The Norman Lockyer plate archive collection
... so that one can query on-line what the collection contains and on what dates a given star was observed. I could offer an ascii template for that, or a list of FITS headers. Any request you got could then be met by a quick scan of the original, and only followed up with a more detailed, precise one i ...
... so that one can query on-line what the collection contains and on what dates a given star was observed. I could offer an ascii template for that, or a list of FITS headers. Any request you got could then be met by a quick scan of the original, and only followed up with a more detailed, precise one i ...
Autumn Asterisms for binoculars 2013
... Ursa Minor – the Mini Coathanger Most astronomers are familiar with the Coathanger (Collinder 399) in Vulpecula, but did you know there is another one? Ursa Minor boasts its own Coathanger consisting of 11 stars from 9th to 11th magnitude spanning about ...
... Ursa Minor – the Mini Coathanger Most astronomers are familiar with the Coathanger (Collinder 399) in Vulpecula, but did you know there is another one? Ursa Minor boasts its own Coathanger consisting of 11 stars from 9th to 11th magnitude spanning about ...
- MNASSA Page
... of 100 million suns and brightened up more than 2 000 times than it was before. Although the supernova itself is now a million times fainter than 23 years ago, light echoes are just beginning to show in the space surrounding it. Supernova 1987A was a blue super giant, with a core collapse that shoul ...
... of 100 million suns and brightened up more than 2 000 times than it was before. Although the supernova itself is now a million times fainter than 23 years ago, light echoes are just beginning to show in the space surrounding it. Supernova 1987A was a blue super giant, with a core collapse that shoul ...
Eris en Dysnomia
... Curently about 19th magnitude, the object is near aphelion, 97 AUs (about 9 billion miles), or about twice as far as Pluto, from the Sun. Original estimates of its size, based on its brightness and distance, suggested that it might be as much as 2000 miles in diameter, making it substantially larger ...
... Curently about 19th magnitude, the object is near aphelion, 97 AUs (about 9 billion miles), or about twice as far as Pluto, from the Sun. Original estimates of its size, based on its brightness and distance, suggested that it might be as much as 2000 miles in diameter, making it substantially larger ...
The Galactic Center with Gemini
... starting community science obs: [10 half-nights run] Stellar content near SgrA* and Arches Cluster ...
... starting community science obs: [10 half-nights run] Stellar content near SgrA* and Arches Cluster ...
Direct Imaging of Exoplanets - American Museum of Natural History
... science, so each of them is valuable. Radial velocity has been very successful in measuring masses and periods of planets with masses greater than several Earths and in short-period orbits. Transits have been valuable in measuring the diameters and periods of giant planets, and in combined-light mod ...
... science, so each of them is valuable. Radial velocity has been very successful in measuring masses and periods of planets with masses greater than several Earths and in short-period orbits. Transits have been valuable in measuring the diameters and periods of giant planets, and in combined-light mod ...
Philosophical Transactions of the Royal Society of London. Series A
... Eddington on the expedition to verify Einstein's prediction of the bending of light around the sun. For positive version, see Image:1919 eclipse positive.jpg. Original caption: In Plate 1 is given a half-tone reproduction of one of the negatives taken with the 4-inch lens at Sobral. This shows the p ...
... Eddington on the expedition to verify Einstein's prediction of the bending of light around the sun. For positive version, see Image:1919 eclipse positive.jpg. Original caption: In Plate 1 is given a half-tone reproduction of one of the negatives taken with the 4-inch lens at Sobral. This shows the p ...
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.