Optics Education in the International Year of Astronomy
... science through the excitement of astronomy and sky-observing experiences. To achieve this goal, one objective will be to enable as many people as possible, especially children, to look at the sky through a telescope and gain a basic understanding of the Universe at least one time during the year. A ...
... science through the excitement of astronomy and sky-observing experiences. To achieve this goal, one objective will be to enable as many people as possible, especially children, to look at the sky through a telescope and gain a basic understanding of the Universe at least one time during the year. A ...
Phoenix Newsletter â Issue 11, April 2015
... SI units, the GMT’s drive power was only 0.94 watt*, and most of that power would normally be dissipated by friction in the governor. This figure looks very low, until we remember that ordinary mechanical clocks and watches run at powers typically in the microwatt to nanowatt range. We once suspecte ...
... SI units, the GMT’s drive power was only 0.94 watt*, and most of that power would normally be dissipated by friction in the governor. This figure looks very low, until we remember that ordinary mechanical clocks and watches run at powers typically in the microwatt to nanowatt range. We once suspecte ...
May 2015 - Hermanus Astronomy
... cosmology is how such massive structures assembled in the early universe. Astronomers have found objects in the distant universe seen at a time when it was only 3 billion years old that could be precursors of the clusters seen around us today. Herschel revealed that the vast majority of Planck-detec ...
... cosmology is how such massive structures assembled in the early universe. Astronomers have found objects in the distant universe seen at a time when it was only 3 billion years old that could be precursors of the clusters seen around us today. Herschel revealed that the vast majority of Planck-detec ...
Lecture 7
... very faintly, because of cosmic rays hitting it, ions recombining, and chemical reactions. And, when the moon is around, the sky is very bright, because moonlight gets scattered around. So, groundbased observations are ultimately limited by the background. Solution – go to spa ...
... very faintly, because of cosmic rays hitting it, ions recombining, and chemical reactions. And, when the moon is around, the sky is very bright, because moonlight gets scattered around. So, groundbased observations are ultimately limited by the background. Solution – go to spa ...
2012-13_1st_Sem_Final_ SG
... want to take an image of an object with infrared light and also visible light? What would be the use of looking at something with both kinds of light? Filters (Chp 3 pp 44-49; Class handouts/activities) Can you explain how a filter interacts with light? Can you identify which part of the picture sho ...
... want to take an image of an object with infrared light and also visible light? What would be the use of looking at something with both kinds of light? Filters (Chp 3 pp 44-49; Class handouts/activities) Can you explain how a filter interacts with light? Can you identify which part of the picture sho ...
Loan-A-Scope Program FAQ
... moving the telescope towards the sun. Do not leave the telescope setup where the sun could enter the scope optics at a later time, as this can cause damage. These telescopes are only capable of observing the sunspots and faculae, they will not show prominences or flares. To observe those requires sp ...
... moving the telescope towards the sun. Do not leave the telescope setup where the sun could enter the scope optics at a later time, as this can cause damage. These telescopes are only capable of observing the sunspots and faculae, they will not show prominences or flares. To observe those requires sp ...
Solar space instrumentations and techniques
... • Wavelength range: CCDs can have a wide wavelength range ranging from about 400nm (blue) to about 1050nm (Infra-red) with a peak sensitivity at around 700nm. However, using a process known as backthinning, it is possible to extend the wavelength range of a CCD down into shorter wavelengths such as ...
... • Wavelength range: CCDs can have a wide wavelength range ranging from about 400nm (blue) to about 1050nm (Infra-red) with a peak sensitivity at around 700nm. However, using a process known as backthinning, it is possible to extend the wavelength range of a CCD down into shorter wavelengths such as ...
Portable Speckle Interferometry Camera Checkout at Kitt Peak
... yield dynamical masses, while photometry of the components restrains astrophysical models. Both are vital to understanding stellar evolution. Speckle interferometry, which is telescope resolution limited as opposed to seeing limited, allows observation of close, short-period binaries. A portable, lo ...
... yield dynamical masses, while photometry of the components restrains astrophysical models. Both are vital to understanding stellar evolution. Speckle interferometry, which is telescope resolution limited as opposed to seeing limited, allows observation of close, short-period binaries. A portable, lo ...
Make your own telescope
... Each child makes his or her own telescope. The children complete Task 2 on the worksheet. Help the children as they draw the design for their telescope. When all the drawings are completed, encourage the children to show them to rest of the class. Discuss them together and provide comments. Can anyt ...
... Each child makes his or her own telescope. The children complete Task 2 on the worksheet. Help the children as they draw the design for their telescope. When all the drawings are completed, encourage the children to show them to rest of the class. Discuss them together and provide comments. Can anyt ...
Exoplanet, 51 Pegasi b, Solar System, VLT, La Silla. ESOcast
... star’s spectrum, which extremely sensitive spectrographs such as ESO’s HARPS can detect through radial velocity tracking. ...
... star’s spectrum, which extremely sensitive spectrographs such as ESO’s HARPS can detect through radial velocity tracking. ...
