Celestron Dacl"fl"c ...the world`s leading manufacturer the Celestron
... This rating of telescopes of difference aperture takes into consideration the seeing conditions which occasionally limit the magnification at which large telescopes can be used. It is based on the ...
... This rating of telescopes of difference aperture takes into consideration the seeing conditions which occasionally limit the magnification at which large telescopes can be used. It is based on the ...
Keck NGAO Relay Design - Caltech Optical Observatories
... and due to the smaller field and thus smaller K-mirror assembly, the previous 2-tier cascaded relay from the conceptual design phase would be redesigned on one level. In order to accommodate the-one tier design, an additional fold mirror was needed in the diverging optical space following the K-mirr ...
... and due to the smaller field and thus smaller K-mirror assembly, the previous 2-tier cascaded relay from the conceptual design phase would be redesigned on one level. In order to accommodate the-one tier design, an additional fold mirror was needed in the diverging optical space following the K-mirr ...
Introduction to Galaxies - West Jefferson Local Schools
... The spiral galaxies M 91 (left) and M 109 (right) have bars across their nuclei from which spiral arms unwind. In virtually all spirals (barred or not) the galaxies rotate such that the spiral arms trail behind in the rotation. The Milky Way is thought to be a barred spiral galaxy. (NOAO/AURA Photos ...
... The spiral galaxies M 91 (left) and M 109 (right) have bars across their nuclei from which spiral arms unwind. In virtually all spirals (barred or not) the galaxies rotate such that the spiral arms trail behind in the rotation. The Milky Way is thought to be a barred spiral galaxy. (NOAO/AURA Photos ...
ALTERNATIVE DESIGNS FOR SPACE X
... Let us to briefly introduce and discuss the history of Kirkpatrick-Baez (K-B) systems especially in space use, The first two-dimensional x-ray image ever obtained in the laboratory with grazing incidence reflection was taken by a Kirkpatrick-Baez system [2]. The configuration is shown in Figure 2. T ...
... Let us to briefly introduce and discuss the history of Kirkpatrick-Baez (K-B) systems especially in space use, The first two-dimensional x-ray image ever obtained in the laboratory with grazing incidence reflection was taken by a Kirkpatrick-Baez system [2]. The configuration is shown in Figure 2. T ...
NexStar GT - Celestron
... 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 ...
comet panstarrs
... be a faint, fuzzy object in the Ursa Minor region. If you have a larger telescope like our CGE PRO 1400 HD, you should be able to continue to follow the comet for at ...
... be a faint, fuzzy object in the Ursa Minor region. If you have a larger telescope like our CGE PRO 1400 HD, you should be able to continue to follow the comet for at ...
Hubble Deep Field Academy -- Overview
... Natural breaks within the activity. Is there enough flexibility that students can complete all or selected parts within the time restraints of the daily schedule? ...
... Natural breaks within the activity. Is there enough flexibility that students can complete all or selected parts within the time restraints of the daily schedule? ...
Discovery of two new satellites of Pluto
... was optimized to study the surfaces of Pluto and Charon and used much shorter exposure times (6 s for a V-band filter and 12 s for a Bband-filter) than employed in our programme. Nevertheless, by combining all the images obtained on a given date in the same filter, a limiting sensitivity could be ac ...
... was optimized to study the surfaces of Pluto and Charon and used much shorter exposure times (6 s for a V-band filter and 12 s for a Bband-filter) than employed in our programme. Nevertheless, by combining all the images obtained on a given date in the same filter, a limiting sensitivity could be ac ...
PDF - STRW Local - Universiteit Leiden
... – e.g. our role in instrument development. Frans Snik, who won a Starters Grant from the European Research Council this year, and Matthew Kenworthy write about new smart ways to search for faint planets orbiting bright stars. This is enabled using liquid crystals in coronagraphs reaching extremely h ...
... – e.g. our role in instrument development. Frans Snik, who won a Starters Grant from the European Research Council this year, and Matthew Kenworthy write about new smart ways to search for faint planets orbiting bright stars. This is enabled using liquid crystals in coronagraphs reaching extremely h ...
