Bez tytułu slajdu
... RX J1856 in Optical Light This optical image of RX J1856.5-3754 portrays a crowded region of star formation. In comparison, the Chandra X-ray image shows that RX J1856 outshines all of the other sources in the field, indicating it is both extremely hot and very small. ...
... RX J1856 in Optical Light This optical image of RX J1856.5-3754 portrays a crowded region of star formation. In comparison, the Chandra X-ray image shows that RX J1856 outshines all of the other sources in the field, indicating it is both extremely hot and very small. ...
Cosmic Times 1955, 65 PPT
... Unchanging situations need not be static New matter can be created spontaneously as the universe expands (a few hundred atoms per year per galaxy) Expansion of universe and creation of new matter balanced via a negative energy. The universe is constant in its overall density ...
... Unchanging situations need not be static New matter can be created spontaneously as the universe expands (a few hundred atoms per year per galaxy) Expansion of universe and creation of new matter balanced via a negative energy. The universe is constant in its overall density ...
image - Carlson Center for Imaging Science
... 2. OBJECT: person, flower, car 3. COLLECTION: lens, mirror 4. DETECTION: film, CCD 5. STORAGE: film, computer file 6. OUTPUT: printout, monitor ...
... 2. OBJECT: person, flower, car 3. COLLECTION: lens, mirror 4. DETECTION: film, CCD 5. STORAGE: film, computer file 6. OUTPUT: printout, monitor ...
slides - Caltech Astronomy
... From two sets of similar right triangles, both sets including either y2 or y1 as one side, y2 / y1 = s2 / s1' = ( s1' - d ) / s1' = s2' / f ' where f ' is the effective focal length of the whole system, and, the net power is P = 1 / f ' . We can find the effective focal length by setting s1 = ∞ and s ...
... From two sets of similar right triangles, both sets including either y2 or y1 as one side, y2 / y1 = s2 / s1' = ( s1' - d ) / s1' = s2' / f ' where f ' is the effective focal length of the whole system, and, the net power is P = 1 / f ' . We can find the effective focal length by setting s1 = ∞ and s ...
Click here to get the file
... and sends a KEYWORD as a string When given a request that matches a PDP KEYWORD, the PDP server sends back a string of data elements joined with the "|" character. PDP server disconnects after one second. Any program that needs information from another program can be set up as a PDP CLIENT. ...
... and sends a KEYWORD as a string When given a request that matches a PDP KEYWORD, the PDP server sends back a string of data elements joined with the "|" character. PDP server disconnects after one second. Any program that needs information from another program can be set up as a PDP CLIENT. ...
Optical and infrared astronomical telescopes and instruments (L16)
... Astronomy is an observational science. Our understanding of the universe beyond the Earth comes mostly from interpreting the electromagnetic radiation we see coming from the sky. This course is about the equipment and techniques that we use to collect and measure the optical and near infra-red compo ...
... Astronomy is an observational science. Our understanding of the universe beyond the Earth comes mostly from interpreting the electromagnetic radiation we see coming from the sky. This course is about the equipment and techniques that we use to collect and measure the optical and near infra-red compo ...
The Gravitational Assist
... down) and allows leaving our Solar System (see Figure 4). The GA helps to determine masses of planets and moons—the trajectory of Voyager 2 showed that Uranus is about 0.25 % more massive than expected. The telemetry confirmed that behind Neptune is no “Planet X ”—if there was such a massive planet, ...
... down) and allows leaving our Solar System (see Figure 4). The GA helps to determine masses of planets and moons—the trajectory of Voyager 2 showed that Uranus is about 0.25 % more massive than expected. The telemetry confirmed that behind Neptune is no “Planet X ”—if there was such a massive planet, ...
Chapter 6 Telescopes: Portals of Discovery How does your eye form
... Digital cameras detect light with charge-coupled devices (CCDs) ...
... Digital cameras detect light with charge-coupled devices (CCDs) ...
光學望遠鏡
... visible-light observations of faint objects. New space instruments under development are expected to directly observe planets around other stars, perhaps even some Earth-like worlds. In addition to telescopes, astronomers have begun using other instruments to make observations. ...
... visible-light observations of faint objects. New space instruments under development are expected to directly observe planets around other stars, perhaps even some Earth-like worlds. In addition to telescopes, astronomers have begun using other instruments to make observations. ...
Ay122a Final Exam – Fall 2012
... the telescope focal plane would you place a reflecting collimator? c) You would like to have a final plate scale at the detector of 0.25 arc seconds per 15 micron detector pixel. What is the focal ratio of the spectrograph camera to achieve this? d) Approximately what spectral resolution would you e ...
... the telescope focal plane would you place a reflecting collimator? c) You would like to have a final plate scale at the detector of 0.25 arc seconds per 15 micron detector pixel. What is the focal ratio of the spectrograph camera to achieve this? d) Approximately what spectral resolution would you e ...
2012 Cave Astrola Telescope Restoration
... mirror was first to be aligned and centered in the focuser. My partner tightened and loosened the screws on the end of the telescope that allowed for movement in the mirror; meanwhile I looked through the eyepiece and tried to determine if she was turning the right or wrong way. The difficulty with ...
... mirror was first to be aligned and centered in the focuser. My partner tightened and loosened the screws on the end of the telescope that allowed for movement in the mirror; meanwhile I looked through the eyepiece and tried to determine if she was turning the right or wrong way. The difficulty with ...
