Article PDF - IOPscience
... reaching 5s single-epoch depths of about 22.0, 22.0, 21.9, 21.0, and 19.8 mag in gP1, rP1, iP1, zP1, and yP1 bands, respectively. The uncertainty in photometric calibration of the survey is 0.01 mag (Schlafly et al. 2012), and the astrometric precision of single-epoch detections is 10 mas (Magnier e ...
... reaching 5s single-epoch depths of about 22.0, 22.0, 21.9, 21.0, and 19.8 mag in gP1, rP1, iP1, zP1, and yP1 bands, respectively. The uncertainty in photometric calibration of the survey is 0.01 mag (Schlafly et al. 2012), and the astrometric precision of single-epoch detections is 10 mas (Magnier e ...
Worlds Beyond: A Strategy for the Detection and Characterization of
... fraction is 90%, using the mass-radius relation from Fortney et al. (2007). Many more such planets are characterizable, including some planets in the habitable zone. The results also depend sensitively on the criteria for characterizability. As another example, we consider NIRCam photometry using a ...
... fraction is 90%, using the mass-radius relation from Fortney et al. (2007). Many more such planets are characterizable, including some planets in the habitable zone. The results also depend sensitively on the criteria for characterizability. As another example, we consider NIRCam photometry using a ...
the stebbins galaxy: the origins of interstellar medium studies
... thus undermining their implication of the relatively small sizes and distances of spiral nebulae (Berendzen and Hart, 1973; Hetherington, 1974). Taken together these results helped reinforce the inclination of many astronomers to understand the spiral nebulae as vast stellar structures (‗island univ ...
... thus undermining their implication of the relatively small sizes and distances of spiral nebulae (Berendzen and Hart, 1973; Hetherington, 1974). Taken together these results helped reinforce the inclination of many astronomers to understand the spiral nebulae as vast stellar structures (‗island univ ...
- National Optical Astronomy Observatory
... information to determine the desired stepping rate for the limb guider translation stage and the number of spectral frame to collect. (Take into account that one slit width is about half an arcsecond and the diffraction limit of the telescope at 5 microns is ~0.8 arcseconds. Spatially sampling at ~0 ...
... information to determine the desired stepping rate for the limb guider translation stage and the number of spectral frame to collect. (Take into account that one slit width is about half an arcsecond and the diffraction limit of the telescope at 5 microns is ~0.8 arcseconds. Spatially sampling at ~0 ...
Stars, Galaxies, Superuniverses and the Urantia Book, by Frederick
... The Urantia Book is probably referring here to the Hale (Mt Palomar) telescope, which went into operation in 1948. The figure 375 million thus refers to the additional new galaxies observable when the Hale telescope was put into operation, not the number of galaxies in the master universe. Recently ...
... The Urantia Book is probably referring here to the Hale (Mt Palomar) telescope, which went into operation in 1948. The figure 375 million thus refers to the additional new galaxies observable when the Hale telescope was put into operation, not the number of galaxies in the master universe. Recently ...
The CCD Photometric Calibration Cookbook
... independent of each other and you can use just the ones appropriate for your purposes. It is also worth noting that astronomical photometry is a diverse subject. There are many different ways of making and reducing photometric observations. Observations can be made for very different types of progra ...
... independent of each other and you can use just the ones appropriate for your purposes. It is also worth noting that astronomical photometry is a diverse subject. There are many different ways of making and reducing photometric observations. Observations can be made for very different types of progra ...
We Do Not Forget Johannes Kepler Introduction
... Meanwhile, in response to concerns about the dierent apparent diameter of the Moon when observed directly and when observed using a camera obscura, Kepler did some work on optics, and came up with the rst correct mathematical theory of the camera obscura and the rst correct explanation of working ...
... Meanwhile, in response to concerns about the dierent apparent diameter of the Moon when observed directly and when observed using a camera obscura, Kepler did some work on optics, and came up with the rst correct mathematical theory of the camera obscura and the rst correct explanation of working ...
Hubble 2006: Science Year in Review
... The servicing mission in 1999 enhanced many of Hubble’s subsystems, including the central computer, a new solid-state data-recording system to replace the aging magnetic tape drives, and the gyroscopes needed for pointing control. A month prior to launch, a gyroscope failure had forced Hubble into ...
... The servicing mission in 1999 enhanced many of Hubble’s subsystems, including the central computer, a new solid-state data-recording system to replace the aging magnetic tape drives, and the gyroscopes needed for pointing control. A month prior to launch, a gyroscope failure had forced Hubble into ...
PDF - NMSU Astronomy
... from the Earth to the Moon is 384,000,000 meters or 384,000 kilometers (km). The distances found in astronomy are usually so large that we have to switch to a unit of measurement that is much larger than the meter, or even the kilometer. In and around the solar system, astronomers use “Astronomical ...
... from the Earth to the Moon is 384,000,000 meters or 384,000 kilometers (km). The distances found in astronomy are usually so large that we have to switch to a unit of measurement that is much larger than the meter, or even the kilometer. In and around the solar system, astronomers use “Astronomical ...
Confirmation of Hostless Type Ia Supernovae Using Hubble Space
... long-faded Type Ia supernovae (SNe Ia) in low-redshift, rich galaxy clusters that were identified in the Multi-Epoch Nearby Cluster Survey. Assuming a steep faint-end slope for the galaxy cluster luminosity function (αd = −1.5), our data includes all but . 0.2% percent of the stellar mass in cluster ...
... long-faded Type Ia supernovae (SNe Ia) in low-redshift, rich galaxy clusters that were identified in the Multi-Epoch Nearby Cluster Survey. Assuming a steep faint-end slope for the galaxy cluster luminosity function (αd = −1.5), our data includes all but . 0.2% percent of the stellar mass in cluster ...
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.