Report of the HST-JWST Transition Panel
... decay. The HST carries a complement of 6 gyroscopes, and at present 3 are needed for successful operation of the telescope (although operation with 2 gyroscopes is anticipated). These gyroscopes are among the most sensitive ever built, but in the past they have lost their accuracy within a few years ...
... decay. The HST carries a complement of 6 gyroscopes, and at present 3 are needed for successful operation of the telescope (although operation with 2 gyroscopes is anticipated). These gyroscopes are among the most sensitive ever built, but in the past they have lost their accuracy within a few years ...
instruction manual - NexStar Resource Site
... location. • Computerized hand controller with 4,000 object data base. • Storage for programmable user defined objects; and • Many other high performance features! The StarSeeker’s deluxe features combined with Celestron’s legendary optical standards give amateur astronomers one of the most sophistic ...
... location. • Computerized hand controller with 4,000 object data base. • Storage for programmable user defined objects; and • Many other high performance features! The StarSeeker’s deluxe features combined with Celestron’s legendary optical standards give amateur astronomers one of the most sophistic ...
IAU 29th General Assembly
... •FM 2 – Astronomical Heritage: Progressing the UNESCO–IAU Initiative •FM 3 – Scholarly Publication in Astronomy: Evolution or Revolution? •FM 4 – Planetary Nebulae as Probes of Galactic Structure and Evolution •FM 5 – The Legacy of Planck •FM 6 – X-ray Surveys of the Hot and Energetic Cosmos •FM 7 – ...
... •FM 2 – Astronomical Heritage: Progressing the UNESCO–IAU Initiative •FM 3 – Scholarly Publication in Astronomy: Evolution or Revolution? •FM 4 – Planetary Nebulae as Probes of Galactic Structure and Evolution •FM 5 – The Legacy of Planck •FM 6 – X-ray Surveys of the Hot and Energetic Cosmos •FM 7 – ...
Marsbugs Vol. 11, No. 30
... the planets formed. But a new study of their insides suggests they took different paths to giant status. Researchers modeled 50,000 what-ifs of internal structure using real data from the two planets and lab experiments that show how material behaves under extreme pressure. They found Saturn has a h ...
... the planets formed. But a new study of their insides suggests they took different paths to giant status. Researchers modeled 50,000 what-ifs of internal structure using real data from the two planets and lab experiments that show how material behaves under extreme pressure. They found Saturn has a h ...
AMiBA: Hexapod Commissioning and Pointing
... → ccd star position error as a function of mount position → separate average mount error from optical telescope (OT) error mount error = left-overs interpolation table ...
... → ccd star position error as a function of mount position → separate average mount error from optical telescope (OT) error mount error = left-overs interpolation table ...
Chapter 1
... The constellation of Orion is one of the most discernable patterns in the northern hemisphere, and has acted as an important beacon for generations throughout history. Orion stands central in many mythological tales. One of my personal favorites describes the figure of Orion, the hunter, standing by ...
... The constellation of Orion is one of the most discernable patterns in the northern hemisphere, and has acted as an important beacon for generations throughout history. Orion stands central in many mythological tales. One of my personal favorites describes the figure of Orion, the hunter, standing by ...
Site testing for the Discovery Channel Telescope
... approximately 1.5km E and 80m lower in elevation from our site. Measured daily low temperatures at the telescope site are approximately 5 deg C higher on average than 30yr averages measured at the ranger station; daily high temperatures do not deviate as significantly to that long-term database. The ...
... approximately 1.5km E and 80m lower in elevation from our site. Measured daily low temperatures at the telescope site are approximately 5 deg C higher on average than 30yr averages measured at the ranger station; daily high temperatures do not deviate as significantly to that long-term database. The ...
Magnificent Cosmos - Academic Program Pages at Evergreen
... the star 70 Virginis, a similar object with a mass 6.8 times that of Jupiter. The objects orbiting both HD114762 and 70 Virginis are so large that most astronomers are not sure whether to consider them big planets or small brown dwarfs, entities whose masses lie between those of a planet and a star. ...