Spherical mirror defects
... essential for maximum light gathering power. With a spherical mirror and with a wide incident beam, the light is not focused to one point but forms a pattern, the envelope of which is called a caustic curve (see earlier). There are three solutions:(a) use a parabolic mirror (See: Optics/Reflection/P ...
... essential for maximum light gathering power. With a spherical mirror and with a wide incident beam, the light is not focused to one point but forms a pattern, the envelope of which is called a caustic curve (see earlier). There are three solutions:(a) use a parabolic mirror (See: Optics/Reflection/P ...
January 2012 - John J. McCarthy Observatory
... cargo carrying spacecraft will be carried into low-Earth orbit by the company’s Taurus II rocket (recently renamed Antares) from its launch facility on Wallops Island, Virginia. ...
... cargo carrying spacecraft will be carried into low-Earth orbit by the company’s Taurus II rocket (recently renamed Antares) from its launch facility on Wallops Island, Virginia. ...
the spitzer space telescope mission
... passage of infrared light from the telescope into the instrument chamber. For this purpose a removable vacuum window was constructed of gold-film–coated sapphire to allow the cold instruments to perform visible and near-infrared alignment of the CTA optical train on the ground without having to depl ...
... passage of infrared light from the telescope into the instrument chamber. For this purpose a removable vacuum window was constructed of gold-film–coated sapphire to allow the cold instruments to perform visible and near-infrared alignment of the CTA optical train on the ground without having to depl ...
Barger - Chandra X-Ray Observatory (CXC)
... • Deep MIR and radio images are an obvious avenue for searching for highly-obscured AGNs, since extinction in the MIR & radio is small • People have tried to use combined MIR & radio selections, but to obtain a reliable upper limit on the possible population of X-ray undetected, obscured AGNs, a cle ...
... • Deep MIR and radio images are an obvious avenue for searching for highly-obscured AGNs, since extinction in the MIR & radio is small • People have tried to use combined MIR & radio selections, but to obtain a reliable upper limit on the possible population of X-ray undetected, obscured AGNs, a cle ...
vswisher_sigmaxiposter2004
... emission line can be broad due to the Doppler shift: photons will be bluer or redder depending on their direction of motion, resulting in an overall broad line. We care about the Doppler shift because the width of an emission line indicates the speed at which the X-ray emitting plasma is moving. If ...
... emission line can be broad due to the Doppler shift: photons will be bluer or redder depending on their direction of motion, resulting in an overall broad line. We care about the Doppler shift because the width of an emission line indicates the speed at which the X-ray emitting plasma is moving. If ...
GEARS Workshop Monday - Georgia Southern University
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
Mars at arrival
... • First to use telescope for astronomy • Observations supported a Heliocentric solar system • Experiments with gravity, inertia ...
... • First to use telescope for astronomy • Observations supported a Heliocentric solar system • Experiments with gravity, inertia ...
JWST Project Status, AAAC
... – Mirrors - flight mirror blanks made and being machined; EDU being polished; operator error (due to an unexpected feature in the machine) at Axsys drilled hole in one blank, no effect on ...
... – Mirrors - flight mirror blanks made and being machined; EDU being polished; operator error (due to an unexpected feature in the machine) at Axsys drilled hole in one blank, no effect on ...
The Imaging Chain in Optical Astronomy
... deflect light out side of tube 3. Cassegrain: use convex secondary mirror to reflect light back through hole in primary 4. Nasmyth (or Coudé) focus (coudé ⇒ French for “bend” or “elbow”): uses a tertiary mirror to redirect light to external instruments (e.g., a spectrograph) ...
... deflect light out side of tube 3. Cassegrain: use convex secondary mirror to reflect light back through hole in primary 4. Nasmyth (or Coudé) focus (coudé ⇒ French for “bend” or “elbow”): uses a tertiary mirror to redirect light to external instruments (e.g., a spectrograph) ...
Magnetic Fields in Supernova Remnants and Pulsar
... • Pulsar-Wind Nebulae(PWNe): A type nebula is formed by Pulsar-Wind. It often finds in SNR shell. Sometimes also find near old Pulsar star. But it’s SNR has been vanished. • Property: 1. The distance is closer the PWNe center, The brightness is higher. These is not general structure of SNR. 2. The r ...
... • Pulsar-Wind Nebulae(PWNe): A type nebula is formed by Pulsar-Wind. It often finds in SNR shell. Sometimes also find near old Pulsar star. But it’s SNR has been vanished. • Property: 1. The distance is closer the PWNe center, The brightness is higher. These is not general structure of SNR. 2. The r ...
Astronomical observations
... • Imaging: photometry + number of photons as a function of angle • Spectroscopy: number of photons as a function of energy (→ of wavelength λ) • Polarimétry: number of photons as a function of polarisation + Combination of ≠ techniques (ex: spectropolarimetry) ...
... • Imaging: photometry + number of photons as a function of angle • Spectroscopy: number of photons as a function of energy (→ of wavelength λ) • Polarimétry: number of photons as a function of polarisation + Combination of ≠ techniques (ex: spectropolarimetry) ...
telescope
... High-energy astronomy requires specialised telescopes to make observations since most of the particles being observed penetrate right through most metals and glasses. ...
... High-energy astronomy requires specialised telescopes to make observations since most of the particles being observed penetrate right through most metals and glasses. ...
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).