galileo_pdf - Creation Concepts
... "In theory, Galileo's discovery could have been made long before the telescope. All four moons -Ganymede, Callisto, Io, and Europa -- are bright enough to be seen with the naked eye ... [And] people have seen them. According to a manuscript unearthed ... in China, the astronomer Gan De noticed a 'sm ...
... "In theory, Galileo's discovery could have been made long before the telescope. All four moons -Ganymede, Callisto, Io, and Europa -- are bright enough to be seen with the naked eye ... [And] people have seen them. According to a manuscript unearthed ... in China, the astronomer Gan De noticed a 'sm ...
Astronomy (C) - North Carolina Science Olympiad
... • Medium mass stars: burn H, become red giant, separate into planetary nebula & white dwarf • Massive stars: burn H all the way to Fe, explode in supernova, leave behind remnant and either neutron star or black hole ...
... • Medium mass stars: burn H, become red giant, separate into planetary nebula & white dwarf • Massive stars: burn H all the way to Fe, explode in supernova, leave behind remnant and either neutron star or black hole ...
Characterization and Subtraction of Well
... of the Sun using the NICMOS infrared camera on the Hubble Space Telescope. The highly exposed images of each target star are subtracted from the NICMOS Camera 2 (NIC2) field using previously observed stars so that faint companions may be detected. We have characterized the NIC2 point-spread function ...
... of the Sun using the NICMOS infrared camera on the Hubble Space Telescope. The highly exposed images of each target star are subtracted from the NICMOS Camera 2 (NIC2) field using previously observed stars so that faint companions may be detected. We have characterized the NIC2 point-spread function ...
Astronomy - Career Account Web Pages
... The Universe's Most Ancient Object The farthest and one of the very earliest galaxies ever seen in the universe appears as a faint red blob in this ultra-deep–field exposure taken with NASA's Hubble Space Telescope. This is the deepest infrared image taken of the universe. Based on the object's colo ...
... The Universe's Most Ancient Object The farthest and one of the very earliest galaxies ever seen in the universe appears as a faint red blob in this ultra-deep–field exposure taken with NASA's Hubble Space Telescope. This is the deepest infrared image taken of the universe. Based on the object's colo ...
Ground-Based Astrometry 2010-2020
... the most intriguing sources, often at the faint limits of such surveys, from which the science is squeezed out when precise astrometric techniques are applied. We list here some of the most important questions that can be answered during the next decade by targeted optical, infrared, and radio astro ...
... the most intriguing sources, often at the faint limits of such surveys, from which the science is squeezed out when precise astrometric techniques are applied. We list here some of the most important questions that can be answered during the next decade by targeted optical, infrared, and radio astro ...
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.