galaxy.
... Shapely (Harvard): Argued that spiral nebulae were inside our galaxy for several reasons • Galaxy was huge (he didn’t know about dust). • van Maanen’s observations showed that one spiral nebula, M 101, could be observed to rotate. It it were outside our galaxy, it would have to be turning faster tha ...
... Shapely (Harvard): Argued that spiral nebulae were inside our galaxy for several reasons • Galaxy was huge (he didn’t know about dust). • van Maanen’s observations showed that one spiral nebula, M 101, could be observed to rotate. It it were outside our galaxy, it would have to be turning faster tha ...
Magnification and Field of View: An Introduction
... Degrees can be divided into smaller units. There are 60 arcminutes (denoted 60′ ) in a degree and 60 arcseconds (denoted 60′′ ) in an arcminute. Thus, 1◦ = 60′ = 3600′′ . The angular size of your thumb at arm’s length is ∼ 1◦ , whereas the angular size of the full Moon is .5◦ = 30′ , which is why yo ...
... Degrees can be divided into smaller units. There are 60 arcminutes (denoted 60′ ) in a degree and 60 arcseconds (denoted 60′′ ) in an arcminute. Thus, 1◦ = 60′ = 3600′′ . The angular size of your thumb at arm’s length is ∼ 1◦ , whereas the angular size of the full Moon is .5◦ = 30′ , which is why yo ...
2.1. Telescopes
... rays to a single point. All modern research telescopes and large amateur ones are of the reflector type because of its advantages over the refractor telescope. Advantages 1. Reflector telescopes do not suffer from chromatic aberration because all wavelengths will reflect off the mirror in the same w ...
... rays to a single point. All modern research telescopes and large amateur ones are of the reflector type because of its advantages over the refractor telescope. Advantages 1. Reflector telescopes do not suffer from chromatic aberration because all wavelengths will reflect off the mirror in the same w ...
file - Observatory Sciences
... Observatory (ESO) has come down in favour of the Data Distribution Service (DDS) software for the rapid distribution of large amounts of control data required by the control system. The scale of the E-ELT project and the complexity of the control requirements makes the choice of software framework c ...
... Observatory (ESO) has come down in favour of the Data Distribution Service (DDS) software for the rapid distribution of large amounts of control data required by the control system. The scale of the E-ELT project and the complexity of the control requirements makes the choice of software framework c ...
Light-gathering power
... a. Cosmic rays are high-energy photons that penetrate the surfaces of telescope mirrors rather than reflecting to a focal point. *b. Cosmic rays are charged particles, thus their paths are curved by magnetic fields, which masks the location of their source. c. Cosmic rays are neutral particles that ...
... a. Cosmic rays are high-energy photons that penetrate the surfaces of telescope mirrors rather than reflecting to a focal point. *b. Cosmic rays are charged particles, thus their paths are curved by magnetic fields, which masks the location of their source. c. Cosmic rays are neutral particles that ...
A Dart Board for the Bored An eye opening offer from the editors of
... during the course of the evening. Our group is now your group and I know that I’m speaking for all the members when I say that we will be more than happy to give you a helping hand in any endeavor you may be contemplating in the ever expanding field of astronomy. To all the returning “old” members, ...
... during the course of the evening. Our group is now your group and I know that I’m speaking for all the members when I say that we will be more than happy to give you a helping hand in any endeavor you may be contemplating in the ever expanding field of astronomy. To all the returning “old” members, ...
The Milky Way
... a. Cosmic rays are high-energy photons that penetrate the surfaces of telescope mirrors rather than reflecting to a focal point. b. Cosmic rays are charged particles, thus their paths are curved by magnetic fields, which masks the location of their source. c. Cosmic rays are neutral particles that w ...
... a. Cosmic rays are high-energy photons that penetrate the surfaces of telescope mirrors rather than reflecting to a focal point. b. Cosmic rays are charged particles, thus their paths are curved by magnetic fields, which masks the location of their source. c. Cosmic rays are neutral particles that w ...
PDF introduction
... used no wavefront reduction at all, relying on the raw longitudinal aberration measurements and the relative insensitivity to error of the slow reflectors being made at the time. After Texereau, amateur telescope-making improved a great deal. Aperture ratios came down and the test-reduction techniqu ...
... used no wavefront reduction at all, relying on the raw longitudinal aberration measurements and the relative insensitivity to error of the slow reflectors being made at the time. After Texereau, amateur telescope-making improved a great deal. Aperture ratios came down and the test-reduction techniqu ...
