`Carbonite` space imager revealed
... News. (If there is cloud in the way, the ground cannot be seen by an optical satellite). "There is a lot of hype out there about some of these new systems - that they can do everything. "No, they can't, but for certain applications, they will nevertheless perform a role in supporting more capable co ...
... News. (If there is cloud in the way, the ground cannot be seen by an optical satellite). "There is a lot of hype out there about some of these new systems - that they can do everything. "No, they can't, but for certain applications, they will nevertheless perform a role in supporting more capable co ...
objects in telescope are farther than they appear
... approximately 360 AU. So according to Galileo the stars we can see range from being hundreds to thousands of AU distant. This is pretty far -- Neptune lies approximately 30 AU from the Sun -- but today we know that stars are vastly more distant than Galileo figured. The nearest stars are almost 300, ...
... approximately 360 AU. So according to Galileo the stars we can see range from being hundreds to thousands of AU distant. This is pretty far -- Neptune lies approximately 30 AU from the Sun -- but today we know that stars are vastly more distant than Galileo figured. The nearest stars are almost 300, ...
stargazing - davis.k12.ut.us
... on what they thought the picture looked like, ancient people associated them with objects, beasts or people. They wrote stories about stars related to heroes, heroines and beasts of their time and culture. Since those ancient times, people have continued to make up stories, develop religious practic ...
... on what they thought the picture looked like, ancient people associated them with objects, beasts or people. They wrote stories about stars related to heroes, heroines and beasts of their time and culture. Since those ancient times, people have continued to make up stories, develop religious practic ...
Grzegorz F - (EU
... - Relatively clear, because each tiny bit of the image you get comes from a relatively small portion of the Sun (this is due to the small hole). It could be perfectly sharp, if the hole was infinitely small, and the light did not have the nature of the wave and did not result in the phenomenon of di ...
... - Relatively clear, because each tiny bit of the image you get comes from a relatively small portion of the Sun (this is due to the small hole). It could be perfectly sharp, if the hole was infinitely small, and the light did not have the nature of the wave and did not result in the phenomenon of di ...
SM_Taurus - Cloudy Nights
... For the last several thousand years, mankind has been a little bull-headed when it comes to Taurus. It has the distinction of being one of the oldest recognized constellations in the night sky. According to some records, it's been in this form for 4000 years or longer. In ancient times, the appearan ...
... For the last several thousand years, mankind has been a little bull-headed when it comes to Taurus. It has the distinction of being one of the oldest recognized constellations in the night sky. According to some records, it's been in this form for 4000 years or longer. In ancient times, the appearan ...
PODEX – PhOtometric Data EXtractor
... • FITS header keywords for date, Universal Time and integration time of the observations: Date and time are needed for calculation of the Julian date. Intensities are are normalised to ADU per, i. e. dividing by integration time. • Right ascension (h:m:s) and declination (d:m:s) of the image centre: ...
... • FITS header keywords for date, Universal Time and integration time of the observations: Date and time are needed for calculation of the Julian date. Intensities are are normalised to ADU per, i. e. dividing by integration time. • Right ascension (h:m:s) and declination (d:m:s) of the image centre: ...
Measuring The Parallax of Barnard's Star
... to worry about the fact that at low altitude stars of different colors are refracted differently by the atmosphere. I had taken the images using a broad-band luminance filter and so this refraction issue could be a problem especially given that the sixth image was acquired when Barnard’s star was so ...
... to worry about the fact that at low altitude stars of different colors are refracted differently by the atmosphere. I had taken the images using a broad-band luminance filter and so this refraction issue could be a problem especially given that the sixth image was acquired when Barnard’s star was so ...
Fingerprints in Sunlight - VCI
... Motion away from us results in a “red shift” Motion towards us results in a “blue shift ...
... Motion away from us results in a “red shift” Motion towards us results in a “blue shift ...
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.