Week 5 File
... For two point-‐like objects on the sky, separated by a small angle θ, we say that these can be just resolved by a telescope of aperture D when observing at wavelength λ if: ...
... For two point-‐like objects on the sky, separated by a small angle θ, we say that these can be just resolved by a telescope of aperture D when observing at wavelength λ if: ...
M13 – The Great Hercules Cluster
... The quiet, peaceful nights of winter have now been replaced by summer nights full of the sounds of life. Cicadas, crickets, whippoorwills and barred owls provide a symphony for our ears while the stars of summer provide a symphony for our eyes. Go outside on a warm June night and look up at the star ...
... The quiet, peaceful nights of winter have now been replaced by summer nights full of the sounds of life. Cicadas, crickets, whippoorwills and barred owls provide a symphony for our ears while the stars of summer provide a symphony for our eyes. Go outside on a warm June night and look up at the star ...
The Constellation Microscopium, the Microscope Microscopium is a
... uses more than one lens. The first microscope was invented by the two brothers, Hans and Zacharius Jensen, Dutch spectacle makers of Holland in 1590, who were also involved in the invention of the telescope (see below). Lacaille first showed it on his map of 1756 under the name le Microscope but Lat ...
... uses more than one lens. The first microscope was invented by the two brothers, Hans and Zacharius Jensen, Dutch spectacle makers of Holland in 1590, who were also involved in the invention of the telescope (see below). Lacaille first showed it on his map of 1756 under the name le Microscope but Lat ...
Astronomy Timeline This is a timeline of important events
... The Russian Venera 7 becomes first to land softly on the surface of Venus. ...
... The Russian Venera 7 becomes first to land softly on the surface of Venus. ...
February - Bristol Astronomical Society
... This famous cluster has been known since prehistoric times. The ancient Greeks saw this "nebula" as the manger (Phatne) associated with two asses who eat from it, Asellus Borealis, the Northern Ass (Gamma Cnc) and Asellus Australis, the Southern Ass (Delta Cnc). Erathosthenes reported that these wer ...
... This famous cluster has been known since prehistoric times. The ancient Greeks saw this "nebula" as the manger (Phatne) associated with two asses who eat from it, Asellus Borealis, the Northern Ass (Gamma Cnc) and Asellus Australis, the Southern Ass (Delta Cnc). Erathosthenes reported that these wer ...
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.