Interstellar Space
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) All the heavy elements in the Earth were made in stars, then spent time in interst ...
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) All the heavy elements in the Earth were made in stars, then spent time in interst ...
Appendix B-Collimation - Backyard Astronomer`s Guide
... the screws are hidden behind a protective plastic cover that must be pried off or turned to reveal the collimation screws.) The idea is to use these screws to adjust the tilt of the secondary mirror so that it projects the light beam straight down the center of the telescope. On most Schmidt-Cassegr ...
... the screws are hidden behind a protective plastic cover that must be pried off or turned to reveal the collimation screws.) The idea is to use these screws to adjust the tilt of the secondary mirror so that it projects the light beam straight down the center of the telescope. On most Schmidt-Cassegr ...
Interstellar Space Not as Empty as you Might Think
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) ...
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) ...
A Planetary Overview
... closely together looking out from Earth, as they traveled their orbits around the Sun. This had not happened since the time of Napoleon. Starting in 1972, NASA scientists and engineers planned to take advantage of this situation by sending out two space probes to explore these planets. Voyager 1 was ...
... closely together looking out from Earth, as they traveled their orbits around the Sun. This had not happened since the time of Napoleon. Starting in 1972, NASA scientists and engineers planned to take advantage of this situation by sending out two space probes to explore these planets. Voyager 1 was ...
XLII RENCONTRES DE MORIOND WORKSHOP ON …
... Open circles - optical afterglow magnitude at discovery ...
... Open circles - optical afterglow magnitude at discovery ...
Physics of Star Formation: Milky Way and Beyond
... Laura Zschaechner - The Impact on Galactic-Scale Molecular Outflows on Star Formation: ALMA Observations of Circinus and NGC 253 Galactic outflows are poorly understood although they are essential to feedback processes that quench star formation and limit the total mass of large galaxies. Thus, insu ...
... Laura Zschaechner - The Impact on Galactic-Scale Molecular Outflows on Star Formation: ALMA Observations of Circinus and NGC 253 Galactic outflows are poorly understood although they are essential to feedback processes that quench star formation and limit the total mass of large galaxies. Thus, insu ...
INSTRUCTION MANUAL
... The NexStar’s deluxe features combined with Celestron’s legendary optical standards give amateur astronomers one of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may tak ...
... The NexStar’s deluxe features combined with Celestron’s legendary optical standards give amateur astronomers one of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may tak ...
01 DS-114AT manual final.qxd
... A fun way to learn more about astronomy is to join an astronomy club. Check your local newspaper, school, library, or telescope dealer to find out if there’s a club in your area. At club meetings, you will meet other astronomy enthusiasts with whom you will be able to share your discoveries. Clubs a ...
... A fun way to learn more about astronomy is to join an astronomy club. Check your local newspaper, school, library, or telescope dealer to find out if there’s a club in your area. At club meetings, you will meet other astronomy enthusiasts with whom you will be able to share your discoveries. Clubs a ...
16_Testbank
... 7) Explain how gas in a protostellar disk spirals onto the central star. Answer: Gas in a protostellar disk will orbit like planets, with the innermost particles moving faster than outer ones. This causes friction and therefore heating of the gas which therefore produces light (thermal radiation). E ...
... 7) Explain how gas in a protostellar disk spirals onto the central star. Answer: Gas in a protostellar disk will orbit like planets, with the innermost particles moving faster than outer ones. This causes friction and therefore heating of the gas which therefore produces light (thermal radiation). E ...
Dust processing in debris disks - Max-Planck
... blow-out limit, that must have been produced very recently (Su et al. 2005) But a steady state solution was also found that explains the halo as bound grains (Muller et al. 2010) Need more halo characterisation and modelling ...
... blow-out limit, that must have been produced very recently (Su et al. 2005) But a steady state solution was also found that explains the halo as bound grains (Muller et al. 2010) Need more halo characterisation and modelling ...
Kepler Telescope Spots Smallest Exoplanet Yet The Night Sky
... After dinnertime at this time of year, four carnivore constellations stand in a row from the northeast to south. They're all seen in profile with their noses pointed up and their feet (if any) to the right: Ursa Major in the northeast (with the Big Dipper as its brightest part), Leo in the east, Hyd ...
... After dinnertime at this time of year, four carnivore constellations stand in a row from the northeast to south. They're all seen in profile with their noses pointed up and their feet (if any) to the right: Ursa Major in the northeast (with the Big Dipper as its brightest part), Leo in the east, Hyd ...
Magnitude Scales and Photometric Systems
... sensors such as silicon charge-coupled devices (CCDs) and infrared detectors over the last 20 yr. Light intensities, or magnitudes, measured with these new detectors naturally differ from the visual magnitudes and depend on the color of the star. Initially, there was only the difference between visu ...
... sensors such as silicon charge-coupled devices (CCDs) and infrared detectors over the last 20 yr. Light intensities, or magnitudes, measured with these new detectors naturally differ from the visual magnitudes and depend on the color of the star. Initially, there was only the difference between visu ...
