Development of a Software Package for the Reduction and Analysis
... This work represents a detailed study of the development of a software package, SPARVM, for the reduction and analysis of meteor videos. The uncertainty in determining the position of a meteor was computed to be 0.2−3.0 pixels, with a median value of 0.3 pixels. Sub-pixel accuracy (0.2−0.5 pixels) w ...
... This work represents a detailed study of the development of a software package, SPARVM, for the reduction and analysis of meteor videos. The uncertainty in determining the position of a meteor was computed to be 0.2−3.0 pixels, with a median value of 0.3 pixels. Sub-pixel accuracy (0.2−0.5 pixels) w ...
Abstract The Star Formation History of Low Surface Brightness Galaxies
... poorly constrained. These objects tend to be rather blue, contradicting the initial impression that they may simply be faded remnants of higher surface brightness galaxies whose star formation has finished. Other scenarios span a broad range: a young mean age, less dust, a lower metallicity, perhaps ...
... poorly constrained. These objects tend to be rather blue, contradicting the initial impression that they may simply be faded remnants of higher surface brightness galaxies whose star formation has finished. Other scenarios span a broad range: a young mean age, less dust, a lower metallicity, perhaps ...
harlow shapley - National Academy of Sciences
... intrinsic brightness of our sun. Many astronomers doubted the validity of this conclusion, and there were several who advocated median intrinsic brightnesses one-tenth or less of Shapley's values. A fierce debate ensued. George Ellery Hale, then the Director of Mount Wilson Observatory, who was also ...
... intrinsic brightness of our sun. Many astronomers doubted the validity of this conclusion, and there were several who advocated median intrinsic brightnesses one-tenth or less of Shapley's values. A fierce debate ensued. George Ellery Hale, then the Director of Mount Wilson Observatory, who was also ...
2012 December Vol. 49 No 584
... call them, the ‘fuzzies’. I was indebted to Ian Bruce and Brian Colthorpe for looking after us as their observatories. However for several people present it was also their first chance to try their hand at observing a whole range of such objects and of considerable variation in difficulty for the vi ...
... call them, the ‘fuzzies’. I was indebted to Ian Bruce and Brian Colthorpe for looking after us as their observatories. However for several people present it was also their first chance to try their hand at observing a whole range of such objects and of considerable variation in difficulty for the vi ...
Observational Studies of Interacting Galaxies and the Development
... we worked on together. I have learned a lot from you, including how to conduct observations, reduce data and write papers, etc. Suresh, I owe you a big thank for helping me in instrument developments. I have learned basic optics, experimental techniques and trouble shooting from you. I really enjoye ...
... we worked on together. I have learned a lot from you, including how to conduct observations, reduce data and write papers, etc. Suresh, I owe you a big thank for helping me in instrument developments. I have learned basic optics, experimental techniques and trouble shooting from you. I really enjoye ...
Worlds Beyond The Poles
... North Pole and South Pole assumed Earth ends. And there, beyond the Poles, the most fascinating creative secrets were divulged. Throughout the ages, they had been held in sacred trust for the doubter and true seeker who ventured that way. The secrets then disclosed provided knowledge of land courses ...
... North Pole and South Pole assumed Earth ends. And there, beyond the Poles, the most fascinating creative secrets were divulged. Throughout the ages, they had been held in sacred trust for the doubter and true seeker who ventured that way. The secrets then disclosed provided knowledge of land courses ...
The Legacy of Galileo - Keck Institute for Space Studies
... destroyed the harmony of the system but: We therefore have a robust and excellent argument to remove any doubt amongst those who accept easily the revolution of the planets around the Sun in the Copernican system, but are much disturbed by the motion of the Moon around the Earth, while both make the ...
... destroyed the harmony of the system but: We therefore have a robust and excellent argument to remove any doubt amongst those who accept easily the revolution of the planets around the Sun in the Copernican system, but are much disturbed by the motion of the Moon around the Earth, while both make the ...
SkyWatcher2017.5 1.3 Mb - Boise Astronomical Society
... twice this month from certain parts of the world. The Sun is located in Aries on May 1st. It enters Taurus on May 14th. In the evening, Mars is in the northeast and Jupiter in the southeast. Jupiter is located in the southwest and Saturn in the southeast at midnight. Mercury and Venus can be seen in ...
... twice this month from certain parts of the world. The Sun is located in Aries on May 1st. It enters Taurus on May 14th. In the evening, Mars is in the northeast and Jupiter in the southeast. Jupiter is located in the southwest and Saturn in the southeast at midnight. Mercury and Venus can be seen in ...
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.