Mirror coatings for the Large Synoptic Survey Telescope
... Magnetron sputtering deposition is a technique that is used commonly in industry and that has been applied to small and medium size astronomical mirrors. However, for large monolithic astronomical mirrors (diameter of 4m or above) the evaporation process is the most commonly developed and used techn ...
... Magnetron sputtering deposition is a technique that is used commonly in industry and that has been applied to small and medium size astronomical mirrors. However, for large monolithic astronomical mirrors (diameter of 4m or above) the evaporation process is the most commonly developed and used techn ...
Astronomical Picture of the Day
... slightly dark? Visible above is a close-up picture of a sunspot, a depression on the Sun's face that is slightly cooler and less luminous than the rest of the Sun. The Sun's complex magnetic field creates this cool region by inhibiting hot material from entering the spot. Sunspots can be larger than ...
... slightly dark? Visible above is a close-up picture of a sunspot, a depression on the Sun's face that is slightly cooler and less luminous than the rest of the Sun. The Sun's complex magnetic field creates this cool region by inhibiting hot material from entering the spot. Sunspots can be larger than ...
Ground-Conjugate Wide Field Adaptive Optics for the ELTs F. Rigaut
... loss on Ritchey-Chretien design, the secondary being conjugated below ground level. This performance loss remains to be evaluated. The primary mirror, or a prime focus corrector, could be used for the purpose of ground layer compensation. ...
... loss on Ritchey-Chretien design, the secondary being conjugated below ground level. This performance loss remains to be evaluated. The primary mirror, or a prime focus corrector, could be used for the purpose of ground layer compensation. ...
An Expanded View of the Universe
... ESO, the pre-eminent intergovernmental science and technology organisation in astronomy. The challenge is to consolidate and strengthen this position for the future. This will be achieved with a revolutionary new ground-based telescope concept, the European Extremely Large Telescope (E-ELT). With a ...
... ESO, the pre-eminent intergovernmental science and technology organisation in astronomy. The challenge is to consolidate and strengthen this position for the future. This will be achieved with a revolutionary new ground-based telescope concept, the European Extremely Large Telescope (E-ELT). With a ...
2. Galileo Magnifico
... scientists, but it’s no exaggeration to claim that the modern era of physics and astronomy began with his work. Galileo helped revolutionize our thoughts about the way that the world works, opened our eyes to the true majesty of the Universe, and developed the foundations of scientific observation a ...
... scientists, but it’s no exaggeration to claim that the modern era of physics and astronomy began with his work. Galileo helped revolutionize our thoughts about the way that the world works, opened our eyes to the true majesty of the Universe, and developed the foundations of scientific observation a ...
Proposal - ESA Science
... photometry in the optical. We target planets hotter than 600K to take advantage of their well-mixed atmospheres which should show minimal condensation and sequestration of high-Z materials and thus reveal their bulk and elemental composition (especially C, O, N, S, Si). Observations of these hot exo ...
... photometry in the optical. We target planets hotter than 600K to take advantage of their well-mixed atmospheres which should show minimal condensation and sequestration of high-Z materials and thus reveal their bulk and elemental composition (especially C, O, N, S, Si). Observations of these hot exo ...
Teaching Tips Table of Contents - Hubble Deep Field
... 11. How “deep” can these surveys eventually go? Is there a limit? ............................... 41 12. The Hubble Deep Field opened new cosmic territory for exploration. What other deep-sky surveys did Hubble participate in? ............................................................... 41 13. Wh ...
... 11. How “deep” can these surveys eventually go? Is there a limit? ............................... 41 12. The Hubble Deep Field opened new cosmic territory for exploration. What other deep-sky surveys did Hubble participate in? ............................................................... 41 13. Wh ...
RPT-O-G0047 Gemini Telescopes f/16 Optical
... Visible System. The "Visible System" refers to the f/16 telescope using the visible secondary mirror, where the primary mirror forms the system stop. Vignetting. "Vignetting" is defined as the reduction in total focal plane illumination due to a limiting aperture other than the system stop. Zenith a ...
... Visible System. The "Visible System" refers to the f/16 telescope using the visible secondary mirror, where the primary mirror forms the system stop. Vignetting. "Vignetting" is defined as the reduction in total focal plane illumination due to a limiting aperture other than the system stop. Zenith a ...