... the star 70 Virginis, a similar object with a mass 6.8 times that of Jupiter. The objects orbiting both HD114762 and 70 Virginis are so large that most astronomers are not sure whether to consider them big planets or small brown dwarfs, entities whose masses lie between those of a planet and a star. ...
The Cosmic Perspective Our Galaxy
... b) Dust grains scatter blue light and let red light pass through, similar to the blue sky and red sunsets in our atmosphere. c) The blue color is due to the scattering of light by interstellar dust grains and the red color arises from hydrogen emissions. d) The blue light comes from young, hot st ...
... b) Dust grains scatter blue light and let red light pass through, similar to the blue sky and red sunsets in our atmosphere. c) The blue color is due to the scattering of light by interstellar dust grains and the red color arises from hydrogen emissions. d) The blue light comes from young, hot st ...
The Milky Way Galaxy
... Center of Milky Way Galaxy Apparently, there is an enormous black hole at the center of the galaxy, which is the source of these phenomena An accretion disk surrounding the black hole emits enormous amounts of radiation Observations on three stars that are orbiting the core region at a distance ran ...
... Center of Milky Way Galaxy Apparently, there is an enormous black hole at the center of the galaxy, which is the source of these phenomena An accretion disk surrounding the black hole emits enormous amounts of radiation Observations on three stars that are orbiting the core region at a distance ran ...
- ALMA Observatory
... Today we can study the Universe by observing other types of radiation, different from visible light. Radio waves, infrared, gamma rays, ultraviolet and X-rays provide astronomers with glimpses into a completely new world: the “invisible” Universe. It will take many more generations of astronomers to ...
... Today we can study the Universe by observing other types of radiation, different from visible light. Radio waves, infrared, gamma rays, ultraviolet and X-rays provide astronomers with glimpses into a completely new world: the “invisible” Universe. It will take many more generations of astronomers to ...
Tasks - ESA Science
... The Cat’s Eye Nebula (NGC 6543) is a so-called planetary nebula. Despite the name, a planetary nebula has nothing to do with a planet. The term was introduced during the 19th century, as these objects looked rather like planets through the small telescopes of the time. Planetary nebulae form during ...
... The Cat’s Eye Nebula (NGC 6543) is a so-called planetary nebula. Despite the name, a planetary nebula has nothing to do with a planet. The term was introduced during the 19th century, as these objects looked rather like planets through the small telescopes of the time. Planetary nebulae form during ...
Proto-planetary disks
... • direct measure of disk size (100-800 AU, bigger than dust) and inclination • demonstrates keplerian disk rotation (dynamical masses for stars) and direction of motion • AB Aur non-keplerian so not in equilibrium? (Pietu et al. 2005) • RW Aur has 48AU disk around A, asymmetric disk B, as well a ...
... • direct measure of disk size (100-800 AU, bigger than dust) and inclination • demonstrates keplerian disk rotation (dynamical masses for stars) and direction of motion • AB Aur non-keplerian so not in equilibrium? (Pietu et al. 2005) • RW Aur has 48AU disk around A, asymmetric disk B, as well a ...
Extra-solar planets
... In 2011, the Kepler team announced the first discovery of a circumbinary planet – a planet orbiting two stars. The two orbiting stars regularly eclipse each other; the planet also transits, each star, and Kepler data from these planetary transits allowed the size, density and mass of the planet to ...
... In 2011, the Kepler team announced the first discovery of a circumbinary planet – a planet orbiting two stars. The two orbiting stars regularly eclipse each other; the planet also transits, each star, and Kepler data from these planetary transits allowed the size, density and mass of the planet to ...
The Night Sky
... the invisibly faint asteroid 2892 Filipenko. Track map and finder charts for the shadow path across the US, the star to be occulted, and times. Saturday, April 2 • This is the time of year when Arcturus shines just as high in the east as Sirius, the brighter Winter Star, shines in the southwest (as ...
... the invisibly faint asteroid 2892 Filipenko. Track map and finder charts for the shadow path across the US, the star to be occulted, and times. Saturday, April 2 • This is the time of year when Arcturus shines just as high in the east as Sirius, the brighter Winter Star, shines in the southwest (as ...
