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Testing Your Sky
... The darkness of the sky as seen from your favorite observing site can be either a help or a hindrance when it comes to observing the night. Under brightly lit conditions you'll not be able to view the fainter objects of the night. What follows is an exercise for determining darkness of the sky, a co ...
... The darkness of the sky as seen from your favorite observing site can be either a help or a hindrance when it comes to observing the night. Under brightly lit conditions you'll not be able to view the fainter objects of the night. What follows is an exercise for determining darkness of the sky, a co ...
Poster - Astronomical Institute WWW Homepage
... in Galilean satellites of Jupiter. Orbits of four Galilean satellites of Jupiter are located approximately in one plane. This plane is inclined to the plane of an orbit of a planet, but remains parallel to itself in the course of the planet rotation around the Sun. Therefore two times a cycle time t ...
... in Galilean satellites of Jupiter. Orbits of four Galilean satellites of Jupiter are located approximately in one plane. This plane is inclined to the plane of an orbit of a planet, but remains parallel to itself in the course of the planet rotation around the Sun. Therefore two times a cycle time t ...
Star names and magnitudes
... they keep these. Otherwise, their constellation name is prefixed by one or two letters, depending on the time of discovery. 334 combinations of letters are available – after that they are prefixed by Vnnn where nnn is >334. ...
... they keep these. Otherwise, their constellation name is prefixed by one or two letters, depending on the time of discovery. 334 combinations of letters are available – after that they are prefixed by Vnnn where nnn is >334. ...
Regulus, June-July 1990 - RASC Kingston Centre
... On the night of 02-04, I first saw the supernova in M66, Australian observer Bob Evan's 18th supernova discovery. It was fairly difficult in the 20 cm at 63X, at first, and I had to use averted vision, but later I saw it more easily. More recently, on 03-09, I found this supernova much more difficu ...
... On the night of 02-04, I first saw the supernova in M66, Australian observer Bob Evan's 18th supernova discovery. It was fairly difficult in the 20 cm at 63X, at first, and I had to use averted vision, but later I saw it more easily. More recently, on 03-09, I found this supernova much more difficu ...
Newfoundland Sky in Summer
... Most people have at some time seen what we call "shooting stars", flashes of light that shoot across the sky and then disappear. These are not really stars at all, but meteors - chunks of stone and/or metal which are going so fast that they burst into flame once they enter the earth's atmosphere. Mo ...
... Most people have at some time seen what we call "shooting stars", flashes of light that shoot across the sky and then disappear. These are not really stars at all, but meteors - chunks of stone and/or metal which are going so fast that they burst into flame once they enter the earth's atmosphere. Mo ...
Hertzsprung-Russell Diagram—key to understanding properties of stars. 26 Sept
... • You are a young astronomer in 1890, and you want to study stars. The distances to a few dozen stars are known. How do you attack this problem? • New developments in 1890 – Spectrometers analyze the colors of light – Photographic plates allow imaging of a large number of stars. ...
... • You are a young astronomer in 1890, and you want to study stars. The distances to a few dozen stars are known. How do you attack this problem? • New developments in 1890 – Spectrometers analyze the colors of light – Photographic plates allow imaging of a large number of stars. ...
31-2 - Fremont Peak Observatory
... effort goes into the event. In the past and by popular demand the Star-B-Que program includes a guest speaker, an astronomical trivia contest, a contest of those astronomically correct pot luck food items, activities for kids, a raffle, and BBQ chicken, hot dogs, and hamburgers provided by the FPOA. ...
... effort goes into the event. In the past and by popular demand the Star-B-Que program includes a guest speaker, an astronomical trivia contest, a contest of those astronomically correct pot luck food items, activities for kids, a raffle, and BBQ chicken, hot dogs, and hamburgers provided by the FPOA. ...
Astrophotography
![](https://commons.wikimedia.org/wiki/Special:FilePath/Orion_Belt.jpg?width=300)
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.