Word Document - University of Iowa Astrophysics
... advantage of having the student actually look at some objects through the telescope, and extract some rough numbers. This lab exercise does not require a formal writeup. Data taking, drawings, and calculations are to be entered on this form and handed to the teaching assistant. However, you need to ...
... advantage of having the student actually look at some objects through the telescope, and extract some rough numbers. This lab exercise does not require a formal writeup. Data taking, drawings, and calculations are to be entered on this form and handed to the teaching assistant. However, you need to ...
Foreword - Peter Zamarovský
... able to count hundreds of thousands of them by now, in other words about a hundred times more than with the naked eye. Let’s try it with an even bigger telescope, one with an objective measuring 50 cm in diameter (a powerful amateur telescope or a regular professional instrument). Such a telescope c ...
... able to count hundreds of thousands of them by now, in other words about a hundred times more than with the naked eye. Let’s try it with an even bigger telescope, one with an objective measuring 50 cm in diameter (a powerful amateur telescope or a regular professional instrument). Such a telescope c ...
The Optical Design of the Background Emission Anisotropy Scanning Telescope
... In order to minimize sidelobe contamination and blockage, BEAST uses a Gregorian off-axis configuration fed by an array of eight horns on the focal plane. The primary mirror is an offaxis section of a paraboloid, and the secondary is an off-axis section of an ellipsoid. A spinning flat mirror locate ...
... In order to minimize sidelobe contamination and blockage, BEAST uses a Gregorian off-axis configuration fed by an array of eight horns on the focal plane. The primary mirror is an offaxis section of a paraboloid, and the secondary is an off-axis section of an ellipsoid. A spinning flat mirror locate ...
Activity 1 - Galaxies
... our eyes and can magnify the images they collect. This means they can see further into space and get more detailed images. Telescopes can be placed either on the ground or on satellites. The images collected by ground-based telescopes tend to be quite fuzzy because the Earth’s atmosphere dims, scatt ...
... our eyes and can magnify the images they collect. This means they can see further into space and get more detailed images. Telescopes can be placed either on the ground or on satellites. The images collected by ground-based telescopes tend to be quite fuzzy because the Earth’s atmosphere dims, scatt ...
The 1.5 meter solar telescope GREGOR
... instruments were installed in 2011, and the science verification started in spring of 2012. Delays with the telescope optics allowed installing and test parts of the focal-plane instruments, as well as the adaptive optics already in 2010. For these tests, a 1-meter mirror1 with the same focal length ...
... instruments were installed in 2011, and the science verification started in spring of 2012. Delays with the telescope optics allowed installing and test parts of the focal-plane instruments, as well as the adaptive optics already in 2010. For these tests, a 1-meter mirror1 with the same focal length ...
Ambiguity-preserving Generation with LFG
... The widespread ambiguity of natural language presents a particular challenge for machine translation. The translation of an ambiguous source sentence may depend on first determining which reading of the sentence is contextually appropriate and then producing a target sentence that accurately express ...
... The widespread ambiguity of natural language presents a particular challenge for machine translation. The translation of an ambiguous source sentence may depend on first determining which reading of the sentence is contextually appropriate and then producing a target sentence that accurately express ...
Astronomical Telescope
... of this hemisphere an infinite distance from the observer. This is, of course, an illusion since the Moon and stars are in reality at greatly differing distances away from us. However, the Celestial Sphere concept has its advantages in that it makes it easy to define coordinates for objects in the s ...
... of this hemisphere an infinite distance from the observer. This is, of course, an illusion since the Moon and stars are in reality at greatly differing distances away from us. However, the Celestial Sphere concept has its advantages in that it makes it easy to define coordinates for objects in the s ...
Economic Feasibility of a Siderostat-fed Liquid Mirror Telescope for
... ever larger apertures, astronomers have developed a number of technologies that could be used to reduce the cost of a large telescope dedicated to space surveillance. The costs of optical telescopes (not including the cost of instrumentation, which can itself be significant) have historically been do ...
