Oct 2011 - Bays Mountain Park
... is found between the constellations of Aries and the more elusive Cetus in the east as darkness falls. At magnitude -2.9 it is unmistakable to the naked eye in the fairly blank area between the Ram and the Sea Monster. Jupiter is especially nice this month since it reaches opposition or opposite the ...
... is found between the constellations of Aries and the more elusive Cetus in the east as darkness falls. At magnitude -2.9 it is unmistakable to the naked eye in the fairly blank area between the Ram and the Sea Monster. Jupiter is especially nice this month since it reaches opposition or opposite the ...
Space Information Booklet
... out from the Sun (its inner edge is about at the orbit of Neptune, while its outer edge is about twice that diameter). Kuiper Belt Objects (KBOs) are, as their name implies, objects that originate from or orbit in the Kuiper Belt. Pluto is the only one KBO which was known for more than 60 years. Ma ...
... out from the Sun (its inner edge is about at the orbit of Neptune, while its outer edge is about twice that diameter). Kuiper Belt Objects (KBOs) are, as their name implies, objects that originate from or orbit in the Kuiper Belt. Pluto is the only one KBO which was known for more than 60 years. Ma ...
Lecture Eleven (Powerpoint format)
... In determining the position of our sun within our galaxy, astronomers were long confused by the fact that simply counting stars, we appear to be at the center of the Milky Way. The problem with this method is that it does not take into account the absorption and reddening of starlight by interve ...
... In determining the position of our sun within our galaxy, astronomers were long confused by the fact that simply counting stars, we appear to be at the center of the Milky Way. The problem with this method is that it does not take into account the absorption and reddening of starlight by interve ...
1 Introduction - Arecibo Observatory
... With the arrival at the Observatory of the Arecibo L-band Feed Array (ALFA) in mid2004, an exciting new facility with wide user-community appeal was added to the telescope’s receiver ensemble. ALFA is a seven-feed receiver system that allows large-scale surveys of the sky to be conducted with unprec ...
... With the arrival at the Observatory of the Arecibo L-band Feed Array (ALFA) in mid2004, an exciting new facility with wide user-community appeal was added to the telescope’s receiver ensemble. ALFA is a seven-feed receiver system that allows large-scale surveys of the sky to be conducted with unprec ...
Galileo`s telescope - Exhibits on-line
... twenty magnifications, that is, more powerful by far that all the others circulating through Europe at the time, which utilised ordinary lenses made for spectacles, of low quality and with unsuitable focal lengths. The instruments developed by Galileo were highly superior in performance, for example ...
... twenty magnifications, that is, more powerful by far that all the others circulating through Europe at the time, which utilised ordinary lenses made for spectacles, of low quality and with unsuitable focal lengths. The instruments developed by Galileo were highly superior in performance, for example ...
search for extrasolar planets
... • Classic problems: stellar glare, atmospheric blur • Even HST doesn’t quite (yet?) separate planets’ reflected light from stars • Combining separated telescopes can help, both in resolution and by nulling out most of the starlight. • Optical-wavelength interferometry is technically ...
... • Classic problems: stellar glare, atmospheric blur • Even HST doesn’t quite (yet?) separate planets’ reflected light from stars • Combining separated telescopes can help, both in resolution and by nulling out most of the starlight. • Optical-wavelength interferometry is technically ...
Using a distant X-ray source to detect small Transneptunian Objects
... Using a distant X-ray source to detect small Transneptunian Objects (TNOs) [translated and adapted from Sterne und Weltraum 10/2006 by Gareth Kelly] A Taiwanese astronomy team has used an unusual technique to detect very small TNOs. They used measurements from the satellite ROSSI X-ray Timing Explor ...
... Using a distant X-ray source to detect small Transneptunian Objects (TNOs) [translated and adapted from Sterne und Weltraum 10/2006 by Gareth Kelly] A Taiwanese astronomy team has used an unusual technique to detect very small TNOs. They used measurements from the satellite ROSSI X-ray Timing Explor ...
Planet-finding Activity Guide How do we find planets around other
... Direct Imaging/Starlight Suppression – Have your audience pretend to be a telescope staring at the star. Hold the star so that the view of the planet is not obstructed and so that it does not appear to be transiting the star. Have participants hold their thumb out in front of their view to block ...
... Direct Imaging/Starlight Suppression – Have your audience pretend to be a telescope staring at the star. Hold the star so that the view of the planet is not obstructed and so that it does not appear to be transiting the star. Have participants hold their thumb out in front of their view to block ...
2010-02 LAAS Bulletin I - Los Angeles Astronomical Society
... times its present radius, while Earth (top green curve) will be about 102.35 or 224 current solar radii away (1 AU). For the bottom blue curve, the scale is a linear scale of solar mass in units of present solar mass. The sun stars out at 1.0 solar masses, drops to 0.8 at the red giant stage, and fa ...
... times its present radius, while Earth (top green curve) will be about 102.35 or 224 current solar radii away (1 AU). For the bottom blue curve, the scale is a linear scale of solar mass in units of present solar mass. The sun stars out at 1.0 solar masses, drops to 0.8 at the red giant stage, and fa ...
AUI CA science talk - National Radio Astronomy Observatory
... Extinction features seen in silhouette against the Galactic IR background 1,000s seen in the Spitzer GLIMPSE survey (and previous surveys like MSX) ...
