THE PERIOD OF ROTATION OF THE SUN
... digitally and can display the data as a chart record or as sound. VIREO simulates modern astronomical observation by accessing a number of databases, both on-line and in data files provided with the software. The basic VIREO database includes data from the Hubble Guide Star Catalog (about 16 million ...
... digitally and can display the data as a chart record or as sound. VIREO simulates modern astronomical observation by accessing a number of databases, both on-line and in data files provided with the software. The basic VIREO database includes data from the Hubble Guide Star Catalog (about 16 million ...
An Expanded View of the Universe
... glass with silver became feasible. This paved the way for the first modern telescopes, such as the Hooker 2.5-metre telescope (1917) and the Hale 5-metre telescope (1948). With the new giant telescopes also came the next revolution in knowledge: the Sun, the most prominent object in the sky, was dow ...
... glass with silver became feasible. This paved the way for the first modern telescopes, such as the Hooker 2.5-metre telescope (1917) and the Hale 5-metre telescope (1948). With the new giant telescopes also came the next revolution in knowledge: the Sun, the most prominent object in the sky, was dow ...
Observing Titan with amateur equipment
... providing a standard wavelength for measurement, but also in minimising the sky absorption due to atmospheric water vapour. Unfortunately, 8-12 inch telescopes do not gather enough light for this instrument to give robust results - recall that the flux falls off rapidly with wavelength. We have used ...
... providing a standard wavelength for measurement, but also in minimising the sky absorption due to atmospheric water vapour. Unfortunately, 8-12 inch telescopes do not gather enough light for this instrument to give robust results - recall that the flux falls off rapidly with wavelength. We have used ...
ESA BR-170 - ESA Science
... 1650 Bishop Ussher had famously calculated the date of creation as 4004 BC. The first to recognise the true age of the Earth was a Scottish physician called James Hutton, an amateur geologist, who, in 1790, realised from his study of rock formations that the Earth had to be much older. It was so man ...
... 1650 Bishop Ussher had famously calculated the date of creation as 4004 BC. The first to recognise the true age of the Earth was a Scottish physician called James Hutton, an amateur geologist, who, in 1790, realised from his study of rock formations that the Earth had to be much older. It was so man ...
Missions
... All types of light are ‘electromagnetic radiation’. Electromagnetic radiation propagates through space as a wave. Although this wave always travels at the same speed in a vacuum (the famous speed of light, 300 000 kilometres per second), some of its characteristics vary depending on its energy. Ultr ...
... All types of light are ‘electromagnetic radiation’. Electromagnetic radiation propagates through space as a wave. Although this wave always travels at the same speed in a vacuum (the famous speed of light, 300 000 kilometres per second), some of its characteristics vary depending on its energy. Ultr ...
3. The MONS Telescope requirements
... Spacecraft jitter (attitude movements) will have a dramatic effect on the photometric precision if one does not design the instrument, telescope and platform carefully. This is because there will be small variations on the sensitivity of the CCD from pixel to pixel and even within each pixel. Most o ...
... Spacecraft jitter (attitude movements) will have a dramatic effect on the photometric precision if one does not design the instrument, telescope and platform carefully. This is because there will be small variations on the sensitivity of the CCD from pixel to pixel and even within each pixel. Most o ...
Antares Palette - RASC Kingston Centre
... that harbour exoplanets in the Kepler dataset? A team led by Dr. Elliott Horch of Southern Connecticut State University has shown that exoplanets are just as likely to be part of a binary system as the larger part of the stellar universe—about 40 to 50 percent. The team’s study made use of the high ...
... that harbour exoplanets in the Kepler dataset? A team led by Dr. Elliott Horch of Southern Connecticut State University has shown that exoplanets are just as likely to be part of a binary system as the larger part of the stellar universe—about 40 to 50 percent. The team’s study made use of the high ...
