Acquisition, Tracking and Pointing control
... while a separate transmitter telescope, movable with respect to the first telescope, directs,the laser beam at the desired target. A Relay Mirror space application is an application of increased difficulty with respect to the typical spacebased telescopes application. In fact beyond a high line of s ...
... while a separate transmitter telescope, movable with respect to the first telescope, directs,the laser beam at the desired target. A Relay Mirror space application is an application of increased difficulty with respect to the typical spacebased telescopes application. In fact beyond a high line of s ...
Origami Sunshield Concepts for Space Telescopes Lee Wilson and Sergio Pellegrino Rolf Danner
... The area is important because it is proportional to the overall mass, while the total fold length is important because thermal shorts may occur at the folds. Increasing the fold length would thus decrease the effectiveness of the sunshield to maintain uniform thermal conditions. Figure 12 shows plot ...
... The area is important because it is proportional to the overall mass, while the total fold length is important because thermal shorts may occur at the folds. Increasing the fold length would thus decrease the effectiveness of the sunshield to maintain uniform thermal conditions. Figure 12 shows plot ...
Teacher Guide Whole-no background
... through his own discoveries, but by paving the way for his fellow astronomers and future generations of scientists. Most people, especially young people, are not aware that America led the world in space exploration long before NASA and the Moon landing. For nearly five decades, from the 1890s throu ...
... through his own discoveries, but by paving the way for his fellow astronomers and future generations of scientists. Most people, especially young people, are not aware that America led the world in space exploration long before NASA and the Moon landing. For nearly five decades, from the 1890s throu ...
Handout Galilean telescope how to make
... While holding up your telescope, move your head backwards and forwards from the little or eyepiece lens. Notice that the magnified image does not, like most things in the world, get bigger and smaller as you move your head closer to further away from the eyepiece lens. Images in the world are real o ...
... While holding up your telescope, move your head backwards and forwards from the little or eyepiece lens. Notice that the magnified image does not, like most things in the world, get bigger and smaller as you move your head closer to further away from the eyepiece lens. Images in the world are real o ...
Galaxy Notes File
... •spiral-like but without defined arms, show bright knots with O,B stars •unsymmetrical with dust lanes and gas filaments, explosive ...
... •spiral-like but without defined arms, show bright knots with O,B stars •unsymmetrical with dust lanes and gas filaments, explosive ...
SPIE 2016-Gressler-Telescope-Status_SPIE Submittal
... Large Synoptic Survey Telescope, 950 N Cherry Ave., Tucson, AZ, USA 85719 ABSTRACT The Large Synoptic Survey Telescope (LSST) Project1 received its construction authorization from the National Science Foundation in August 2014. The Telescope and Site (T&S) group has made considerable progress toward ...
... Large Synoptic Survey Telescope, 950 N Cherry Ave., Tucson, AZ, USA 85719 ABSTRACT The Large Synoptic Survey Telescope (LSST) Project1 received its construction authorization from the National Science Foundation in August 2014. The Telescope and Site (T&S) group has made considerable progress toward ...
Toward a revival of Stellar Intensity Interferometry
... high-speed photon-counting instrument. The entrance pupil can be optically sliced into a hundred segments, each feeding a separate detector. Different means of electronically combining the signal in software would yield either a photometric signal of very high time-resolution using the collecting ar ...
... high-speed photon-counting instrument. The entrance pupil can be optically sliced into a hundred segments, each feeding a separate detector. Different means of electronically combining the signal in software would yield either a photometric signal of very high time-resolution using the collecting ar ...
Spectroscopy and Spectrophotometry
... • Typically a reference spectrum is used. • In absorp@on, an iodine cell is placed between the gra@ng and the slit. The imaged spectrum thus has iodine absorp@on features. • In emission a second reference spectrum is generated that is spa@ally separated on the CCD e.g. using a Thorium lamp. ...
... • Typically a reference spectrum is used. • In absorp@on, an iodine cell is placed between the gra@ng and the slit. The imaged spectrum thus has iodine absorp@on features. • In emission a second reference spectrum is generated that is spa@ally separated on the CCD e.g. using a Thorium lamp. ...
Overview of the Laser Communications Relay
... Project (LCRD), a joint project between NASA’s Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL). LCRD will provide two years of continuous high data rate optical comm ...
... Project (LCRD), a joint project between NASA’s Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL). LCRD will provide two years of continuous high data rate optical comm ...
A Taxonomy of IRMOS/MOAO Architectures and their Consequences
... as it becomes available. With present technology, an entry level IRMOS with MOAO that meets SRD requirements in H and K band is feasible. Meeting the requirements in the I through K bands requires extensions to the technology as it exists today. With ongoing R&D efforts in both universities and indu ...
... as it becomes available. With present technology, an entry level IRMOS with MOAO that meets SRD requirements in H and K band is feasible. Meeting the requirements in the I through K bands requires extensions to the technology as it exists today. With ongoing R&D efforts in both universities and indu ...
targets - siamois
... -stellar magnitude < 8.5 for solar-like oscillations - increase of the number of reachable targets possibility to achieve specific observations in selected targets ...
... -stellar magnitude < 8.5 for solar-like oscillations - increase of the number of reachable targets possibility to achieve specific observations in selected targets ...
NASA`s IRIS Telescope Offers First Glimpse of Sun`s Mysterious
... NASA's IRIS Telescope Offers First Glimpse of Sun's Mysterious Atmosphere ...
... NASA's IRIS Telescope Offers First Glimpse of Sun's Mysterious Atmosphere ...
