University of Dayton Flyer Observatory (UFO)
... A Ritchey-Chrétien is a specialized Cassegrain reflector utilizing true hyperbolic surfaces. All reflectors typically have an aberration called coma - all except for the Ritchey-Chrétien. The hyperbolic mirrors of the Ritchey-Chrétien make this design coma free, which results in a much smaller spot ...
... A Ritchey-Chrétien is a specialized Cassegrain reflector utilizing true hyperbolic surfaces. All reflectors typically have an aberration called coma - all except for the Ritchey-Chrétien. The hyperbolic mirrors of the Ritchey-Chrétien make this design coma free, which results in a much smaller spot ...
A billion pixels, a billion stars
... stars within that telescope’s field of view (figure 1a). However, with two telescopes that are separated by a (very precisely known) large angle, and that each feed light into a single optical camera, it is possible to measure parallaxes absolutely (figure 1b). This two-telescope method of measuring ...
... stars within that telescope’s field of view (figure 1a). However, with two telescopes that are separated by a (very precisely known) large angle, and that each feed light into a single optical camera, it is possible to measure parallaxes absolutely (figure 1b). This two-telescope method of measuring ...
Lab 2
... In this lab, you will be asked to take spectra with the 24” SBO spectrograph. The goal is to obtain descent high signal-to-noise spectra of stars having a variety of properties. One of the stars, Vega, will be used for “spectral flat-fielding” the other spectra. The data resulting from this exercise ...
... In this lab, you will be asked to take spectra with the 24” SBO spectrograph. The goal is to obtain descent high signal-to-noise spectra of stars having a variety of properties. One of the stars, Vega, will be used for “spectral flat-fielding” the other spectra. The data resulting from this exercise ...
X-ray emission from young pulsar, PWN and SNRs
... the filaments • Most of the filaments contain point-like sources at their heads. • All the filaments cometaryare morphology. The X-ray show filaments most • The spectra are non-thermal, with photon indices probably close to Sgr A* and ...
... the filaments • Most of the filaments contain point-like sources at their heads. • All the filaments cometaryare morphology. The X-ray show filaments most • The spectra are non-thermal, with photon indices probably close to Sgr A* and ...
Infrared - World of Teaching
... Infrared Telescopes • Infrared telescopes work much like visible light telescopes • Light hits parabolic mirror • Light is sent to focal point • Light is recorded by computer and translated into visible light ...
... Infrared Telescopes • Infrared telescopes work much like visible light telescopes • Light hits parabolic mirror • Light is sent to focal point • Light is recorded by computer and translated into visible light ...
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 ...
Article “What Astronomers Do” (appendix C) one per student
... cost a little more than reflectors, but much less than a refractor of the same aperture size. These telescopes are popular in 8 and 10-inch apertures, and can be found as large as 14 inches. Many of the newer models have built-in computers that can locate objects by entering their coordinates onto a ...
... cost a little more than reflectors, but much less than a refractor of the same aperture size. These telescopes are popular in 8 and 10-inch apertures, and can be found as large as 14 inches. Many of the newer models have built-in computers that can locate objects by entering their coordinates onto a ...
The Revolution in Telescope Aperture
... would be the second-largest telescope in the world - the Kitt Peak 4-m telescope (KPNO). Its twin would be placed in the Chilean Andes at the Cerro Tololo Inter-American Observatory11. Despite the time interval, the design of the Kitt Peak 4-m telescope was tied to concepts developed for the Palomar ...
... would be the second-largest telescope in the world - the Kitt Peak 4-m telescope (KPNO). Its twin would be placed in the Chilean Andes at the Cerro Tololo Inter-American Observatory11. Despite the time interval, the design of the Kitt Peak 4-m telescope was tied to concepts developed for the Palomar ...
AOS_technical_4-24-07
... Pickoff Mirrors &Telescopes- new suspensions using existing technology, telescopes similar to initial LIGO IAS- same as initial LIGO OpLev- same as initial LIGO, with position-insensitive receiver ...
... Pickoff Mirrors &Telescopes- new suspensions using existing technology, telescopes similar to initial LIGO IAS- same as initial LIGO OpLev- same as initial LIGO, with position-insensitive receiver ...
DAS FOCUS Newsletter_MARCH_2015
... hasn’t changed and you’ll have seen a post or two for some observing plans on the DAS Yahoo Group. It’s hard for me to accept that it’s been over 4 months since I had my 18” scope out for observing. The Trap Pond State Park session with the Delmarva Stargazers on October 25 was my last time out. Spo ...
... hasn’t changed and you’ll have seen a post or two for some observing plans on the DAS Yahoo Group. It’s hard for me to accept that it’s been over 4 months since I had my 18” scope out for observing. The Trap Pond State Park session with the Delmarva Stargazers on October 25 was my last time out. Spo ...
Telescope Optics Myths
... back to the standard SCT configuration for narrow-field, high-resolution imaging. Collimation is still required but tends to be fairly simple. And what about image quality? All the systems give very high-quality images over flat fields. HyperStar provides the most speed plus star images comparable t ...