Jacaranda Physics 1 2E Chapter 1
... 1. its location — where it is in relation to the mirror 2. its size — how big it is compared with the object 3. its orientation — whether it is upright or upside down 4. its nature — whether or not the image can be captured on a screen. Figure 1.12 shows how the image that we see of a cat is formed. ...
... 1. its location — where it is in relation to the mirror 2. its size — how big it is compared with the object 3. its orientation — whether it is upright or upside down 4. its nature — whether or not the image can be captured on a screen. Figure 1.12 shows how the image that we see of a cat is formed. ...
Near-Earth Asteroid Search Programs
... scans produced images with minimal pixel-to-pixel (flatfield) variation, and readout overhead was limited to rampup and ramp-down fields at either end. The data rate was well matched to the capabilities of the processing equipment available at the time. The use of CCDs enabled much more sensitive se ...
... scans produced images with minimal pixel-to-pixel (flatfield) variation, and readout overhead was limited to rampup and ramp-down fields at either end. The data rate was well matched to the capabilities of the processing equipment available at the time. The use of CCDs enabled much more sensitive se ...
How We See The Sky
... Diffraction places a limit on the resolution of an optical system. As detail becomes smaller, diffraction has a proportionally stronger “smearing” effect (failure to fully “transfer” scene contrast), diminishing the ability of the optical system to resolve fine detail. High MTF at low contrast level ...
... Diffraction places a limit on the resolution of an optical system. As detail becomes smaller, diffraction has a proportionally stronger “smearing” effect (failure to fully “transfer” scene contrast), diminishing the ability of the optical system to resolve fine detail. High MTF at low contrast level ...
The History of Infrared Spectroscopy
... The development of spectroscopy is inextricably linked with advances in the theory of light, refraction, and diffraction that began in the mid-17th century. Before this time, it was believed that a prism added color to incoming light. However, Sir Isaac Newton conducted a famous experiment in 1666 i ...
... The development of spectroscopy is inextricably linked with advances in the theory of light, refraction, and diffraction that began in the mid-17th century. Before this time, it was believed that a prism added color to incoming light. However, Sir Isaac Newton conducted a famous experiment in 1666 i ...
I N S T
... Sun Menu ................................................................................................................................................................................................................. 24 Scrolling Menu ............................................................... ...
... Sun Menu ................................................................................................................................................................................................................. 24 Scrolling Menu ............................................................... ...
View the sky`s greatest nebula
... and detailed. Las Vegas astrophotographer George Greaney shot it with his 6-inch Astro-Physics EDF apochromatic refractor at f/7. This image is a digital composite of two 45-minute exposures on hypered 120-format Kodak PPF Pro 400 film. ...
... and detailed. Las Vegas astrophotographer George Greaney shot it with his 6-inch Astro-Physics EDF apochromatic refractor at f/7. This image is a digital composite of two 45-minute exposures on hypered 120-format Kodak PPF Pro 400 film. ...
The Galactic Center with Gemini
... Gemini North: Early science with “visitor” instruments Why? Very late delivery of facility instruments ...
... Gemini North: Early science with “visitor” instruments Why? Very late delivery of facility instruments ...
NexStar GT - Celestron
... location entered. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. ...
... location entered. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. ...
Direct Imaging of Exoplanets - American Museum of Natural History
... and spectra of exoplanet systems. For this information, planets around nearby stars will be essential, because these systems will have larger apparent sizes and photon fluxes than more distant systems, and will therefore be relatively accessible to the techniques in this chapter. A combination of as ...
... and spectra of exoplanet systems. For this information, planets around nearby stars will be essential, because these systems will have larger apparent sizes and photon fluxes than more distant systems, and will therefore be relatively accessible to the techniques in this chapter. A combination of as ...
Electronic version
... held in Asia, coming a dozen years after one hosted by India in 1985. This fact may seem somewhat strange. It seems particularly remarkable to me as a Japanese person, given my country's recognized scientific contributions in the fields of theoretical astrophysics, space sciences (including X-ray as ...