... ever larger apertures, astronomers have developed a number of technologies that could be used to reduce the cost of a large telescope dedicated to space surveillance. The costs of optical telescopes (not including the cost of instrumentation, which can itself be significant) have historically been do ...
Wide field telescope using spherical mirrors
... 2) G. J. Hill, “Hobby-Eberly Telescope: instrumentation and current performance,” in Optical and IR Telescope Instrumentation and Detectors, M. Iye; A. Moorwood; eds., Proc. SPIE 4008, pp. 50-61, (2000). 3) P. Dierickx, B. Delabre, L. Noethe, “OWL optical design, active optics, and error budget,” in ...
... 2) G. J. Hill, “Hobby-Eberly Telescope: instrumentation and current performance,” in Optical and IR Telescope Instrumentation and Detectors, M. Iye; A. Moorwood; eds., Proc. SPIE 4008, pp. 50-61, (2000). 3) P. Dierickx, B. Delabre, L. Noethe, “OWL optical design, active optics, and error budget,” in ...
Globular Clusters - Lick Observatory
... M=absolute magnitude [the actual brightness] m=apparent [how bright the star appears to us] Ar=Extinction [amount of dust in-between us and our cluster] ...
... M=absolute magnitude [the actual brightness] m=apparent [how bright the star appears to us] Ar=Extinction [amount of dust in-between us and our cluster] ...
Answer to question 1 - Northwestern University
... “classical Cepheids”) and type II; Type I’s are about 4 times brighter for the same period and are found in young star groups called open clusters. Type II’s are also called WW Virginis stars are found in old star clusters called Globular clusters ...
... “classical Cepheids”) and type II; Type I’s are about 4 times brighter for the same period and are found in young star groups called open clusters. Type II’s are also called WW Virginis stars are found in old star clusters called Globular clusters ...
Ir(t) - IPAM
... R-squared: a statistical measure, between 0 and 1, shows fit between a model’s prediction and real values 0 means totally different, and 1 means perfect match We define T as the time when R-squared value starts to decrease continuously from 1 ...
... R-squared: a statistical measure, between 0 and 1, shows fit between a model’s prediction and real values 0 means totally different, and 1 means perfect match We define T as the time when R-squared value starts to decrease continuously from 1 ...
instructions
... received unusually rough handling in shipment, it is possible that the optics must be re-aligned for best optical performance. In any case this alignment procedure is simple, and requires only a few minutes the very first time the telescope is used. Please familiarize yourself with the following col ...
... received unusually rough handling in shipment, it is possible that the optics must be re-aligned for best optical performance. In any case this alignment procedure is simple, and requires only a few minutes the very first time the telescope is used. Please familiarize yourself with the following col ...
Your first - Kerry International Dark
... and the star Polaris. You should now align the diagram with the polar axis itself. Point the crosshairs in the reticule so they are on Polaris. Now unlock the polar axis and rotate it. If Polaris doesn’t move, your reticule and polar axis are already aligned and you don’t need to adjust it. If it do ...
... and the star Polaris. You should now align the diagram with the polar axis itself. Point the crosshairs in the reticule so they are on Polaris. Now unlock the polar axis and rotate it. If Polaris doesn’t move, your reticule and polar axis are already aligned and you don’t need to adjust it. If it do ...
Unit 5 – Space Exploration - Buck Mountain Central School
... An innovation for ground-based optical reflecting telescopes is the use of segmented mirrors (a segmented-mirror telescope uses several lightweight-segments to build one large mirror). Interferometry: Combining Telescopes for Greater Power. The technique of using a number of telescopes in combinatio ...
... An innovation for ground-based optical reflecting telescopes is the use of segmented mirrors (a segmented-mirror telescope uses several lightweight-segments to build one large mirror). Interferometry: Combining Telescopes for Greater Power. The technique of using a number of telescopes in combinatio ...
