File - INFN-LNF
... and energy from the sun to the Earth. CME blast and subsequent impact at Earth This illustration shows a CME blasting off the Sun's surface in the direction of Earth. Two to four days later, the CME cloud is shown striking and beginning to be mostly deflected around the Earth's magnetosphere. The bl ...
... and energy from the sun to the Earth. CME blast and subsequent impact at Earth This illustration shows a CME blasting off the Sun's surface in the direction of Earth. Two to four days later, the CME cloud is shown striking and beginning to be mostly deflected around the Earth's magnetosphere. The bl ...
StarSense AutoAlign Manual
... complete, the number of stars found will be displayed. If no stars are found, a message “Too Few Stars” will display and StarSense will move the telescope to another region of sky. Once StarSense has begun its alignment process, it is important not to touch or move the telescope in any way. Also, wh ...
... complete, the number of stars found will be displayed. If no stars are found, a message “Too Few Stars” will display and StarSense will move the telescope to another region of sky. Once StarSense has begun its alignment process, it is important not to touch or move the telescope in any way. Also, wh ...
Image Formation in the Eye and the Telescope
... It is definitely the simplest type of mounting, particularly the Dobsonian1 variation. Unfortunately, since stars appear to move across the sky in arcs which are not parallel to the horizon, they change from moment to moment in both altitude and azimuth. Therefore it is necessary to rotate the teles ...
... It is definitely the simplest type of mounting, particularly the Dobsonian1 variation. Unfortunately, since stars appear to move across the sky in arcs which are not parallel to the horizon, they change from moment to moment in both altitude and azimuth. Therefore it is necessary to rotate the teles ...
Fulltext PDF
... that if a cloud was cold and dense enough, then the gravitational force would dominate, leading to the gravitational collapse of the cloud (Figure 4). As the cloud collapses, it breaks into fragments in a hierarchical fashion, until the fragments are close to stellar mass. ‘Jeans mass’ (M J ) is the ...
... that if a cloud was cold and dense enough, then the gravitational force would dominate, leading to the gravitational collapse of the cloud (Figure 4). As the cloud collapses, it breaks into fragments in a hierarchical fashion, until the fragments are close to stellar mass. ‘Jeans mass’ (M J ) is the ...
spie_poster1 - UMD Physics
... resolution for a 1 arcsec slit is about 40,000. The maximum resolution that can be attained with still adequate sampling, using a narrow slit, is about 110,000 in the red and 80,000 in the blue. The dioptric cameras offer fields with a diameter of 43.5 mm (blue) and 87 mm (red) and have external foc ...
... resolution for a 1 arcsec slit is about 40,000. The maximum resolution that can be attained with still adequate sampling, using a narrow slit, is about 110,000 in the red and 80,000 in the blue. The dioptric cameras offer fields with a diameter of 43.5 mm (blue) and 87 mm (red) and have external foc ...
Extreme Optics and the Search for Earth-Like Planets
... the extremely high contrast needed to image planets around nearby stars. We have a close-up view of only one star, our Sun. As we all known this particular star has circling it a wealth of smaller objects such as planets, comets, and asteroids. And one of those planets is Earth, our home. All other ...
... the extremely high contrast needed to image planets around nearby stars. We have a close-up view of only one star, our Sun. As we all known this particular star has circling it a wealth of smaller objects such as planets, comets, and asteroids. And one of those planets is Earth, our home. All other ...
Considerations about LIRIS MOS observations
... and 3 nod points, respectively. These numbers apply for good seeing conditions, otherwise the sky subtraction will be compromised if very short slit-lets are required. Minimum slit-let separation: There should be a minimum gap between slit-lets which are adjacent along the long side (spatial directi ...
... and 3 nod points, respectively. These numbers apply for good seeing conditions, otherwise the sky subtraction will be compromised if very short slit-lets are required. Minimum slit-let separation: There should be a minimum gap between slit-lets which are adjacent along the long side (spatial directi ...
Measuring Starlight Deflection during the 2017 Eclipse: Repeating
... view is only about 0.4 arcsec, but appear on a flatter background. Since the FLI Microline camera downloads images in less than one second and no mechanical shutter is required, the plan is to take as many images as possible with both exposure durations. 2.5 Zenith sky brightness During the partial ...
... view is only about 0.4 arcsec, but appear on a flatter background. Since the FLI Microline camera downloads images in less than one second and no mechanical shutter is required, the plan is to take as many images as possible with both exposure durations. 2.5 Zenith sky brightness During the partial ...
