GRIS: The GREGOR Infrared Spectrograph
... duced by the telescope in its daily motion. The image rotator is formed by three mirrors in K-configuration, with incident angles 62◦ , 34◦ , and 62◦ . These large angles produce a significant cross-talk between the Stokes parameters, as shown in Fig. 7, and its accurate calibration will be of great ...
... duced by the telescope in its daily motion. The image rotator is formed by three mirrors in K-configuration, with incident angles 62◦ , 34◦ , and 62◦ . These large angles produce a significant cross-talk between the Stokes parameters, as shown in Fig. 7, and its accurate calibration will be of great ...
DTU 8e Chap 5 Formation of the Solar System
... (a) A planet and its star both orbit around their common center of mass, always staying on opposite sides of that point. The star’s motion around the center of mass provides astronomers with the information that a planet is present. (b) As a planet moves toward or away from us, its star moves in the ...
... (a) A planet and its star both orbit around their common center of mass, always staying on opposite sides of that point. The star’s motion around the center of mass provides astronomers with the information that a planet is present. (b) As a planet moves toward or away from us, its star moves in the ...
Full Poster - Cool Cosmos
... which appears as a bright knot directly below the galaxy's center. Ultraviolet reveals hot, young stars and multiple spiral arms while visible light shows dust lanes along the spiral arms. The infrared images map the light from cooler stars (near-IR) and regions of warm dust (far-IR). Radio shows th ...
... which appears as a bright knot directly below the galaxy's center. Ultraviolet reveals hot, young stars and multiple spiral arms while visible light shows dust lanes along the spiral arms. The infrared images map the light from cooler stars (near-IR) and regions of warm dust (far-IR). Radio shows th ...
The Crab Nebula (M1)
... More than 700 years later, while hunting for comets, Charles Messier spotted an interesting fuzzy object in the same area of the sky as the Chinese guest star. He noted that it was not a star, nor a comet, and placed it on his list of objects that comet hunters should avoid. It became well known to ...
... More than 700 years later, while hunting for comets, Charles Messier spotted an interesting fuzzy object in the same area of the sky as the Chinese guest star. He noted that it was not a star, nor a comet, and placed it on his list of objects that comet hunters should avoid. It became well known to ...
Goals of the day Clickers Order of Magnitude Astronomy
... the Andromeda galaxy (the other big galaxy in the local group). The remnants from such explosions disperse in about 10,000 years. A. The supernova remnant still exists now, and we will watch it disperse over the next 10,000 Earth years. B. In reality, the supernova remnant has already dispersed, b ...
... the Andromeda galaxy (the other big galaxy in the local group). The remnants from such explosions disperse in about 10,000 years. A. The supernova remnant still exists now, and we will watch it disperse over the next 10,000 Earth years. B. In reality, the supernova remnant has already dispersed, b ...
06_Testbank - Lick Observatory
... 2) A radio telescope and an optical telescope of the same size have the same angular resolution. Answer: FALSE 3) The angular resolution of a telescope is never less than its diffraction limit. Answer: TRUE 4) Professional astronomical telescopes generally have a much greater magnification than the ...
... 2) A radio telescope and an optical telescope of the same size have the same angular resolution. Answer: FALSE 3) The angular resolution of a telescope is never less than its diffraction limit. Answer: TRUE 4) Professional astronomical telescopes generally have a much greater magnification than the ...
H-2417, Certifications and Representations For FAA Programs
... From ocean to orbit and everywhere in between, Harris solutions connect, inform and protect the world. Explore our Solutions ...
... From ocean to orbit and everywhere in between, Harris solutions connect, inform and protect the world. Explore our Solutions ...
Unit 44: Astronomy
... of our Solar System and the components within it. The internal structure of the Sun, Earth and Moon will serve to highlight the variation in terms of ‘activity’ which prevail in these objects and demonstrates the differences between stars, planets and moons. The Sun’s effect on all objects in the So ...
... of our Solar System and the components within it. The internal structure of the Sun, Earth and Moon will serve to highlight the variation in terms of ‘activity’ which prevail in these objects and demonstrates the differences between stars, planets and moons. The Sun’s effect on all objects in the So ...
September 2013 - astronomy for beginners
... The chart above shows the summer night sky, looking south, at about 22:00 (10 o’clock BST) around the middle of September. During August the constellations would have been further east (left) and during October they will be further to the west (right). The sky does not get completely dark until quit ...
... The chart above shows the summer night sky, looking south, at about 22:00 (10 o’clock BST) around the middle of September. During August the constellations would have been further east (left) and during October they will be further to the west (right). The sky does not get completely dark until quit ...
Fulltext PDF
... 'Efficiency' refers to the fraction of the mass of a molecular cloud that is actually transformed into stars during the lifetime of the clouds. This quantity is crucial for models of galactic evolution. It is generally quoted to be less than 5%. The star formation rate, for the purpose of galactic e ...
... 'Efficiency' refers to the fraction of the mass of a molecular cloud that is actually transformed into stars during the lifetime of the clouds. This quantity is crucial for models of galactic evolution. It is generally quoted to be less than 5%. The star formation rate, for the purpose of galactic e ...
Looking Back in Time Space Flight to the Stars
... the stars. The next nearest star to Earth after the Sun is actually part of a group of three stars that orbit each other. This group is called the Centauri system (Figure 7.8). It lies about 4.3 ly away from the solar system. If it were possible for you to have a cellphone conversation with someone ...