... Extinction features seen in silhouette against the Galactic IR background 1,000s seen in the Spitzer GLIMPSE survey (and previous surveys like MSX) ...
Amanda Boyle Starstuff
... dead. Because space is cold. And very dark. While stars are not themselves alive, they produce light and heat and radiation that allows us to live. Without stars, we would have never existed, for they not only create all of the elements that make up our existence, but they also provide the very ener ...
... dead. Because space is cold. And very dark. While stars are not themselves alive, they produce light and heat and radiation that allows us to live. Without stars, we would have never existed, for they not only create all of the elements that make up our existence, but they also provide the very ener ...
Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman
... around the two inner planets. The measured variations are too large to be caused by the planetary disks (Llama & Shkolnik 2016) and would correspond to opaque exospheric disks extending up to approximately seven times the planets’ radii. We note that the putative exosphere of TRAPPIST-1c would absor ...
... around the two inner planets. The measured variations are too large to be caused by the planetary disks (Llama & Shkolnik 2016) and would correspond to opaque exospheric disks extending up to approximately seven times the planets’ radii. We note that the putative exosphere of TRAPPIST-1c would absor ...
Astronomical Instruments
... sensitive only to X rays? – As you build this scientific argument, you must imagine a totally new situation. – That is sometimes a powerful tool in the critical analysis of an idea. ...
... sensitive only to X rays? – As you build this scientific argument, you must imagine a totally new situation. – That is sometimes a powerful tool in the critical analysis of an idea. ...
Assignment 10
... million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. the black hole at the center is really another galaxy that our Milky Way swallowed; none of its material comes f ...
... million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. the black hole at the center is really another galaxy that our Milky Way swallowed; none of its material comes f ...
The TMT LGSF Launch Telescope Assembly System
... 35 arcsec and one additional on-axis guide star. (black) – MIRAO asterism: consists of 3 LGS equally spaced on a circle of radius of 70 arcsec. (red) – MOAO asterism: consists of 8 LGS, 3 equally spaced on a circle of radius of 70 arcsec and 5 equally spaced on a circle of radius of 150 arcsec. (blu ...
... 35 arcsec and one additional on-axis guide star. (black) – MIRAO asterism: consists of 3 LGS equally spaced on a circle of radius of 70 arcsec. (red) – MOAO asterism: consists of 8 LGS, 3 equally spaced on a circle of radius of 70 arcsec and 5 equally spaced on a circle of radius of 150 arcsec. (blu ...
Planets of Our, and Other, Solar Systems
... -- cosmic ray induced transformations of Ar40->Al-26->Mg-26 over long periods in the solidified rock would not produce the uniform distribution seen since the required cosmic ray energies to produce Al26 are low and penetrate poorly into rock. -- Asymptotic Giant Branch stars, and massive Wolf Rayet ...
... -- cosmic ray induced transformations of Ar40->Al-26->Mg-26 over long periods in the solidified rock would not produce the uniform distribution seen since the required cosmic ray energies to produce Al26 are low and penetrate poorly into rock. -- Asymptotic Giant Branch stars, and massive Wolf Rayet ...
PLANETS
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
Paper - AMOS Conference
... population of small size space debris. It was operating in GEO from 1996 until 2002. This impact ionisation detector had a sensor surface of 0.1 m2. Until July 2002 when the spacecraft was shut down it recorded more than 3000 impacts in the micrometre size range. Inter alia, GORID measured numerous ...
... population of small size space debris. It was operating in GEO from 1996 until 2002. This impact ionisation detector had a sensor surface of 0.1 m2. Until July 2002 when the spacecraft was shut down it recorded more than 3000 impacts in the micrometre size range. Inter alia, GORID measured numerous ...
... now-extinct radioactive isotopes. It might seem to be an odd way to make a living, studying something that no longer exists, but the payoff in understanding element formation, the formation of the Solar System, and the timing of events during its formation is well worth the effort. Robert Nichols an ...
Seeing Earth`s Orbit in the Stars: Parallax and Aberration
... It was impossible to measure parallax using Hooke’s method without first knowing about aberration. As Eq. 2 shows, the angular displacement due to aberration does not depend on the distance to a sta ...
... It was impossible to measure parallax using Hooke’s method without first knowing about aberration. As Eq. 2 shows, the angular displacement due to aberration does not depend on the distance to a sta ...
PLANETS
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
Comets
... doctrine taught that comets were phenomena of Earth’s atmosphere. Tycho Brahe showed that widely spaced observers see a given comet in the same place in the sky. “Parallax” indicates that near objects in the sky appear to move to different parts of the sky when viewed from different parts of the wor ...
... doctrine taught that comets were phenomena of Earth’s atmosphere. Tycho Brahe showed that widely spaced observers see a given comet in the same place in the sky. “Parallax” indicates that near objects in the sky appear to move to different parts of the sky when viewed from different parts of the wor ...
Glossary Topics - Home - DMNS Galaxy Guide Portal
... Stars with initial masses between eight and 50 times that of the Sun do NOT evolve to the Wolf-Rayet stage: they never completely lose the hydrogen in their outer layers. Such stars also become blue and red supergiants. As they build up an iron core, they too explode as supernovae. The remaining cor ...
... Stars with initial masses between eight and 50 times that of the Sun do NOT evolve to the Wolf-Rayet stage: they never completely lose the hydrogen in their outer layers. Such stars also become blue and red supergiants. As they build up an iron core, they too explode as supernovae. The remaining cor ...
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.