Undiscovered Worlds educators guide
... are nearly impossible to photograph in the traditional sense, so we have to find them by observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the elec ...
... are nearly impossible to photograph in the traditional sense, so we have to find them by observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the elec ...
CCD Observatory in school - EU-HOU
... typical webcam usually costs about €25 and after slight adjustments it can be used for very interesting observations. What criteria should be then taken into account while choosing a particular model? The most important parameter in a webcam is the type of sensor used in it. Although we can choose b ...
... typical webcam usually costs about €25 and after slight adjustments it can be used for very interesting observations. What criteria should be then taken into account while choosing a particular model? The most important parameter in a webcam is the type of sensor used in it. Although we can choose b ...
What Are the Faint X-ray Transients Near the Galactic Center?
... Another LMXB (0.1 pc from Sgr A*) with Periodic Eclipses ...
... Another LMXB (0.1 pc from Sgr A*) with Periodic Eclipses ...
arXiv:1505.07406v1 [hep-ph] 27 May 2015
... corresponds to the situation in the early Universe, when the number densities of different particle species, e.g., dark matter (DM) particles and photons, are universally distributed in space. That picture, comfortably accomodated in the ΛCDM cosmology supplemented by the short stage of an inflation ...
... corresponds to the situation in the early Universe, when the number densities of different particle species, e.g., dark matter (DM) particles and photons, are universally distributed in space. That picture, comfortably accomodated in the ΛCDM cosmology supplemented by the short stage of an inflation ...
EVERYTHING YOU EVER WANTED TO KNOW ABOUT GAIA!
... What is Gaia? Gaia is a satellite that the European Space Agency will launch around 2011. It will measure distances, positions, and velocities of stars in our Galaxy, the Milky Way, to create the most accurate 3-D picture of our Galaxy that we've ever had. Why bother measuring distances and velociti ...
... What is Gaia? Gaia is a satellite that the European Space Agency will launch around 2011. It will measure distances, positions, and velocities of stars in our Galaxy, the Milky Way, to create the most accurate 3-D picture of our Galaxy that we've ever had. Why bother measuring distances and velociti ...
ISS Sighting Opportunities
... morning Eastern Daylight Time. Io will be barely off the planet's western limb. · Tuesday, Sept. 27 · Sometime between about 8:30 and 10 p.m., depending on where you live in your time zone, bright Arcturus low in the west-northwest will sink to exactly the same height as bright Capella has risen to ...
... morning Eastern Daylight Time. Io will be barely off the planet's western limb. · Tuesday, Sept. 27 · Sometime between about 8:30 and 10 p.m., depending on where you live in your time zone, bright Arcturus low in the west-northwest will sink to exactly the same height as bright Capella has risen to ...
Autoguiding – Beginners Guide to v2.
... more than one pixel on the guide camera, as such Autoguiders are able to use the variations of the amount light illuminating each pixel to calculate where the star should actually be located. As a result, most Autoguiders have sub pixel accuracy. In other words, the star can be tracked to an accurac ...
... more than one pixel on the guide camera, as such Autoguiders are able to use the variations of the amount light illuminating each pixel to calculate where the star should actually be located. As a result, most Autoguiders have sub pixel accuracy. In other words, the star can be tracked to an accurac ...
document
... — Sunlight scattered off forward outer baffle edge = 2E-5 — Earthlight scattered off forward outer baffle inner surface = 0.02 — Total stray = 0.02 photon/pixel/sec/micron ISAL conclusion: “manageable” Long outer baffle is clearly preferred — limit is launch fairing and S/C size ASAP software in pla ...
... — Sunlight scattered off forward outer baffle edge = 2E-5 — Earthlight scattered off forward outer baffle inner surface = 0.02 — Total stray = 0.02 photon/pixel/sec/micron ISAL conclusion: “manageable” Long outer baffle is clearly preferred — limit is launch fairing and S/C size ASAP software in pla ...
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.