... the stars. The next nearest star to Earth after the Sun is actually part of a group of three stars that orbit each other. This group is called the Centauri system (Figure 7.8). It lies about 4.3 ly away from the solar system. If it were possible for you to have a cellphone conversation with someone ...
Edwin Hubble
... • “We are assuming that the universe expands uniformly, at a constant rate, and that the recessional velocity (V) is linearly proportional to the distance (r). Hubble's constant (H0), is determined by observational data, and remains unchanged by the values of (V) and (r).” • (helped prove ...
... • “We are assuming that the universe expands uniformly, at a constant rate, and that the recessional velocity (V) is linearly proportional to the distance (r). Hubble's constant (H0), is determined by observational data, and remains unchanged by the values of (V) and (r).” • (helped prove ...
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 ...
structure of the universe practice quiz
... • Our solar system is found in the Milky Way galaxy? ...
... • Our solar system is found in the Milky Way galaxy? ...
Astronomy 103 – Midterm 2 – October 29, 2014
... D The energy source of a protostar, before it has reached the main sequence. a) 1 and B, 2 and D, 3 and C, 4 and A b) 1 and A, 2 and B, 3 and D, 4 and C c) 1 and D, 2 and A, 3 and C, 4 and B d) 1 and C, 2 and B, 3 and A, 4 and D e) 1 and B, 2 and A, 3 and D, 4 and C ...
... D The energy source of a protostar, before it has reached the main sequence. a) 1 and B, 2 and D, 3 and C, 4 and A b) 1 and A, 2 and B, 3 and D, 4 and C c) 1 and D, 2 and A, 3 and C, 4 and B d) 1 and C, 2 and B, 3 and A, 4 and D e) 1 and B, 2 and A, 3 and D, 4 and C ...
2016June StarStuff - Ford Amateur Astronomy Club
... away in the constellation of Cassiopeia, a molecular gas cloud is actively forming stars, including the massive O-class star BD+60 2522, which itself is a magnitude +8.7 star despite its great distance and its presence in a dusty region of space. Shining with a temperature of 37,500 K and a luminosi ...
... away in the constellation of Cassiopeia, a molecular gas cloud is actively forming stars, including the massive O-class star BD+60 2522, which itself is a magnitude +8.7 star despite its great distance and its presence in a dusty region of space. Shining with a temperature of 37,500 K and a luminosi ...
Observations of artificial satellites of Earth and natural satellites of
... 2. Photometric observations of mutual eclipses and occultations of Galilean satellites of Jupiter In 2009 the world campaign for observations of Jupiter satellites was launched. From observation of light curves of satellites during their mutual occultations or eclipses it is possible to determine a ...
... 2. Photometric observations of mutual eclipses and occultations of Galilean satellites of Jupiter In 2009 the world campaign for observations of Jupiter satellites was launched. From observation of light curves of satellites during their mutual occultations or eclipses it is possible to determine a ...
Universe ppt - Killeen ISD
... Moving Galaxies - Astronomers use information about how galaxies are moving as one way to develop ideas about how the universe formed. By examining the visible light spectrum of a galaxy, astronomers can tell how fast the galaxy is moving toward or away from our galaxy (the Milky Way). Only a few of ...
... Moving Galaxies - Astronomers use information about how galaxies are moving as one way to develop ideas about how the universe formed. By examining the visible light spectrum of a galaxy, astronomers can tell how fast the galaxy is moving toward or away from our galaxy (the Milky Way). Only a few of ...
TRANSIT
... 2392. It lies to the east of the nebula and slightly to the north. Quite faint now. Just a blur against the background stars. Just off centre with a triangle of three of about 11th mag stars. The coma makes a fourth star to make this group an oblong. Comet is about a 1/4 of field view northeast of t ...
... 2392. It lies to the east of the nebula and slightly to the north. Quite faint now. Just a blur against the background stars. Just off centre with a triangle of three of about 11th mag stars. The coma makes a fourth star to make this group an oblong. Comet is about a 1/4 of field view northeast of t ...
Word Document - University of Iowa Astrophysics
... This lab exercise does not require a formal writeup. Data taking, drawings, and calculations are to be entered on this form and handed to the teaching assistant. However, you need to preserve your results for later in the semester when you will measure angular sizes of other objects, then use known ...
... This lab exercise does not require a formal writeup. Data taking, drawings, and calculations are to be entered on this form and handed to the teaching assistant. However, you need to preserve your results for later in the semester when you will measure angular sizes of other objects, then use known ...
Characteristic Properties
... Common orbital and rotation direction & plane =>protoplanetary disk Jovian / Terrestrial => range of temperatures in disk / frost line Interplanetary debris left over from formation = asteroids, comets, Common ages => simultaneous formation in disk Collisons of protoplanets = irregularities in Solar ...
... Common orbital and rotation direction & plane =>protoplanetary disk Jovian / Terrestrial => range of temperatures in disk / frost line Interplanetary debris left over from formation = asteroids, comets, Common ages => simultaneous formation in disk Collisons of protoplanets = irregularities in Solar ...
Deep-sky-object hunter
... The telescope held collimation well, except when I disassembled the OTA, but this is common for truss Dobs. Meade includes a battery-powered fan for the primary, which is a great time-saver for cooling the mirror after it has been in a hot car. The truss knobs are captive to their respective parts a ...
... The telescope held collimation well, except when I disassembled the OTA, but this is common for truss Dobs. Meade includes a battery-powered fan for the primary, which is a great time-saver for cooling the mirror after it has been in a hot car. The truss knobs are captive to their respective parts a ...
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.