Introduction to Adaptive Optics
... • One image taken every 0.843 seconds - 4700 images total. • Titan's atmosphere refracts the starlight, forming multiple images of each star! • Result: winds in Titan's stratosphere are very strong: ~250 m/s in a jet-stream type pattern. ...
... • One image taken every 0.843 seconds - 4700 images total. • Titan's atmosphere refracts the starlight, forming multiple images of each star! • Result: winds in Titan's stratosphere are very strong: ~250 m/s in a jet-stream type pattern. ...
telestar instruction manual
... even billions of stars. Some galaxies form a spiral (like our galaxy, the Milky Way) and other galaxies look more like a large football and are called elliptical galaxies. There are many galaxies that are irregularly shaped and are thought to have been pulled apart because they passed too close to—o ...
... even billions of stars. Some galaxies form a spiral (like our galaxy, the Milky Way) and other galaxies look more like a large football and are called elliptical galaxies. There are many galaxies that are irregularly shaped and are thought to have been pulled apart because they passed too close to—o ...
Celestial Coordinate System
... both through calculation and observation, and applying this system of time to locating stars and other objects using the celestial coordinate system. Introduction Early in the history of astronomy it became necessary to devise a system for describing the positions of the stars on the celestial spher ...
... both through calculation and observation, and applying this system of time to locating stars and other objects using the celestial coordinate system. Introduction Early in the history of astronomy it became necessary to devise a system for describing the positions of the stars on the celestial spher ...
Introduction to Astronomy
... Mass: 1012 solar masses Center: Direction: α = 17.8h, δ = -29° (Sagittarius) Distance: 29,000 lt. yrs. Diameter: 326,000 lt. yrs. Velocity: 370 miles/sec relative to 3°K background radiation toward α = 10h, δ = -20° (southeast Hydra) ...
... Mass: 1012 solar masses Center: Direction: α = 17.8h, δ = -29° (Sagittarius) Distance: 29,000 lt. yrs. Diameter: 326,000 lt. yrs. Velocity: 370 miles/sec relative to 3°K background radiation toward α = 10h, δ = -20° (southeast Hydra) ...
SWFAS August 16 Newsletter - Southwest Florida Astronomical
... instruments were turned off during the crucial engine burn. Juno resumed full transmissions to Earth 58 minutes after the thruster lit up, indicating all is well with the spacecraft. At 5.8 astronomical units (a.u.) or 869 million km from Earth, Juno is currently more than 48 light-minutes away, wit ...
... instruments were turned off during the crucial engine burn. Juno resumed full transmissions to Earth 58 minutes after the thruster lit up, indicating all is well with the spacecraft. At 5.8 astronomical units (a.u.) or 869 million km from Earth, Juno is currently more than 48 light-minutes away, wit ...
AN OPTICAL INFRARED ASTROMETRIC - Cosmos
... 2:2m the same optical design as for V-band requires 0.12 arcsec/pixel in the scanning direction, whereas 6 arcsec/pixel in Z-axis direction. Assuming the same eld of view 0:1 0:1 and physical dimension of 36 mm36 mm as before, one pixel size is 12m 600m and the total number of pixels per ...
... 2:2m the same optical design as for V-band requires 0.12 arcsec/pixel in the scanning direction, whereas 6 arcsec/pixel in Z-axis direction. Assuming the same eld of view 0:1 0:1 and physical dimension of 36 mm36 mm as before, one pixel size is 12m 600m and the total number of pixels per ...
Milky Way I
... The Milky Way – Review Vital Stats • Consists of 100 billion stars. • Stars are distributed in a central bulge, a huge disk, and a galactic halo surrounding both. • The diameter of the disk is 30kpc (100,000 light years). • The thickness of the disk is only 300pc (1000 light years) on average. • Th ...
... The Milky Way – Review Vital Stats • Consists of 100 billion stars. • Stars are distributed in a central bulge, a huge disk, and a galactic halo surrounding both. • The diameter of the disk is 30kpc (100,000 light years). • The thickness of the disk is only 300pc (1000 light years) on average. • Th ...
The Ring Nebula, NGC 6720
... that is a favorite of both amateur and professional astronomers alike. Located in the constellation Lyra (the lyre, or harp), the nebula is situated within the famous Summer Triangle of bright stars (Vega, Altair, and Deneb) for northern hemisphere observers. At a distance of 2,300 light-years, and ...
... that is a favorite of both amateur and professional astronomers alike. Located in the constellation Lyra (the lyre, or harp), the nebula is situated within the famous Summer Triangle of bright stars (Vega, Altair, and Deneb) for northern hemisphere observers. At a distance of 2,300 light-years, and ...
Infrared Instrumentation & Observing Techniques
... The two episodes of radio activity and the two episodes of star formation are due to non-steady transport of gas in the disk. If the young radio source and the young starburst (knots 1,3) are related by the same mass transport event, the gas must be transported from the hundreds of pc scale to the ...
... The two episodes of radio activity and the two episodes of star formation are due to non-steady transport of gas in the disk. If the young radio source and the young starburst (knots 1,3) are related by the same mass transport event, the gas must be transported from the hundreds of pc scale to the ...
The Interstellar Medium (ch. 18) Interstellar Dust Grains
... sun can look red at sunset or sunrise—the earth’s atmosphere contains lots of “droplets” or “aerosol” particles that behave like dust grains. Infrared dust emission. Dust can also be observed by its infrared (and submillimeter) wavelength emission (don’t confuse this with “reddening”!). Dust grains ...
... sun can look red at sunset or sunrise—the earth’s atmosphere contains lots of “droplets” or “aerosol” particles that behave like dust grains. Infrared dust emission. Dust can also be observed by its infrared (and submillimeter) wavelength emission (don’t confuse this with “reddening”!). Dust grains ...