Mapping the Milky Way: William Herschel`s Star-‐Gages
... The left part of Figure 6 shows the 3D view of the star system. This system is just like the previous one except the stars are highly concentrated near the center of the disk. The plot o ...
... The left part of Figure 6 shows the 3D view of the star system. This system is just like the previous one except the stars are highly concentrated near the center of the disk. The plot o ...
Could We Divert a Threatening Asteroid?
... Jupiter, a reservoir of millions of rocky and metallic minor planets. Others may be the burnt-out nuclei of comets that wandered in from the outer solar system. These near-Earth objects (NEOs) interest astronomers as fossil building blocks of planet formation, but they concern everyone because they ...
... Jupiter, a reservoir of millions of rocky and metallic minor planets. Others may be the burnt-out nuclei of comets that wandered in from the outer solar system. These near-Earth objects (NEOs) interest astronomers as fossil building blocks of planet formation, but they concern everyone because they ...
User Guide
... If you have never owned a telescope before, we would like to welcome you to amateur astronomy. Take some time to familiarize yourself with the night sky. Learn to recognize the patterns of stars in the major constellations. With a little practice, a little patience, and a reasonably dark sky away fr ...
... If you have never owned a telescope before, we would like to welcome you to amateur astronomy. Take some time to familiarize yourself with the night sky. Learn to recognize the patterns of stars in the major constellations. With a little practice, a little patience, and a reasonably dark sky away fr ...
“Astronomy Picture of the Day” Leads to a Research Breakthrough
... looking mostly unchanged. The first group to go treasure hunting for ex-companions was led by Pilar Ruiz-Lapuente, who looked at the Tycho supernova remnant in our galaxy. They found a subgiant star near the center that appears to show signs of being the ex-companion, but unfortunately, the observat ...
... looking mostly unchanged. The first group to go treasure hunting for ex-companions was led by Pilar Ruiz-Lapuente, who looked at the Tycho supernova remnant in our galaxy. They found a subgiant star near the center that appears to show signs of being the ex-companion, but unfortunately, the observat ...
by Kendrick Frazier Pluto turns out not to be responsible for
... he began his account, "I perceived one that appeared visibly larger than the rest." Because it had a measurable diameter, it could not be a star. H e continued his observations over the next several nights and observed definite motion. He thought his discovery was a comet, but within two months othe ...
... he began his account, "I perceived one that appeared visibly larger than the rest." Because it had a measurable diameter, it could not be a star. H e continued his observations over the next several nights and observed definite motion. He thought his discovery was a comet, but within two months othe ...
A History of Astronomy, Astrophysics and Cosmology
... bodies were made. This was the background against which the Ptolemaic geocentric system of the world was constructed. According to the Ptolemaic picture, the Earth is stationary at the centre of the Universe and the principal orbits of the other celestial objects are circles, or spheres, in the orde ...
... bodies were made. This was the background against which the Ptolemaic geocentric system of the world was constructed. According to the Ptolemaic picture, the Earth is stationary at the centre of the Universe and the principal orbits of the other celestial objects are circles, or spheres, in the orde ...
A STEP - Observatoire de la Côte d`Azur
... know of more than ~200 planets or planetary systems orbiting solar type stars in our neighbourhood. The discovery of more planets, smaller planets and the ability to characterize them directly impacts our ability to understand how planets form, how the Solar System formed, and to better prepare futu ...
... know of more than ~200 planets or planetary systems orbiting solar type stars in our neighbourhood. The discovery of more planets, smaller planets and the ability to characterize them directly impacts our ability to understand how planets form, how the Solar System formed, and to better prepare futu ...
Tip-tilt mirror and sensor configuration
... optics techniques. The upper image is a reproduction of ESO Press Photo eso0719, with the guide stars used for the MCAO correction identified with a cross. A box shows a 14 arcsec area that is then observed while applying different or no AO corrections, as shown in the bottom images. From left to ri ...
... optics techniques. The upper image is a reproduction of ESO Press Photo eso0719, with the guide stars used for the MCAO correction identified with a cross. A box shows a 14 arcsec area that is then observed while applying different or no AO corrections, as shown in the bottom images. From left to ri ...
Presentazione di PowerPoint
... Diameter ~ 50'', vel. dispersion ~100 km s-1, (assuming a Hubble flow) rate dispersion~2 km s-1 arcsec-1 ...