Slide 1
... star, and measure that star’s photometric output. In this way, SPARTAN-V will create a telescopic pointing system capable of astronomical observing for future payloads. ...
... star, and measure that star’s photometric output. In this way, SPARTAN-V will create a telescopic pointing system capable of astronomical observing for future payloads. ...
SALT/SAAO introduction
... a precision of 3 microns. A tracker with 10 degrees of freedom then follows the target, as the Earth rotates, for up to ~2.5 hours. The telescope can be moved from one object to another in < 5 min. Optical fibres can relay light from several objects (10-20) in the field to instruments in the the bas ...
... a precision of 3 microns. A tracker with 10 degrees of freedom then follows the target, as the Earth rotates, for up to ~2.5 hours. The telescope can be moved from one object to another in < 5 min. Optical fibres can relay light from several objects (10-20) in the field to instruments in the the bas ...
octl
... independent cloud visibility data from real time weather maps and star attenuation. Background corrected signals can be seen for an example case shown in Fig. 3 where the cloud signals follow the strong Raleigh backscatter. Tracking several satellites over the course of a cloudy night verified the a ...
... independent cloud visibility data from real time weather maps and star attenuation. Background corrected signals can be seen for an example case shown in Fig. 3 where the cloud signals follow the strong Raleigh backscatter. Tracking several satellites over the course of a cloudy night verified the a ...
ATLAST 9.2: A Deployable Large Aperture UVOIR Space
... ground intervention. A schematic of one of the combined Fine guidance sensor (FGS) and WFS sensors is shown in Figure 1. Light from the OTA is fed to the FGS/WFS via a pick-off mirror. A bi-directional fine steering mirror (FSM) is used to access a 4’x4’ FOV and steer an isolated star onto the FGS/W ...
... ground intervention. A schematic of one of the combined Fine guidance sensor (FGS) and WFS sensors is shown in Figure 1. Light from the OTA is fed to the FGS/WFS via a pick-off mirror. A bi-directional fine steering mirror (FSM) is used to access a 4’x4’ FOV and steer an isolated star onto the FGS/W ...
california association for research in astronomy
... A suitable open cluster will be acquired and the AO loops closed on a central member of the cluster using the normal NGS mode. This will ensure stable focus and pointing during the test. A target away from transit is desirable to minimize the field rotation during the test. Since there are two compo ...
... A suitable open cluster will be acquired and the AO loops closed on a central member of the cluster using the normal NGS mode. This will ensure stable focus and pointing during the test. A target away from transit is desirable to minimize the field rotation during the test. Since there are two compo ...
Millennium Telescope
... make and achieve weight targets - but design is more speculative. Mirror box is proven design but much ...
... make and achieve weight targets - but design is more speculative. Mirror box is proven design but much ...
Oct 2015 - Bays Mountain Park
... off of him before they reached Olympus. Pegasus continued on and Zeus took control of him and used him to carry his thunder and lighting. Later Zeus put him in up in the constellations, according to Greek mythology. It was one of the 48 constellations listed by the astronomer Ptolemy. I am sure every ...
... off of him before they reached Olympus. Pegasus continued on and Zeus took control of him and used him to carry his thunder and lighting. Later Zeus put him in up in the constellations, according to Greek mythology. It was one of the 48 constellations listed by the astronomer Ptolemy. I am sure every ...
25 Years of the Hubble Space Telescope - Speaker
... In July, 1958, the National Aeronautics and Space Administration (NASA) was formed under the National Aeronautics and Space Act, less than a year after the launch of Sputnik on Oct. 4, 1957. A 1962 study by the National Academies of Sciences recommended that a space telescope become one of the US na ...
... In July, 1958, the National Aeronautics and Space Administration (NASA) was formed under the National Aeronautics and Space Act, less than a year after the launch of Sputnik on Oct. 4, 1957. A 1962 study by the National Academies of Sciences recommended that a space telescope become one of the US na ...
exploring the solar system, the galaxies, and the
... AND THE UNIVERSE WITH THE HUBBLE SPACE TELESCOPE This is an online pre-lab exercise designed to show you the resources for studying our universe that are available on the Hubble Telescope Web site, located at http://hubblesite.org. You will also link with the site Amazing Space (http://amazing-space ...
