X-ray astronomy - University of Warwick
... • X-ray detectors tend to give time, energy and location of each photon – Can collapse event lists to images, light curves or spectra • Or combinations thereof ...
... • X-ray detectors tend to give time, energy and location of each photon – Can collapse event lists to images, light curves or spectra • Or combinations thereof ...
HOPS 383: An Outbursting Class 0 Protostar in Orion
... HOPS team created a grid of 3040 model SEDs with parameters appropriate for protostars, first described by Ali et al. (2010), and updated by E. Furlan et al. (in preparation). We found the best fit by minimizing R, which measures the logarithmic deviation of the models from the observations in units ...
... HOPS team created a grid of 3040 model SEDs with parameters appropriate for protostars, first described by Ali et al. (2010), and updated by E. Furlan et al. (in preparation). We found the best fit by minimizing R, which measures the logarithmic deviation of the models from the observations in units ...
astronomical objects detection-paper-06-25-2014
... camera artifacts. This region can be handled better for extraction of objects compared to a conventional partitioning scheme where this large star would span multiple regions. Further, by combining this sub-region division with layered detection more faint objects can be detected. ...
... camera artifacts. This region can be handled better for extraction of objects compared to a conventional partitioning scheme where this large star would span multiple regions. Further, by combining this sub-region division with layered detection more faint objects can be detected. ...
The 2008 RBSE Journal - National Optical Astronomy Observatory
... and usually end up being bigger than the originating galaxy. The smallest known are only a few tens of parsecs across, while the largest are known to be up to several megaparsecs. The average radio galaxy is usually typically hundreds of kiloparsecs across. This is about twice the size of the Milky ...
... and usually end up being bigger than the originating galaxy. The smallest known are only a few tens of parsecs across, while the largest are known to be up to several megaparsecs. The average radio galaxy is usually typically hundreds of kiloparsecs across. This is about twice the size of the Milky ...
Strong linear polarization of V4332 Sagittarii: a dusty disc geometry⋆
... be insignificant when compared to errors related to the deviations between the two sets of the derived Stokes parameters PQ and PU . Below we provide those deviations (in the sense of 1σ) propagated to the calculation of PL and PA as our final uncertainties. The instrumental polarization was checked ...
... be insignificant when compared to errors related to the deviations between the two sets of the derived Stokes parameters PQ and PU . Below we provide those deviations (in the sense of 1σ) propagated to the calculation of PL and PA as our final uncertainties. The instrumental polarization was checked ...
Finnish Centre for Astronomy with ESO
... Main research areas The research at FINCA concentrates on observational astronomy carried out using radio to gamma-rays multi-wavelength data from large ground-based and space telescopes. The most commonly used methods are optical and infrared imaging, spectroscopy and polarimetry. Especially, we ma ...
... Main research areas The research at FINCA concentrates on observational astronomy carried out using radio to gamma-rays multi-wavelength data from large ground-based and space telescopes. The most commonly used methods are optical and infrared imaging, spectroscopy and polarimetry. Especially, we ma ...
identifying seasonal stars in kaurna astronomical traditions
... Abstract: Early ethnographers and missionaries recorded Aboriginal languages and oral traditions across Australia. Their general lack of astronomical training resulted in misidentifications, transcription errors and omissions in these records. In western Victoria and southeast South Australia many a ...
... Abstract: Early ethnographers and missionaries recorded Aboriginal languages and oral traditions across Australia. Their general lack of astronomical training resulted in misidentifications, transcription errors and omissions in these records. In western Victoria and southeast South Australia many a ...
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.