... Diameter ~ 50'', vel. dispersion ~100 km s-1, (assuming a Hubble flow) rate dispersion~2 km s-1 arcsec-1 ...
Micki s report in MS Word format.
... CCD will continually take a set of images and then wait for a specific interval time. The inner “for” loop causes the camera to take images back-to-back for stacking; these images are then saved to a file called “Polaris” on the computer’s hard drive, with the name “P”+ the Julian Date. In this code ...
... CCD will continually take a set of images and then wait for a specific interval time. The inner “for” loop causes the camera to take images back-to-back for stacking; these images are then saved to a file called “Polaris” on the computer’s hard drive, with the name “P”+ the Julian Date. In this code ...
PLANETS
... star HD 209458 was shown to indicate the presence of a large exoplanet in transit across its surface from the perspective of Earth (1.7% dimming). Subsequent spectroscopic studies with the Hubble Space Telescope have even indicated that the exoplanet's atmosphere must have sodium vapor in it. The pl ...
... star HD 209458 was shown to indicate the presence of a large exoplanet in transit across its surface from the perspective of Earth (1.7% dimming). Subsequent spectroscopic studies with the Hubble Space Telescope have even indicated that the exoplanet's atmosphere must have sodium vapor in it. The pl ...
How Marius Was Right and Galileo Was Wrong Even Though
... Based on this hypothesis, the number of stars N* within a distance L of Earth would be expected to increase as L3. Galileo thought he was seeing the physical bodies of stars with his telescope, and so thought stars' apparent sizes relative to the apparent size of the sun indicated their distances: ...
... Based on this hypothesis, the number of stars N* within a distance L of Earth would be expected to increase as L3. Galileo thought he was seeing the physical bodies of stars with his telescope, and so thought stars' apparent sizes relative to the apparent size of the sun indicated their distances: ...
Current Status of the Hobby-Eberly Telescope Wide Field
... the field area is in the outer field, and also for the following reason: the segmented primary mirror of the HET is not phased, and so the diffraction-based performance of the HET is determined by its 1 m diameter primary mirror segments; therefore the on-axis performance of the baseline design need ...
... the field area is in the outer field, and also for the following reason: the segmented primary mirror of the HET is not phased, and so the diffraction-based performance of the HET is determined by its 1 m diameter primary mirror segments; therefore the on-axis performance of the baseline design need ...
chris - ESA Earth Online
... CHRIS has two main mission objectives. First, the mission is being used as a technology demonstrator to evaluate the performance of the compact design form. Experience gained from development and operation of CHRIS will feed into the design decisions of hyperspectral systems for future small satelli ...
... CHRIS has two main mission objectives. First, the mission is being used as a technology demonstrator to evaluate the performance of the compact design form. Experience gained from development and operation of CHRIS will feed into the design decisions of hyperspectral systems for future small satelli ...
Lives of the Stars Lecture 5: Star birth
... forming both low- and high-mass stars. The conditions for a young star forming in Orion must be very different for a star forming in the relative quiet of Taurus-Auriga. As soon as massive stars form, you get intense radiation, powerful winds, and supernova explosions. The hot stars reshape their ow ...
... forming both low- and high-mass stars. The conditions for a young star forming in Orion must be very different for a star forming in the relative quiet of Taurus-Auriga. As soon as massive stars form, you get intense radiation, powerful winds, and supernova explosions. The hot stars reshape their ow ...
Kepler`s Search for Exoplanets
... March 6, 2009. Cape Canaveral Florida. On top of this Delta II rocket is cradled the Kepler Space Telescope. For the Ball Aerospace engineers and Kepler Mission scientists, the nighttime launch was exhilarating but scary. Years of planning and the Mission could have ended right then with the failure ...
... March 6, 2009. Cape Canaveral Florida. On top of this Delta II rocket is cradled the Kepler Space Telescope. For the Ball Aerospace engineers and Kepler Mission scientists, the nighttime launch was exhilarating but scary. Years of planning and the Mission could have ended right then with the failure ...
Lecture 1 - Simon P Driver
... – Object therefore overhead on 1st Feb at half past midnight • Rises 3.6hrs earlier = 8.9pm or 8:54pm • Sets 3.6hrs later = 4.1am or 4:06am ...
... – Object therefore overhead on 1st Feb at half past midnight • Rises 3.6hrs earlier = 8.9pm or 8:54pm • Sets 3.6hrs later = 4.1am or 4:06am ...
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.