Untitled - Cambridge University Library
... colours was the manner of Newton’s account of his experiments with prisms. This gave the impression of being a simple, historical narrative of actions, beginning early in 1666, that were both easy to perform and straightforward to repeat. But Newton was being disingenuous both in terms of historical ...
... colours was the manner of Newton’s account of his experiments with prisms. This gave the impression of being a simple, historical narrative of actions, beginning early in 1666, that were both easy to perform and straightforward to repeat. But Newton was being disingenuous both in terms of historical ...
2013 - Society for Astronomical Sciences
... angle), and continuing until First Quarter, or up to two days past First Quarter. Extending the run past First Quarter will depend on individual observer’s systems and how well each mitigates stray light from the sunlit part of the moon, so coverage will likely be less than ideal after First Quarter ...
... angle), and continuing until First Quarter, or up to two days past First Quarter. Extending the run past First Quarter will depend on individual observer’s systems and how well each mitigates stray light from the sunlit part of the moon, so coverage will likely be less than ideal after First Quarter ...
The science case for - Astrophysics
... to determine the global matter-energy content of our Universe. In the past halfcentury a new generation of telescopes and instruments allowed a golden age of remarkable new discoveries: quasars, masers, black holes, gravitational arcs, extrasolar planets, gamma ray bursts, the cosmic microwave backg ...
... to determine the global matter-energy content of our Universe. In the past halfcentury a new generation of telescopes and instruments allowed a golden age of remarkable new discoveries: quasars, masers, black holes, gravitational arcs, extrasolar planets, gamma ray bursts, the cosmic microwave backg ...
HH 222: A Giant Herbig-Haro Flow from the
... HH 1/2 flows. Its existence was apparently first commented upon in the literature by Cohen & Schwartz (1983). Interference filter images and spectra have demonstrated that HH 222 is a large emission line structure. The HH 222 core itself has many similarities to the many other Herbig-Haro (HH) flows ...
... HH 1/2 flows. Its existence was apparently first commented upon in the literature by Cohen & Schwartz (1983). Interference filter images and spectra have demonstrated that HH 222 is a large emission line structure. The HH 222 core itself has many similarities to the many other Herbig-Haro (HH) flows ...
The Unique Optical Design of the NESSI Survey Telescope
... strip of sky at 28deg N latitude as seen from Kitt Peak in Arizona. The telescope was designed by Harland Epps and built and operated by John McGraw and Roger Angel [1]. The CTI primary mirror was the proof of concept mirror for the NASA space telescope project. The mirror was never intended to fly ...
... strip of sky at 28deg N latitude as seen from Kitt Peak in Arizona. The telescope was designed by Harland Epps and built and operated by John McGraw and Roger Angel [1]. The CTI primary mirror was the proof of concept mirror for the NASA space telescope project. The mirror was never intended to fly ...
Collaborative Research Projects for Amateur Astronomers
... IRO Small Comet Search: Observational Summary The observations were made using the 0.5 m f/8 reflector of the Iowa Robotic Observatory between 24 September 1998 and 11 June 1999. Observations were scheduled every month within one week of new moon. A total of 6,148 images were obtained, of which ...
... IRO Small Comet Search: Observational Summary The observations were made using the 0.5 m f/8 reflector of the Iowa Robotic Observatory between 24 September 1998 and 11 June 1999. Observations were scheduled every month within one week of new moon. A total of 6,148 images were obtained, of which ...
Project T-REX: Italian technologies for E
... excursus and a technological excursus, which started with software development and has evolved into participation to project and realization of spectrographs for both ground based and space telescopes. Her participation to such activities have evolved from simple participant, to roles of increasing ...
... excursus and a technological excursus, which started with software development and has evolved into participation to project and realization of spectrographs for both ground based and space telescopes. Her participation to such activities have evolved from simple participant, to roles of increasing ...
Beyond Pluto: Exploring the outer limits of the solar - e
... appear as comets. However, in a world in which observational astronomy was still dominated by the photographic plate, the detection of such tiny objects remained impracticable. Of course, speculation about missing planets is not a new phenomenon. Ever since William Herschel’s discovery of Uranus in ...
... appear as comets. However, in a world in which observational astronomy was still dominated by the photographic plate, the detection of such tiny objects remained impracticable. Of course, speculation about missing planets is not a new phenomenon. Ever since William Herschel’s discovery of Uranus in ...
Differential measurement of atmospheric
... an all-reflecting Schmidt one and consists of three mirrors: a beam combiner, a flat-folding mirror and a spherical primary mirror, as shown in figure 2. The beam combiner is made from a polished zerodur blank, cut into two halves and reassembled with a wedge angle of 29 degree. The star light from two ...
... an all-reflecting Schmidt one and consists of three mirrors: a beam combiner, a flat-folding mirror and a spherical primary mirror, as shown in figure 2. The beam combiner is made from a polished zerodur blank, cut into two halves and reassembled with a wedge angle of 29 degree. The star light from two ...
2015 - Society for Astronomical Sciences
... The Hungaria have several characteristics that made them ideal for study, especially when using modest telescopes on the order of 0.2-0.5 m diameter. First, their orbital parameters mean that they are not subject to planetary tidal encounters. Second, they are all relatively small, the largest membe ...
... The Hungaria have several characteristics that made them ideal for study, especially when using modest telescopes on the order of 0.2-0.5 m diameter. First, their orbital parameters mean that they are not subject to planetary tidal encounters. Second, they are all relatively small, the largest membe ...