PDF
... Since the first extrasolar planet was discovered by Mayor & Queloz (1995), various techniques have been used to infer the presence of large planets, but none have the capability to image Earth-like planets directly. Finding terrestrial planets is difficult because the difference in brightness betwee ...
... Since the first extrasolar planet was discovered by Mayor & Queloz (1995), various techniques have been used to infer the presence of large planets, but none have the capability to image Earth-like planets directly. Finding terrestrial planets is difficult because the difference in brightness betwee ...
Telescopes
... Foci exist Telescope – Device used to detect light from a distance source o Optical telescope – Detects visible light only Reflecting telescope – Uses mirrors Refracting telescope – Uses lenses o Reflecting telescopes are much better than refracting telescopes Glass won’t sag under its own w ...
... Foci exist Telescope – Device used to detect light from a distance source o Optical telescope – Detects visible light only Reflecting telescope – Uses mirrors Refracting telescope – Uses lenses o Reflecting telescopes are much better than refracting telescopes Glass won’t sag under its own w ...
Wide-Field Optical Spectrometer (WFOS)
... spectral resolution and multiplexing capability through the use of conventional ruled reflection gratings on each wavelength channel of the instrument. In the lowest-dispersion mode (R=1000) the necessary wavelength coverage is obtained with a single spectral order for each wavelength channel, so th ...
... spectral resolution and multiplexing capability through the use of conventional ruled reflection gratings on each wavelength channel of the instrument. In the lowest-dispersion mode (R=1000) the necessary wavelength coverage is obtained with a single spectral order for each wavelength channel, so th ...
3.4 Why compasses don`t point north
... One-star alignment is rarely a good choice; it relies on perfect leveling of the tripod and accurate site data. Normally, if you can find one star, you can find two and get much better results. Zero-star alignment exists only unofficially; manufacturers do not recommend it, but it is sometimes the b ...
... One-star alignment is rarely a good choice; it relies on perfect leveling of the tripod and accurate site data. Normally, if you can find one star, you can find two and get much better results. Zero-star alignment exists only unofficially; manufacturers do not recommend it, but it is sometimes the b ...
Lecture17 - UMD Physics
... Zacharias Jansen, in Middleburg, Holland, around the year 1595. Since Zacharias was very young at that time, it's possible that his father Hans made the first one, but young Zach took over the production. Details about these first Jansen microscopes are not clear, but there is some evidence which al ...
... Zacharias Jansen, in Middleburg, Holland, around the year 1595. Since Zacharias was very young at that time, it's possible that his father Hans made the first one, but young Zach took over the production. Details about these first Jansen microscopes are not clear, but there is some evidence which al ...
Buying A Telescope
... top of the line Obsession, Starsplitter, and Starmaster telescopes on the web. You place an order for one, specify custom parts like focusers, mirror vendors, and setting circles (a digital way to find objects in the sky when connected to a computer), and these firms custom build it for you. It may ...
... top of the line Obsession, Starsplitter, and Starmaster telescopes on the web. You place an order for one, specify custom parts like focusers, mirror vendors, and setting circles (a digital way to find objects in the sky when connected to a computer), and these firms custom build it for you. It may ...
Name: Block______ TELESCOPES: Knowledge and Understanding
... How are visible light, radio waves, and other forms of electromagnetic radiation different from each other? How does the size of the telescope’s main lens or mirror affect its performance? III. EXPLAIN: Complete the following using appropriate scientific language (vocabulary): Why are some telescope ...
... How are visible light, radio waves, and other forms of electromagnetic radiation different from each other? How does the size of the telescope’s main lens or mirror affect its performance? III. EXPLAIN: Complete the following using appropriate scientific language (vocabulary): Why are some telescope ...
Hubble Error: Time, Money and Millionths of an inch
... brought in a cot and set it up in a trailer in the parking lot. Opticians traditionally did their work with a kind of black magic, even rubbing their thumbs along a lens or minor to apply the finishing touch. But unlike other Old World opticians in the industry, Geissler fully embraced the idea that ...
... brought in a cot and set it up in a trailer in the parking lot. Opticians traditionally did their work with a kind of black magic, even rubbing their thumbs along a lens or minor to apply the finishing touch. But unlike other Old World opticians in the industry, Geissler fully embraced the idea that ...
astep - Institut d`Astrophysique de Paris
... The future of transit searches Combined to radial-velocimetry, it is the only way to determine the density, hence the global composition of a planet Transit spectroscopy offers additional possibilities not accessible for “normal” planets ...
... The future of transit searches Combined to radial-velocimetry, it is the only way to determine the density, hence the global composition of a planet Transit spectroscopy offers additional possibilities not accessible for “normal” planets ...
Hubble - STScI
... Astronomers using ground-based telescopes to hunt for planets outside our solar system, dubbed extrasolar planets, have nabbed more than 100 alien worlds. But they needed the keen “eye” of Hubble to make the first direct measurement of the chemical makeup of an extrasolar planet's atmosphere. The te ...
... Astronomers using ground-based telescopes to hunt for planets outside our solar system, dubbed extrasolar planets, have nabbed more than 100 alien worlds. But they needed the keen “eye” of Hubble to make the first direct measurement of the chemical makeup of an extrasolar planet's atmosphere. The te ...
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.