The Very precise Echelle SpectroPolarimeter on the Araki telescope
... because (i) it is difficult to image a large field of view due to the long optical path of the Fresnel rhomb, (ii) technologies are not yet available to produce a large Fresnel rhomb, and (iii) it generates a large deflection of the exiting light due to the rotation, resulting in degradation of the ...
... because (i) it is difficult to image a large field of view due to the long optical path of the Fresnel rhomb, (ii) technologies are not yet available to produce a large Fresnel rhomb, and (iii) it generates a large deflection of the exiting light due to the rotation, resulting in degradation of the ...
Cool as helium
... yellow spectral line signature from the Sun. Lockyer — the first editor of Nature — named it after the Greek word for the Sun, helios. It was the Scottish chemist Sir William Ramsay who first isolated helium in 1895, by treating the uranium mineral cleveite with mineral acids and removing nitrogen a ...
... yellow spectral line signature from the Sun. Lockyer — the first editor of Nature — named it after the Greek word for the Sun, helios. It was the Scottish chemist Sir William Ramsay who first isolated helium in 1895, by treating the uranium mineral cleveite with mineral acids and removing nitrogen a ...
Catching Planets in Formation with GMT
... Size: ~7 X 7 Deg (cloud core plus extended region) GMACS FOV: 8 x 18’ NIRMOS FOV:5.5 x 5.5’ IMACS limiting magnitude I~21.5, S/N=30, in 4 hr @ R~2000 10-4 Lsun or 3- 5MJ 15% too faint (>21.5) for IMACS ...
... Size: ~7 X 7 Deg (cloud core plus extended region) GMACS FOV: 8 x 18’ NIRMOS FOV:5.5 x 5.5’ IMACS limiting magnitude I~21.5, S/N=30, in 4 hr @ R~2000 10-4 Lsun or 3- 5MJ 15% too faint (>21.5) for IMACS ...
How to Buy Your First Telescope
... Inch for inch, reflectors are less expensive than other telescope types. When working with a mirror, manufacturers have to polish only one surface. An apochromatic lens has between four and eight surfaces, plus you’re looking through the lenses so the glass has to be defect-free. All of this makes s ...
... Inch for inch, reflectors are less expensive than other telescope types. When working with a mirror, manufacturers have to polish only one surface. An apochromatic lens has between four and eight surfaces, plus you’re looking through the lenses so the glass has to be defect-free. All of this makes s ...
Astronomy - Mr. Hill`s Science Website
... Where most people live on Earth, summers are hot and filled with many hours of strong sunlight, while winters are cold due to shortened hours of daylight and weak sunlight. You might think that the extreme heat of summer and the icy cold of winter have something to do with how close Earth is to the ...
... Where most people live on Earth, summers are hot and filled with many hours of strong sunlight, while winters are cold due to shortened hours of daylight and weak sunlight. You might think that the extreme heat of summer and the icy cold of winter have something to do with how close Earth is to the ...
Does size matter (in the SFRs)?
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
Title: Optical and NEar IR Interferometric or
... that an adaptive system such as the one envisaged for LBT, with a single artificial star and a single corrector, can achieve excellent correction (Strehl ratio of about 0.5 in the K band) over a large fraction of the sky. Both, quality of correction and sky coverage drop unfortunately going to shor ...
... that an adaptive system such as the one envisaged for LBT, with a single artificial star and a single corrector, can achieve excellent correction (Strehl ratio of about 0.5 in the K band) over a large fraction of the sky. Both, quality of correction and sky coverage drop unfortunately going to shor ...
bowser - Colorado Space Grant Consortium
... • Diurnal functioning. • Can focus on multiple objects in the time it takes for HST to observe one • Easy to maintain • May not be as stable of a • HST cost nearly 6 billion platform as HST ...
... • Diurnal functioning. • Can focus on multiple objects in the time it takes for HST to observe one • Easy to maintain • May not be as stable of a • HST cost nearly 6 billion platform as HST ...
Burge Proc SPIE 4840 226 - LOFT, Large Optics Fabrication and
... numerous small (1-m class) segments are driven to long focal ratios, while those using few large, actively controlled segments can be made as fast as f/0.5. Keywords: Telescope, astronomical optics, optical fabrication ...
... numerous small (1-m class) segments are driven to long focal ratios, while those using few large, actively controlled segments can be made as fast as f/0.5. Keywords: Telescope, astronomical optics, optical fabrication ...
Binocular Objects (MS Word)
... The principal stars of Sagittarius form the famous “Teapot” asterism. The brightest part of the Milky Way seems to emerge from the Teapot's spout like a puff of steam. M22 The Great Sagittarius star cluster is a very large globular -- the best of the constellation's many globulars. At magnitude 5.1 ...
... The principal stars of Sagittarius form the famous “Teapot” asterism. The brightest part of the Milky Way seems to emerge from the Teapot's spout like a puff of steam. M22 The Great Sagittarius star cluster is a very large globular -- the best of the constellation's many globulars. At magnitude 5.1 ...
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.