![Bluffing your way in Astronomy: Taurus](http://s1.studyres.com/store/data/007106721_1-26194c9beeeae83c325321840c7f9ca5-300x300.png)
night watch - Warren Astronomical Society
... backside of the eyepiece disc white. For best resolution, final alignment must be done at night, using a first or second magnitude star. Wait for a night when the seeing is very good and the stars are not twinkling. Allow the telescope to sit outdoors for at least one hour for all the optics to beco ...
... backside of the eyepiece disc white. For best resolution, final alignment must be done at night, using a first or second magnitude star. Wait for a night when the seeing is very good and the stars are not twinkling. Allow the telescope to sit outdoors for at least one hour for all the optics to beco ...
Explores Angular Size - Chandra X
... called the arc-minute. There are 60 arcminutes in one degree. What we really would like to know is, physically, how big something is in kilometers, instead of how big it appears to be in angular measure. To get this information, all we need to know is how far away the object is from us. The moon is ...
... called the arc-minute. There are 60 arcminutes in one degree. What we really would like to know is, physically, how big something is in kilometers, instead of how big it appears to be in angular measure. To get this information, all we need to know is how far away the object is from us. The moon is ...
A Field Guide to WFPC2 Image Anomalies
... eliminate them. While careful analysis techniques can reduce their effects, the only complete cure is taking multiple data frames of the same field and being prepared to discard affected image regions. These anomalies include moving targets, missing data, jumps in bias level, and bias ripples. Simil ...
... eliminate them. While careful analysis techniques can reduce their effects, the only complete cure is taking multiple data frames of the same field and being prepared to discard affected image regions. These anomalies include moving targets, missing data, jumps in bias level, and bias ripples. Simil ...
orion® StarBlast 6 astro telescope
... more stars and deep-sky objects are visible in a dark sky! “Seeing” and Transparency Atmospheric conditions vary significantly from night to night. “Seeing” refers to the steadiness of the Earth’s atmosphere at a given time. In conditions of poor seeing, atmospheric turbulence causes objects viewed ...
... more stars and deep-sky objects are visible in a dark sky! “Seeing” and Transparency Atmospheric conditions vary significantly from night to night. “Seeing” refers to the steadiness of the Earth’s atmosphere at a given time. In conditions of poor seeing, atmospheric turbulence causes objects viewed ...
Two new transiting extra-solar planets discovered with SuperWASP
... The two faint stars around which the new exoplanets were found are relatively similar to our Sun. Star WASP-1 is slightly hotter and larger and its located 1000 light-years away in Andromeda. Star WASP-2 is slightly colder and smaller and is located 500 light-years away in the Dolphin. Although invi ...
... The two faint stars around which the new exoplanets were found are relatively similar to our Sun. Star WASP-1 is slightly hotter and larger and its located 1000 light-years away in Andromeda. Star WASP-2 is slightly colder and smaller and is located 500 light-years away in the Dolphin. Although invi ...
A New Variable Star in Perseus
... Observatory (TUG) site, Antalya, Turkey. These observations were carried out with the 45 cm robotic telescope operated without filters. A code of Schwarzenberg-Czerny (1989, 1996) was used in order to find the period of variable star. The period of variable star was determined as P=0d.55120.0005 us ...
... Observatory (TUG) site, Antalya, Turkey. These observations were carried out with the 45 cm robotic telescope operated without filters. A code of Schwarzenberg-Czerny (1989, 1996) was used in order to find the period of variable star. The period of variable star was determined as P=0d.55120.0005 us ...
Astrophotography
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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.