Chapter 11: Space Technology
... reflecting telescope was shaped, a mistake was made. As a result, images obtained by the telescope were not as clear as expected. In December 1993, a team of astronauts repaired the Hubble Space Telescope by installing a set of small mirrors designed to correct images obtained by the faulty mirror. ...
... reflecting telescope was shaped, a mistake was made. As a result, images obtained by the telescope were not as clear as expected. In December 1993, a team of astronauts repaired the Hubble Space Telescope by installing a set of small mirrors designed to correct images obtained by the faulty mirror. ...
strolympics - Chandra X
... acceleration caused by gravity. On the Earth’s surface, there’s a consistent tug from gravity. However, if you venture to other planets where gravitational forces are different or into space itself where gravity is virtually non-existent, then that object’s weight will change. Mass, however, does no ...
... acceleration caused by gravity. On the Earth’s surface, there’s a consistent tug from gravity. However, if you venture to other planets where gravitational forces are different or into space itself where gravity is virtually non-existent, then that object’s weight will change. Mass, however, does no ...
TMT Scientific Information Brochure
... in Kuiper Belt research. These outer reaches contain a vast swarm of small icy bodies that preserve details of the formation of the Solar System and the materials out of which the planets formed. The composition of these bodies is best determined through observations in the near-infrared (1-2.5 µm) ...
... in Kuiper Belt research. These outer reaches contain a vast swarm of small icy bodies that preserve details of the formation of the Solar System and the materials out of which the planets formed. The composition of these bodies is best determined through observations in the near-infrared (1-2.5 µm) ...
A rocky planet transiting a nearby low-mass star
... contribution from scatter would be smaller than the uncertainty propagated from the stellar mass. Bolometric luminosity of the star We combine the parallax and photometry with bolometric corrections to determine the total luminosity of GJ 1132, testing three different relations to estimate bolometri ...
... contribution from scatter would be smaller than the uncertainty propagated from the stellar mass. Bolometric luminosity of the star We combine the parallax and photometry with bolometric corrections to determine the total luminosity of GJ 1132, testing three different relations to estimate bolometri ...
Astronomy - Career Account Web Pages
... The Universe's Most Ancient Object The farthest and one of the very earliest galaxies ever seen in the universe appears as a faint red blob in this ultra-deep–field exposure taken with NASA's Hubble Space Telescope. This is the deepest infrared image taken of the universe. Based on the object's colo ...
... The Universe's Most Ancient Object The farthest and one of the very earliest galaxies ever seen in the universe appears as a faint red blob in this ultra-deep–field exposure taken with NASA's Hubble Space Telescope. This is the deepest infrared image taken of the universe. Based on the object's colo ...
Chapter 14: Exploring Space
... Light from the Past When you look at a star, the light that you see left the star many years ago. Although light travels fast, distances between objects in space are so great that it sometimes takes millions of years for the light to reach Earth. The light and other energy leaving a star are forms o ...
... Light from the Past When you look at a star, the light that you see left the star many years ago. Although light travels fast, distances between objects in space are so great that it sometimes takes millions of years for the light to reach Earth. The light and other energy leaving a star are forms o ...
SM_Taurus - Cloudy Nights
... and high contrast. When embarked on your own investigation into the Pleiades nebulosity use low powers. Pay careful attention to the area around Merope - where the brightest swatch of nebula resides (the Merope Nebula). On a good night you may see nebulosity throughout the cluster. Be aware that a s ...
... and high contrast. When embarked on your own investigation into the Pleiades nebulosity use low powers. Pay careful attention to the area around Merope - where the brightest swatch of nebula resides (the Merope Nebula). On a good night you may see nebulosity throughout the cluster. Be aware that a s ...
Small Wonders: Taurus
... and high contrast. When embarked on your own investigation into the Pleiades nebulosity use low powers. Pay careful attention to the area around Merope - where the brightest swatch of nebula resides (the Merope Nebula). On a good night you may see nebulosity throughout the cluster. Be aware that a s ...
... and high contrast. When embarked on your own investigation into the Pleiades nebulosity use low powers. Pay careful attention to the area around Merope - where the brightest swatch of nebula resides (the Merope Nebula). On a good night you may see nebulosity throughout the cluster. Be aware that a s ...
Lightweight optical telescope structures built from plastic
... five times greater than that of steel, the Young’s modulus similar, and the density much lower. Thus, stiff, lightweight structures are possible. In addition, the coefficient of thermal expansion for CFRP is very low at 1–2ppm, roughly 20 times lower than for aluminum. For this reason, CFRP structur ...
... five times greater than that of steel, the Young’s modulus similar, and the density much lower. Thus, stiff, lightweight structures are possible. In addition, the coefficient of thermal expansion for CFRP is very low at 1–2ppm, roughly 20 times lower than for aluminum. For this reason, CFRP structur ...
The SPEED Project - European Southern Observatory
... Detection (SPEED) testbench. This is an advanced facility in development at the Lagrange Laboratory that will address several of the most critical issues affecting high-contrast imaging for the next generation of optical/near-infrared telescopes. The SPEED testbed can be used to investigate practica ...
... Detection (SPEED) testbench. This is an advanced facility in development at the Lagrange Laboratory that will address several of the most critical issues affecting high-contrast imaging for the next generation of optical/near-infrared telescopes. The SPEED testbed can be used to investigate practica ...
Radiation From Space
... • Using special telescopes, scientists hoped to see evidence of water vapor thrown up by the collision. ...
... • Using special telescopes, scientists hoped to see evidence of water vapor thrown up by the collision. ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.