Appendix B-Collimation - Backyard Astronomer`s Guide
... on the lens can help remove stains. 5. Use a dry swab or cotton ball for a final cleaning of moist areas, plus some more air puffs to blow off the bits of tissue that inevitably remain. A few smears might remain, but a final polish with a light condensation from your own breath will restore the pris ...
... on the lens can help remove stains. 5. Use a dry swab or cotton ball for a final cleaning of moist areas, plus some more air puffs to blow off the bits of tissue that inevitably remain. A few smears might remain, but a final polish with a light condensation from your own breath will restore the pris ...
The Magellan 20 Telescope Science Goals
... kinematics of the IGM becomes possible, mapping tenuous structures with densities down to the mean density of the universe. A combination with a traditional galaxy redshift survey of the same volume sampled by the lines of sight to the background galaxies would allow us to correlate the properties o ...
... kinematics of the IGM becomes possible, mapping tenuous structures with densities down to the mean density of the universe. A combination with a traditional galaxy redshift survey of the same volume sampled by the lines of sight to the background galaxies would allow us to correlate the properties o ...
ISS RAM Direction
... – Hybrid Doppler Wind Lidar measuring radial winds from two look angles +/45 deg from normal to velocity vector (e.g. fore and aft) on a common ground track. – Measurements alternate between look angles with programmable dwell time (typ. 4, 12 or 24 sec) and max time to switch and settle of 0.5 sec. ...
... – Hybrid Doppler Wind Lidar measuring radial winds from two look angles +/45 deg from normal to velocity vector (e.g. fore and aft) on a common ground track. – Measurements alternate between look angles with programmable dwell time (typ. 4, 12 or 24 sec) and max time to switch and settle of 0.5 sec. ...
An approach to ground based space surveillance
... small telescopes to the size of the seeing disk of the atmosphere. Despite the increased sensitivity and expense of a 1 m telescope it is effectively degraded to a resolving capability less than that of a 10 cm telescope due to atmospheric seeing. This problem has been known for some time and adapti ...
... small telescopes to the size of the seeing disk of the atmosphere. Despite the increased sensitivity and expense of a 1 m telescope it is effectively degraded to a resolving capability less than that of a 10 cm telescope due to atmospheric seeing. This problem has been known for some time and adapti ...
First Light for May, 2001 - South Bay Astronomical Society
... The transit method can only find systems that are aligned with our line of sight. The Stellar Wobble Method can find planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method pro ...
... The transit method can only find systems that are aligned with our line of sight. The Stellar Wobble Method can find planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method pro ...
Wave Interference and Diffraction Part 3: Telescopes and Interferometry Paul Avery
... Compare to 0.25” for best earthbound telescope, 0.06” for Hubble ...
... Compare to 0.25” for best earthbound telescope, 0.06” for Hubble ...
6 OPTICS
... For a well baffled optical system, the infrared background of the telescope will depend primarily on the coatings and cleanliness of the primary and secondary optics. The standard coating for most telescopes is vacuum-deposited aluminum. This has the advantage of being a relatively robust coating wi ...
... For a well baffled optical system, the infrared background of the telescope will depend primarily on the coatings and cleanliness of the primary and secondary optics. The standard coating for most telescopes is vacuum-deposited aluminum. This has the advantage of being a relatively robust coating wi ...
Galaxies - WordPress.com
... It provides us with many of the images we have of space. It is an especially useful telescope because it does not have to view things through our ...
... It provides us with many of the images we have of space. It is an especially useful telescope because it does not have to view things through our ...
Kepler
... • The Kepler instrument is a specially designed 0.95-meter diameter telescope called a photometer or light meter. • It has a very large field of view — 105 square degrees, which is comparable to the area of your hand held at arm's length. • Using this wide field of view it will stare at the same sta ...
... • The Kepler instrument is a specially designed 0.95-meter diameter telescope called a photometer or light meter. • It has a very large field of view — 105 square degrees, which is comparable to the area of your hand held at arm's length. • Using this wide field of view it will stare at the same sta ...
The Dimensions Program - Asnuntuck Community College
... Mizar A and Mizar B Another binary system is the Mizar system in the Big Dipper, Figure 5. Mizar A and Mizar B are two stars that rotate around each other every thousands of years or so. It has been known that Mizar A is itself a binary system, and was imaged for the first time by the Optical Interf ...
... Mizar A and Mizar B Another binary system is the Mizar system in the Big Dipper, Figure 5. Mizar A and Mizar B are two stars that rotate around each other every thousands of years or so. It has been known that Mizar A is itself a binary system, and was imaged for the first time by the Optical Interf ...
Dishing Up the Data: The Role of Australian Space Tracking and
... Goldstone, California. In order to maintain continuous communications with lunar and planetary spacecraft, a minimum of three tracking stations, located around the globe at approximately 120° apart, is required to ensure that a spacecraft remains under constant observation despite the rotation of E ...
... Goldstone, California. In order to maintain continuous communications with lunar and planetary spacecraft, a minimum of three tracking stations, located around the globe at approximately 120° apart, is required to ensure that a spacecraft remains under constant observation despite the rotation of E ...
The Surveyors` Heliotrope
... remote localities, such as on the tops of high mountains, it was often difficult to subsist the attendant, and the employment of an additional hand if necessary. On the mountains of California, for example, this difficulty was often a very serious obstacle to the use of an otherwise desirable point ...
... remote localities, such as on the tops of high mountains, it was often difficult to subsist the attendant, and the employment of an additional hand if necessary. On the mountains of California, for example, this difficulty was often a very serious obstacle to the use of an otherwise desirable point ...
Galaxies
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
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.