How to Become a Planet Hunter-Careers in
... How Much Wobble? It can be measured with an accuracy of about 1 μas (quite a bit thinner than the line plotted here). “The wobble effect”: our Solar System as seen at 10 pc distance ...
... How Much Wobble? It can be measured with an accuracy of about 1 μas (quite a bit thinner than the line plotted here). “The wobble effect”: our Solar System as seen at 10 pc distance ...
Measuring Our Universe
... Wilhelm Bessel obtained a very accurate parallax of 0.314 arcseconds (10.4 light-years) for the star 61 Cygni. Shortly thereafter in 1839, Thomas Henderson published his parallax of Alpha Centauri, 0.75 arcseconds (4.3 light-years). These successful measurements of stellar parallaxes encouraged obse ...
... Wilhelm Bessel obtained a very accurate parallax of 0.314 arcseconds (10.4 light-years) for the star 61 Cygni. Shortly thereafter in 1839, Thomas Henderson published his parallax of Alpha Centauri, 0.75 arcseconds (4.3 light-years). These successful measurements of stellar parallaxes encouraged obse ...
- National Optical Astronomy Observatory
... To determine the magnitudes of the other cluster members, NGC1496-22 was used as a reference in both filters. Star 22 was chosen because its magnitude was known from the WEBDA site; however, the software should calculate the same magnitudes for the entire data set if any other reference star had be ...
... To determine the magnitudes of the other cluster members, NGC1496-22 was used as a reference in both filters. Star 22 was chosen because its magnitude was known from the WEBDA site; however, the software should calculate the same magnitudes for the entire data set if any other reference star had be ...
April 2006 Newsletter PDF - Cowichan Valley Starfinders Society
... of the speed at which individual stars are coming directly toward or moving directly away from Earth. This measure is called the radial velocity, and can be determined very accurately with the spectrographs of major instruments such as the 10-meter Keck-II telescope, which was used in the study. Of ...
... of the speed at which individual stars are coming directly toward or moving directly away from Earth. This measure is called the radial velocity, and can be determined very accurately with the spectrographs of major instruments such as the 10-meter Keck-II telescope, which was used in the study. Of ...
The production and updating of experimental results
... the molecules themselves. To reach this objective, it was necessary to produce a beam of electrons that all moved at the same velocity and hence had the same energy. It was necessary to arrange for them to collide with one target molecule only before entering the detector, otherwise the sought-for i ...
... the molecules themselves. To reach this objective, it was necessary to produce a beam of electrons that all moved at the same velocity and hence had the same energy. It was necessary to arrange for them to collide with one target molecule only before entering the detector, otherwise the sought-for i ...
what`s up this month – march 2016
... New Moon will be on the 9th March First Quarter will be on 15th March Full Moon will be on 23rd March Last Quarter will be on 31st March The Moon is the easiest astronomical object to image and would normally the first target for anyone wanting to use a camera with a telescope. A standard DSLR camer ...
... New Moon will be on the 9th March First Quarter will be on 15th March Full Moon will be on 23rd March Last Quarter will be on 31st March The Moon is the easiest astronomical object to image and would normally the first target for anyone wanting to use a camera with a telescope. A standard DSLR camer ...
Supplemental Educational Support Materials
... Xena and Pluto are similar in size. Xena is only slightly larger than Pluto. They both reside in the Kuiper Belt, so they probably have similar makeups – chunks of ice and rock. The pair has differences, too. Xena is more than three times farther from the Sun than Pluto. Xena also takes more than tw ...
... Xena and Pluto are similar in size. Xena is only slightly larger than Pluto. They both reside in the Kuiper Belt, so they probably have similar makeups – chunks of ice and rock. The pair has differences, too. Xena is more than three times farther from the Sun than Pluto. Xena also takes more than tw ...
Exam # 2 – Tue 11/08/2011
... 7. A photon produced in the center of the Sun takes _________ to reach the surface. A. 8.3 minutes B. 1,000 minutes C. 1,000 years D. 100,000 years E. 10,000,000 years 8. Blackbody radiation is: A. continuous B. due to the thermal motion of electrons, which emit photons C. confined to a few specific ...
... 7. A photon produced in the center of the Sun takes _________ to reach the surface. A. 8.3 minutes B. 1,000 minutes C. 1,000 years D. 100,000 years E. 10,000,000 years 8. Blackbody radiation is: A. continuous B. due to the thermal motion of electrons, which emit photons C. confined to a few specific ...
Astrophotography
Astrophotography is a specialized type of photography for recording images of astronomical objects and large areas of the night sky. The first photograph of an astronomical object (the Moon) was taken in 1840, but it was not until the late 19th century that advances in technology allowed for detailed stellar photography. Besides being able to record the details of extended objects such as the Moon, Sun, and planets, astrophotography has the ability to image objects invisible to the human eye such as dim stars, nebulae, and galaxies. This is done by long time exposure since both film and digital cameras can accumulate and sum light photons over these long periods of time. Photography revolutionized the field of professional astronomical research, with long time exposures recording hundreds of thousands of new stars and nebulae that were invisible to the human eye, leading to specialized and ever larger optical telescopes that were essentially big cameras designed to collect light to be recorded on film. Direct astrophotography had an early role in sky surveys and star classification but over time it has given way to more sophisticated equipment and techniques designed for specific fields of scientific research, with film (and later astronomical CCD cameras) becoming just one of many forms of sensor.Astrophotography is a large sub-discipline in amateur astronomy where it is usually used to record aesthetically pleasing images, rather than for scientific research, with a whole range of equipment and techniques dedicated to the activity.