L161 MATURE AND FRESH SURFACES ON THE NEWBORN
... may indicate that Karin has an elongated-shaped body, and a small difference between the magnitudes at 0.2 and 0.7 could tentatively imply that the surface around 0.2 is mature and darkened by space weathering while the surface around 0.7 is fresh, although the shape difference might be more respons ...
... may indicate that Karin has an elongated-shaped body, and a small difference between the magnitudes at 0.2 and 0.7 could tentatively imply that the surface around 0.2 is mature and darkened by space weathering while the surface around 0.7 is fresh, although the shape difference might be more respons ...
Design and Analysis for Interferometric Testing of the GMT Primary
... flow down as contributions to budgets for wavefront, support force, or geometric tolerances, as shown in Table 1. Fabrication errors in primary mirrors are allowed to contribute a structure function that corresponds to atmospheric seeing with 80% encircled energy θ80 of 0.166 arcsec, with a goal of ...
... flow down as contributions to budgets for wavefront, support force, or geometric tolerances, as shown in Table 1. Fabrication errors in primary mirrors are allowed to contribute a structure function that corresponds to atmospheric seeing with 80% encircled energy θ80 of 0.166 arcsec, with a goal of ...
Spectroscopic confirmation of a galaxy at redshift z=8.6
... elements), a mass distribution either similar to that of massive stars in local galaxies or with only very massive stars18, and ages between 10 and 100 Myr (but perhaps as old as 300 Myr (ref. 19)). Considering this range of mass distributions, metallicities and ages, we estimate the star formation ...
... elements), a mass distribution either similar to that of massive stars in local galaxies or with only very massive stars18, and ages between 10 and 100 Myr (but perhaps as old as 300 Myr (ref. 19)). Considering this range of mass distributions, metallicities and ages, we estimate the star formation ...
Direct Imaging of Exoplanets - American Museum of Natural History
... a conventional spectrometer or an integral field spectrometer. The resolution will be low, because the planet is faint; however, since many molecular bands are intrinsically low-resolution features, we can still learn much about an atmosphere. ...
... a conventional spectrometer or an integral field spectrometer. The resolution will be low, because the planet is faint; however, since many molecular bands are intrinsically low-resolution features, we can still learn much about an atmosphere. ...
nexstar_gt_60,80114.. - Downloads
... 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 ...
TECHNICAL REPORT
... emission by observing the dip in the mid-infrared light curve as the planet passes behind its host star. Extra-solar giant planets typically emit ~1% of the mid-infrared emission measured from the aggregate system; therefore, very high signal-to-noise (SNR), timeseries observations are needed to dis ...
... emission by observing the dip in the mid-infrared light curve as the planet passes behind its host star. Extra-solar giant planets typically emit ~1% of the mid-infrared emission measured from the aggregate system; therefore, very high signal-to-noise (SNR), timeseries observations are needed to dis ...
James Webb Space Telescope
The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength visible to the mid-infrared, and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. The telescope features a segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below 50 K (−220 °C; −370 °F).JWST's capabilities will enable a broad range of investigations across the fields of astronomy and cosmology. One particular goal involves observing some of the most distant objects in the Universe, beyond the reach of current ground and space based instruments. This includes the very first stars, the epoch of reionization, and the formation of the first galaxies. Another goal is understanding the formation of stars and planets. This will include imaging molecular clouds and star-forming clusters, studying the debris disks around stars, direct imaging of planets, and spectroscopic examination of planetary transits.In gestation since 1996, the project represents an international collaboration of about 17 countries led by NASA, and with significant contributions from the European Space Agency and the Canadian Space Agency. It is named after James E. Webb, the second administrator of NASA, who played an integral role in the Apollo program.The JWST has a history of major cost overruns and delays. The first realistic budget estimates were that the observatory would cost $1.6 billion and launch in 2011. NASA has now scheduled the telescope for a 2018 launch. In 2011, the United States House of Representatives voted to terminate funding, after about $3 billion had been spent and 75 percent of its hardware was in production. Funding was restored in compromise legislation with the US Senate, and spending on the program was capped at $8 billion. As of December 2014, the telescope remained on schedule and within budget, but at risk of further delays.