... held in Asia, coming a dozen years after one hosted by India in 1985. This fact may seem somewhat strange. It seems particularly remarkable to me as a Japanese person, given my country's recognized scientific contributions in the fields of theoretical astrophysics, space sciences (including X-ray as ...
Instruction Manual #11007 / #11008 / #11009 ®
... The CPC is controlled by Celestron’s NexStar hand controller designed to give you instant access to all the functions the CPC has to offer. With automatic slewing to over 40,000 objects, and common sense menu descriptions, even a beginner can master its variety of features in just a few observing se ...
... The CPC is controlled by Celestron’s NexStar hand controller designed to give you instant access to all the functions the CPC has to offer. With automatic slewing to over 40,000 objects, and common sense menu descriptions, even a beginner can master its variety of features in just a few observing se ...
nexstar_gt_60,80114.. - Downloads
... location entered. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. ...
... location entered. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. ...
comet panstarrs
... Tammy is a professional astronomy author, President Emeritus of Warren Rupp Observatory and retired Astronomical League Executive Secretary. She was the first woman astronomer to achieve Comet Hunter’s Gold Status. ...
... Tammy is a professional astronomy author, President Emeritus of Warren Rupp Observatory and retired Astronomical League Executive Secretary. She was the first woman astronomer to achieve Comet Hunter’s Gold Status. ...
Hidden57_rf
... Universe was limited by our eyes and the thoughts that sprung from considering what they could see. The huge leap in capability that even such a simple instrument could realise set us on the path of creating ever more powerful instruments to satisfy our voracious appetite for knowledge. Nonetheless, ...
... Universe was limited by our eyes and the thoughts that sprung from considering what they could see. The huge leap in capability that even such a simple instrument could realise set us on the path of creating ever more powerful instruments to satisfy our voracious appetite for knowledge. Nonetheless, ...
Exploring the Universe
... telescopes QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture. ...
... telescopes QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture. ...
Night Sky Observations
... some even contribute towards professional research, (though not necessarily getting paid for it). Many amateurs begin their interest in the hobby through Sky Watching, and some even become specialized in it. Professional astronomy is chosen by those who want to make it their career: they study it at ...
... some even contribute towards professional research, (though not necessarily getting paid for it). Many amateurs begin their interest in the hobby through Sky Watching, and some even become specialized in it. Professional astronomy is chosen by those who want to make it their career: they study it at ...
History of the telescope
The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey. Among many others who claimed to have made the discovery were Zacharias Janssen, a spectacle-maker in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex objective lens and a concave eyepiece. Galileo used this design the following year. In 1611, Johannes Kepler described how a telescope could be made with a convex objective lens and a convex eyepiece lens and by 1655 astronomers such as Christiaan Huygens were building powerful but unwieldy Keplerian telescopes with compound eyepieces. Hans Lippershey is the earliest person documented to have applied for a patent for the device.Isaac Newton is credited with building the first ""practical"" reflector in 1668 with a design that incorporated a small flat diagonal mirror to reflect the light to an eyepiece mounted on the side of the telescope. Laurent Cassegrain in 1672 described the design of a reflector with a small convex secondary mirror to reflect light through a central hole in the main mirror.The achromatic lens, which greatly reduced color aberrations in objective lenses and allowed for shorter and more functional telescopes, first appeared in a 1733 telescope made by Chester Moore Hall, who did not publicize it. John Dollond learned of Hall's invention and began producing telescopes using it in commercial quantities, starting in 1758.Important developments in reflecting telescopes were John Hadley's production of larger paraboloidal mirrors in 1721; the process of silvering glass mirrors introduced by Léon Foucault in 1857; and the adoption of long lasting aluminized coatings on reflector mirrors in 1932. Almost all of the large optical research telescopes used today are reflectors.The era of radio telescopes (along with radio astronomy) was born with Karl Guthe Jansky's serendipitous discovery of an astronomical radio source in 1931. Many types of telescopes were developed in the 20th century for a wide range of wavelengths from radio to gamma-rays.