... back to the standard SCT configuration for narrow-field, high-resolution imaging. Collimation is still required but tends to be fairly simple. And what about image quality? All the systems give very high-quality images over flat fields. HyperStar provides the most speed plus star images comparable t ...
October 2011 - Newbury Astronomical Society
... accreted early in the history of the solar system. The mission will characterize the early solar system and the processes that dominated its formation. The asteroid Vesta and the recently categorized dwarf planet Ceres have been selected because both are thought to retain evidence of the conditions ...
... accreted early in the history of the solar system. The mission will characterize the early solar system and the processes that dominated its formation. The asteroid Vesta and the recently categorized dwarf planet Ceres have been selected because both are thought to retain evidence of the conditions ...
Choosing your first telescope - Caribbean Institute of Astronomy
... with telescopes. If you are not sure that astronomy is the hobby for you, a pair of binoculars will allow you to ‘test drive’ the hobby without any serious investment. The most popular all purpose binoculars for astronomy are 7x50 or 10x50 binoculars (the first number refers to the magnification of ...
... with telescopes. If you are not sure that astronomy is the hobby for you, a pair of binoculars will allow you to ‘test drive’ the hobby without any serious investment. The most popular all purpose binoculars for astronomy are 7x50 or 10x50 binoculars (the first number refers to the magnification of ...
Developments for coating, testing, and aligning Cherenkov
... tilting movement; the second one is equipped with a pivot, allowing free rotation along a tilting angle. The motor of each actuator is housed in a watertight box vented by a sintered bronze valve. The actuator step length is now 5 µ m and the total excursion range is ∼ 45 mm. Furthermore, as in the ...
... tilting movement; the second one is equipped with a pivot, allowing free rotation along a tilting angle. The motor of each actuator is housed in a watertight box vented by a sintered bronze valve. The actuator step length is now 5 µ m and the total excursion range is ∼ 45 mm. Furthermore, as in the ...
Flatfielding chapter for Calibration Volumes
... We can expect each chip to have slightly different overall quantum efficiency due to variations in the manufacturing process, especially if devices are taken from different lots. As a star moves from one detector of a given sort to another, its observed magnitude will therefore jump by some small am ...
... We can expect each chip to have slightly different overall quantum efficiency due to variations in the manufacturing process, especially if devices are taken from different lots. As a star moves from one detector of a given sort to another, its observed magnitude will therefore jump by some small am ...
Ion Thrusters
... An ion thruster is a type of electric propulsion used to for spacecraft propulsion. They are well known for little propellant, comparatively to other forms of propulsion, and thus can travel great distances. Ion thrusters, and other electric propulsions, are also easier to launch. The reason is bec ...
... An ion thruster is a type of electric propulsion used to for spacecraft propulsion. They are well known for little propellant, comparatively to other forms of propulsion, and thus can travel great distances. Ion thrusters, and other electric propulsions, are also easier to launch. The reason is bec ...
Galaxies - Wallkill Valley Regional High School
... - A flat, rotating disc of mainly young (blue) stars and interstellar matter - A central “bulge” of mainly older (red) stars - A spherical “halo” of stars, including many in globular clusters - A super-massive black hole at the center of the central bulge ...
... - A flat, rotating disc of mainly young (blue) stars and interstellar matter - A central “bulge” of mainly older (red) stars - A spherical “halo” of stars, including many in globular clusters - A super-massive black hole at the center of the central bulge ...
An optical/UV space coronagraph concept for the terrestrial planet finder
... either L2 or Earth-trailing, and be launched on a Delta IV H launch vehicle. While cryogenic operation is not required for a visible light telescope, thermal stability is of critical importance. Thermally induced distortions in the optics produce wavefront errors that can devastate performance, part ...
... either L2 or Earth-trailing, and be launched on a Delta IV H launch vehicle. While cryogenic operation is not required for a visible light telescope, thermal stability is of critical importance. Thermally induced distortions in the optics produce wavefront errors that can devastate performance, part ...
Manufacture of mirror glass substrates for the NuSTAR mission
... constructed and fitted. The HEPA units of the clean tents are fitted with cooling coils that chilled water flows through to cool the inside of the clean tents when necessary. The chilled water flow rate is controlled by a manual valve that can be turned to the appropriate setting determined by the n ...
... constructed and fitted. The HEPA units of the clean tents are fitted with cooling coils that chilled water flows through to cool the inside of the clean tents when necessary. The chilled water flow rate is controlled by a manual valve that can be turned to the appropriate setting determined by the n ...
XMM-Newton
The XMM-Newton, also known as the X-ray Multi-Mirror Mission and the High Throughput X-ray Spectroscopy Mission, is an orbiting X-ray observatory launched by ESA in December 1999 on an Ariane 5 rocket. It is named in honor of Sir Isaac Newton. The telescope was placed in a very eccentric 48 hour elliptical orbit at 40°; at its apogee it is nearly 114,000 kilometres (71,000 mi) from Earth, while the perigee is only 7,000 kilometres (4,300 mi).