Chapter 4 Telescope Making Basics
... 4.2.1.1 The Primary Mirror There are five steps in the making the primary mirror: rough grinding, fine grinding, smoothing, and polishing/figuring. At every stage, the mirror-maker guides the process with specific tests. Rough grinding (sometimes called hogging) consists of systematically working a ...
... 4.2.1.1 The Primary Mirror There are five steps in the making the primary mirror: rough grinding, fine grinding, smoothing, and polishing/figuring. At every stage, the mirror-maker guides the process with specific tests. Rough grinding (sometimes called hogging) consists of systematically working a ...
February - Amateur Telescope Makers of Boston
... kilometers. This array of antennas is powerful enough to study molecular disks surrounding stars. The reflectors must be accurate parabolas to sub-millimeter dimensions. Angular resolutions in the sub arc seconds can be achieved with sufficient sensitivity and low noise to study the jansky level mic ...
... kilometers. This array of antennas is powerful enough to study molecular disks surrounding stars. The reflectors must be accurate parabolas to sub-millimeter dimensions. Angular resolutions in the sub arc seconds can be achieved with sufficient sensitivity and low noise to study the jansky level mic ...
Jan 2017 - Bays Mountain Park
... The $1 million original mission has been gathering observations since June. The satellite will likely burn up in Earth’s atmosphere in March. But the researchers have built a second one slated for launch in 2017. MinXSS-2 will watch long-term solar activity—related to the Sun’s 11-year sunspot cycle ...
... The $1 million original mission has been gathering observations since June. The satellite will likely burn up in Earth’s atmosphere in March. But the researchers have built a second one slated for launch in 2017. MinXSS-2 will watch long-term solar activity—related to the Sun’s 11-year sunspot cycle ...
*************DST
... complete retractable dome, adaptive optics and a pool of well established and new developed post focus instruments will replace the 45 cm Gregory Coudé telescope at the Teide Observatory on Tenerife which will be retired after 40 years of service. ...
... complete retractable dome, adaptive optics and a pool of well established and new developed post focus instruments will replace the 45 cm Gregory Coudé telescope at the Teide Observatory on Tenerife which will be retired after 40 years of service. ...
Precision engineering for astronomy
... and Lord Rosse were able to take advantage of their greater sensitivity and angular resolution to make key discoveries such as Uranus and the first detailed observations of the nebulae that we later came to realize were distant galaxies. In 1895, the world’s largest refractor, the Yerkes Observatory ...
... and Lord Rosse were able to take advantage of their greater sensitivity and angular resolution to make key discoveries such as Uranus and the first detailed observations of the nebulae that we later came to realize were distant galaxies. In 1895, the world’s largest refractor, the Yerkes Observatory ...
resolution, electromagnetic waves and binary stars
... What is the explanation for this? Well, stars emit electromagnetic waves at all wavelengths. However, depending on the temperature of the star there will be a more intense section of the electromagnetic spectrum where the star radiates, usually in the Infra-red, Visible or Ultraviolet regions. The h ...
... What is the explanation for this? Well, stars emit electromagnetic waves at all wavelengths. However, depending on the temperature of the star there will be a more intense section of the electromagnetic spectrum where the star radiates, usually in the Infra-red, Visible or Ultraviolet regions. The h ...
Chapter: Observing and Exploring Space Telescopes
... This is an ultraviolet image of the red supergiant star Betelgeuse taken with the Hubble Space Telescope in 1996. This was the first direct image taken of the disk of a star other than the Sun. Today, very few professional astronomers look directly through the eyepiece of a telescope. Instead, they ...
... This is an ultraviolet image of the red supergiant star Betelgeuse taken with the Hubble Space Telescope in 1996. This was the first direct image taken of the disk of a star other than the Sun. Today, very few professional astronomers look directly through the eyepiece of a telescope. Instead, they ...
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.