Project_Description2
... of the optical-UV to the near IR (although there is a significant drop in the 700-900nm region), and it develops a native layer that enables it to survive for 2-3 years before recoating is necessary. However, in modern 3-mirror telescopes, a 10% loss at each surface degrades throughput by nearly 30% ...
... of the optical-UV to the near IR (although there is a significant drop in the 700-900nm region), and it develops a native layer that enables it to survive for 2-3 years before recoating is necessary. However, in modern 3-mirror telescopes, a 10% loss at each surface degrades throughput by nearly 30% ...
Understanding Resolution
... aperture and the wavelength of the light observed. As aperture increases, angular size of the Airy disk decreases. Also, the size of the Airy disk varies as wavelength varies. Second, the magnitude of the observed star has an affect on the appearance of the Airy disk. A very bright star puts so much ...
... aperture and the wavelength of the light observed. As aperture increases, angular size of the Airy disk decreases. Also, the size of the Airy disk varies as wavelength varies. Second, the magnitude of the observed star has an affect on the appearance of the Airy disk. A very bright star puts so much ...
2009 THE INTERNATIONAL YEAR OF ASTRONOMY
... Copernican revolution and mark the beginning of the modern era of empirical scientific research. The aim of the IYA2009 is to stimulate worldwide interest, especially among young people, in astronomy and science under the central theme “The Universe, Yours to Discover”; it will be a global celebrati ...
... Copernican revolution and mark the beginning of the modern era of empirical scientific research. The aim of the IYA2009 is to stimulate worldwide interest, especially among young people, in astronomy and science under the central theme “The Universe, Yours to Discover”; it will be a global celebrati ...
Catch an Asteroid - Odysseus Contest
... Matsuyama asteroid and the image processing. Our leader, Doctor Radeva, taught us how to work with big, professional telescope and CCD equipment for obtaining of digital astronomical images. We “explored” the different astronomical software products and processed our asteroid images with them. We ar ...
... Matsuyama asteroid and the image processing. Our leader, Doctor Radeva, taught us how to work with big, professional telescope and CCD equipment for obtaining of digital astronomical images. We “explored” the different astronomical software products and processed our asteroid images with them. We ar ...
Horace Welcome Babcock - National Academy of Sciences
... faint nebulae it would seem advantageous to filter out the ultraviolet light.” Perhaps because of their UV observations, the Palomar high command decided not to try to include that spectral region in the Palomar Sky Survey to be conducted by the 48-inch Schmidt telescope. Consequently, the Schmidt c ...
... faint nebulae it would seem advantageous to filter out the ultraviolet light.” Perhaps because of their UV observations, the Palomar high command decided not to try to include that spectral region in the Palomar Sky Survey to be conducted by the 48-inch Schmidt telescope. Consequently, the Schmidt c ...
Observing Titan with amateur equipment
... known as the ‘61-inch’) was erected by the discoverer of Titan’s atmosphere primarily to perform a survey of the lunar surface in preparation for the Apollo landings. These days it is relatively undersubscribed, and thus not difficult to obtain time for modest projects such as Titan photometry. Acce ...
... known as the ‘61-inch’) was erected by the discoverer of Titan’s atmosphere primarily to perform a survey of the lunar surface in preparation for the Apollo landings. These days it is relatively undersubscribed, and thus not difficult to obtain time for modest projects such as Titan photometry. Acce ...
Report from the Subaru Telescope for External
... efficiency. The telescope has a delicate balance and extremely high tracking accuracy, which have been continuously improved as a result of staff members' dedicated efforts. The prime focus camera Suprime-Cam has been providing unique capabilities among 8–10 m class telescopes, allowing observers to ...
... efficiency. The telescope has a delicate balance and extremely high tracking accuracy, which have been continuously improved as a result of staff members' dedicated efforts. The prime focus camera Suprime-Cam has been providing unique capabilities among 8–10 m class telescopes, allowing observers to ...
Combating Mirror Seeing
... Zerodur will equalize 1.1x faster than Borofloat when both are the same thickness, say 25mm. Although aluminum is denser than both Zerodur and Borofloat, as well as being quite close to both in heat capacity, it has far superior thermal conductivity. In the same thickness aluminum will equalize 95.7 ...
... Zerodur will equalize 1.1x faster than Borofloat when both are the same thickness, say 25mm. Although aluminum is denser than both Zerodur and Borofloat, as well as being quite close to both in heat capacity, it has far superior thermal conductivity. In the same thickness aluminum will equalize 95.7 ...
Document
... appear yellow/orange or even reddish in true-color photographs. The dearth of gas and dust is consistent with this composition: There is insufficient raw material from which new stars can ...
... appear yellow/orange or even reddish in true-color photographs. The dearth of gas and dust is consistent with this composition: There is insufficient raw material from which new stars can ...
The universe of the coming ALMA revolution
... entire spectrum. The universe emits light in every invisible color, from radio waves to gamma rays, and studies conducted within each band of the spectrum contribute uniquely to our understanding. Only now has technology caught up with the dream of opening up a rich new vein of the spectrum to high- ...
... entire spectrum. The universe emits light in every invisible color, from radio waves to gamma rays, and studies conducted within each band of the spectrum contribute uniquely to our understanding. Only now has technology caught up with the dream of opening up a rich new vein of the spectrum to high- ...
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.