NICMOS Coronagraphic Observations of 55 Cancri
... reclassified it as G8II-III, although a search through the literature spanning more than four decades (e.g., Nikonov et al. (1957), Marlborough (1964), and others) reveals no evidence of any optical variability as may be expected at some level for a sub-giant. Gonzalez (1998) confirmed its sub-giant ...
... reclassified it as G8II-III, although a search through the literature spanning more than four decades (e.g., Nikonov et al. (1957), Marlborough (1964), and others) reveals no evidence of any optical variability as may be expected at some level for a sub-giant. Gonzalez (1998) confirmed its sub-giant ...
WFC3 Science White Paper - Space Telescope Science Institute
... problem of red leaks (i.e. unwanted long-wavelength photons) in the UV filters. STIS has much improved UV response, good resolution, and much reduced red-leak problem thanks to its MultiAnode Microchannel Array (MAMA) detectors, but its imaging fields of view are very small (25 arcsec) and are not w ...
... problem of red leaks (i.e. unwanted long-wavelength photons) in the UV filters. STIS has much improved UV response, good resolution, and much reduced red-leak problem thanks to its MultiAnode Microchannel Array (MAMA) detectors, but its imaging fields of view are very small (25 arcsec) and are not w ...
CONSTELLATION PERSEUS The constellation
... Located 92.8 light-years from Earth, it varies in apparent magnitude from a minimum of 3.5 to a maximum of 2.3 over a period of 2.867 days. The star system is the prototype of a group of eclipsing binary stars named Algol variables. • Alpha Persei known as Mirfak (Arabic for elbow) is the brightest ...
... Located 92.8 light-years from Earth, it varies in apparent magnitude from a minimum of 3.5 to a maximum of 2.3 over a period of 2.867 days. The star system is the prototype of a group of eclipsing binary stars named Algol variables. • Alpha Persei known as Mirfak (Arabic for elbow) is the brightest ...
Radio pulsars
... • Young pulsars have unpredictable changes in period glitches and period noise. • Millisecond pulsars have extremely stable periods. ...
... • Young pulsars have unpredictable changes in period glitches and period noise. • Millisecond pulsars have extremely stable periods. ...
PDF - NMSU Astronomy
... they are looking at, and submit their results for publication. Along the way astronomers use all of the mathematical techniques and physics necessary to understand the objects they examine. Thus, just like any other science, a large number of mathematical tools and concepts are needed to perform ast ...
... they are looking at, and submit their results for publication. Along the way astronomers use all of the mathematical techniques and physics necessary to understand the objects they examine. Thus, just like any other science, a large number of mathematical tools and concepts are needed to perform ast ...
(Download from http://astronomy.nmsu.edu/astro/) c NMSU
... they are looking at, and submit their results for publication. Along the way astronomers use all of the mathematical techniques and physics necessary to understand the objects they examine. Thus, just like any other science, a large number of mathematical tools and concepts are needed to perform ast ...
... they are looking at, and submit their results for publication. Along the way astronomers use all of the mathematical techniques and physics necessary to understand the objects they examine. Thus, just like any other science, a large number of mathematical tools and concepts are needed to perform ast ...
Document
... De-spaceing of the HST secondary mirror along the telescope optical axis from (orbit driven) thermal instabilities in the OTA causes variations in the PSF structures which are typically THE dominant source of systmatic errors in coronagraphic PSF subtraction. The thermal time constant of the OTA is ...
... De-spaceing of the HST secondary mirror along the telescope optical axis from (orbit driven) thermal instabilities in the OTA causes variations in the PSF structures which are typically THE dominant source of systmatic errors in coronagraphic PSF subtraction. The thermal time constant of the OTA is ...
Theory of Pixel Lensing
... particular it is possible to measure the individual time scales of the events and so use equation (1.4) to determine the optical depth. It is also possible to measure the unlensed uxes of the source stars and thus the luminosity function (LF). In more distant galaxies, pixel lensing enters the spik ...
... particular it is possible to measure the individual time scales of the events and so use equation (1.4) to determine the optical depth. It is also possible to measure the unlensed uxes of the source stars and thus the luminosity function (LF). In more distant galaxies, pixel lensing enters the spik ...
Sky Watcher - Boise Astronomical Society
... Do you want to learn how to identify the constellation of Scorpius the Scorpion? The moon passes close to the scorpion’s northern claw on the morning of the 15th. The heart of Scorpius (Antares) is located to the moon’s lower left. The rest of the scorpion’s body is the curved chain of stars south a ...
... Do you want to learn how to identify the constellation of Scorpius the Scorpion? The moon passes close to the scorpion’s northern claw on the morning of the 15th. The heart of Scorpius (Antares) is located to the moon’s lower left. The rest of the scorpion’s body is the curved chain of stars south a ...