... AND THE UNIVERSE WITH THE HUBBLE SPACE TELESCOPE This is an online pre-lab exercise designed to show you the resources for studying our universe that are available on the Hubble Telescope Web site, located at http://hubblesite.org. You will also link with the site Amazing Space (http://amazing-space ...
the biggest game in the cosmos
... And so, as it has become clear that brute force won’t work, the Giant Magellan team will try cleverness. When the wind bends the big mirror segments out of alignment, small and fast actuators will eliminate the distortion by tipping and tilting each of the segments in a secondary mirror array loca ...
... And so, as it has become clear that brute force won’t work, the Giant Magellan team will try cleverness. When the wind bends the big mirror segments out of alignment, small and fast actuators will eliminate the distortion by tipping and tilting each of the segments in a secondary mirror array loca ...
telescope
... California was one of the early reflecting telescopes of the 20th century. This is the telescope that Edwin Hubble used to measure galaxy redshifts. This led to the discovery that the Universe is expanding and not static, as was originally thought. The expansion of the universe is one of the landmar ...
... California was one of the early reflecting telescopes of the 20th century. This is the telescope that Edwin Hubble used to measure galaxy redshifts. This led to the discovery that the Universe is expanding and not static, as was originally thought. The expansion of the universe is one of the landmar ...
VI. Preferred Location of Telescopes
... The Keck telescope on Mauna Kea in Hawaii sit at 13,600 ft … above 40% of the atmosphere. * ...
... The Keck telescope on Mauna Kea in Hawaii sit at 13,600 ft … above 40% of the atmosphere. * ...
Chapter5-Questions
... Diffraction limits resolution; larger telescopes & shorter wave light produces sharper images. ...
... Diffraction limits resolution; larger telescopes & shorter wave light produces sharper images. ...
A Faint Star Orbiting the Big Dipper’s Alcor Discovered
... “Galilean” moons. That’s not what he called them, however! Galileo was looking for patronage from the Grand Duke of Florence – the Grand Duke Cosimo II de’ Medici. So Galileo named these the “Medicean Stars”. It worked. Galileo was appointed philosopher and mathematician to the Grand Duke, and chief ...
... “Galilean” moons. That’s not what he called them, however! Galileo was looking for patronage from the Grand Duke of Florence – the Grand Duke Cosimo II de’ Medici. So Galileo named these the “Medicean Stars”. It worked. Galileo was appointed philosopher and mathematician to the Grand Duke, and chief ...
Sirius Astronomer - Orange County Astronomers
... the Big Bang. Previous measurements had differed markedly from prediction, and this had been worrying cosmologists for a couple of ...
... the Big Bang. Previous measurements had differed markedly from prediction, and this had been worrying cosmologists for a couple of ...
2.4m Telescope Group Yunnan Observatory of CAS
... ☺ First run with three weeks, 1st week, hardware installation, 2nd week integration with the telescope, 3rd week trial observations; ☺ Results to meet proposal requirements; ☺ Short (<14 days) and long term (~1 yr) RMS precision; ☺ Commissioning targets (≥2 RV stable starts, ≥2 RV known planets (one ...
... ☺ First run with three weeks, 1st week, hardware installation, 2nd week integration with the telescope, 3rd week trial observations; ☺ Results to meet proposal requirements; ☺ Short (<14 days) and long term (~1 yr) RMS precision; ☺ Commissioning targets (≥2 RV stable starts, ≥2 RV known planets (one ...
Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. With a 2.4-meter (7.9 ft) mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra. The telescope is named after the astronomer Edwin Hubble.Hubble's orbit outside the distortion of Earth's atmosphere allows it to take extremely high-resolution images with negligible background light. Hubble has recorded some of the most detailed visible-light images ever, allowing a deep view into space and time. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. The HST was built by the United States space agency NASA, with contributions from the European Space Agency, and is operated by the Space Telescope Science Institute. The HST is one of NASA's Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.Space telescopes were proposed as early as 1923. Hubble was funded in the 1970s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster. When finally launched in 1990, Hubble's main mirror was found to have been ground incorrectly, compromising the telescope's capabilities. The optics were corrected to their intended quality by a servicing mission in 1993.Hubble is the only telescope designed to be serviced in space by astronauts. After launch by Space Shuttle Discovery in 1990, four subsequent Space Shuttle missions repaired, upgraded, and replaced systems on the telescope. A fifth mission was canceled on safety grounds following the Columbia disaster. However, after spirited public discussion, NASA administrator Mike Griffin approved one final servicing mission, completed in 2009. The telescope is still operating as of 2015, and may last until 2030–2040. Its scientific successor, the James Webb Space Telescope (JWST), is scheduled for launch in 2018.