It was renamed to the Lovell Telescope in 1987 after Sir Bernard Lovell, and became a Grade I listed building in 1988. The telescope forms part of the MERLIN and European VLBI Network arrays of radio telescopes.Both Bernard Lovell and Charles Husband were knighted for their roles in creating the telescope. In September 2006, the telescope won the BBC's online competition to find the UK's greatest ""Unsung Landmark"". 2007 marked the 50th anniversary of the telescope.If the air is clear enough, the Mark I telescope can be seen from high-rise buildings in Manchester such as the Beetham Tower, and from as far away as the Pennines, Winter Hill in Lancashire, Snowdonia, Beeston Castle in Cheshire, and the Peak District. It can also be seen from the Terminal 1 restaurant area and departure lounges of Manchester Airport.