Strongly suggested reading: The stellar halo of the Galaxy
... In Sect. 4, we describe our current knowledge of the metallicity distribution of halo stars, and particularly focus on what it reveals about star formation in the early Universe. We also discuss what chemical abundance patterns tell us about the process of formation of the Galaxy. Not only halo fiel ...
... In Sect. 4, we describe our current knowledge of the metallicity distribution of halo stars, and particularly focus on what it reveals about star formation in the early Universe. We also discuss what chemical abundance patterns tell us about the process of formation of the Galaxy. Not only halo fiel ...
Radio Emission Toward Regions of Massive Star Formation
... the onset of fusion occurs before they reach their final main-sequence mass. This works against monolithic accretion because of the increased radiation pressure of the star. Nevertheless, massive stars with accretion disks and bipolar outflows have been directly observed (Kraus et al. 2010). Therefo ...
... the onset of fusion occurs before they reach their final main-sequence mass. This works against monolithic accretion because of the increased radiation pressure of the star. Nevertheless, massive stars with accretion disks and bipolar outflows have been directly observed (Kraus et al. 2010). Therefo ...
NexStar SLT Series Manual
... mastered your telescope’s operation. The NexStar hand control has built-in instructions to guide you through all the alignment procedures needed to have the telescope up and running in minutes. Use this manual in conjunction with the on-screen instructions provided by the hand control. The manual gi ...
... mastered your telescope’s operation. The NexStar hand control has built-in instructions to guide you through all the alignment procedures needed to have the telescope up and running in minutes. Use this manual in conjunction with the on-screen instructions provided by the hand control. The manual gi ...
Brightest Stars : Discovering the Universe Through the Sky`s Most
... enables us to truly understand them as individuals. Other recent technological breakthroughs have also helped greatly. In the past five years, what astronomers have learned about the familiar brightest stars in our sky is amazing. They’ve revealed evidence of planets around three of the twenty-one s ...
... enables us to truly understand them as individuals. Other recent technological breakthroughs have also helped greatly. In the past five years, what astronomers have learned about the familiar brightest stars in our sky is amazing. They’ve revealed evidence of planets around three of the twenty-one s ...
Galaxy Evolution
... times brighter than stars like the Sun, their total luminosity will approximately equal that of 2 × 1010 of these. Thus, during the star formation activity the galaxy increases its luminosity by ∼ 20%. Its colors also become bluer, because the radiation emitted by massive stars is very rich of light ...
... times brighter than stars like the Sun, their total luminosity will approximately equal that of 2 × 1010 of these. Thus, during the star formation activity the galaxy increases its luminosity by ∼ 20%. Its colors also become bluer, because the radiation emitted by massive stars is very rich of light ...
Galaxy Evolution Encyclopedia of Astronomy & Astrophysics eaa.iop.org Mauro Giavalisco
... times brighter than stars like the Sun, their total luminosity will approximately equal that of 2 × 1010 of these. Thus, during the star formation activity the galaxy increases its luminosity by ∼ 20%. Its colors also become bluer, because the radiation emitted by massive stars is very rich of light ...
... times brighter than stars like the Sun, their total luminosity will approximately equal that of 2 × 1010 of these. Thus, during the star formation activity the galaxy increases its luminosity by ∼ 20%. Its colors also become bluer, because the radiation emitted by massive stars is very rich of light ...
nexstar_gt_60,80114.. - Downloads
... observing sessions to become familiar with your NexStar, so you should keep this manual handy until you have fully mastered your telescope’s operation. The NexStar hand control has built-in instructions to guide you through all the alignment procedures needed to have the telescope up and running in ...
... observing sessions to become familiar with your NexStar, so you should keep this manual handy until you have fully mastered your telescope’s operation. The NexStar hand control has built-in instructions to guide you through all the alignment procedures needed to have the telescope up and running in ...
Gov Aker Telescope Operators Manual
... the first time. Since Saturn is double as far from the Sun than Jupiter, it receives only a quarter of the light. While it has almost the size of Jupiter, Saturn’s larger distance results in a smaller, fainter view in the eyepiece. We tend trying to compensate by increasing magnification, but this m ...
... the first time. Since Saturn is double as far from the Sun than Jupiter, it receives only a quarter of the light. While it has almost the size of Jupiter, Saturn’s larger distance results in a smaller, fainter view in the eyepiece. We tend trying to compensate by increasing magnification, but this m ...
104-cm Sampurnanand Telescope
... in 1992 and is being used currently at ARIES. The detector covers an area of around 6 x 6 arcmin sky, works in non-MPP mode with dark current equal 0.56 e− /sec/pix at -110 deg C, 4X gain 2.96 e− /ADU. Well capacity is 390 ke. It can work at three gain (1X, 2X, 4X) settings viz gain = 11.98 e− /ADU, ...
... in 1992 and is being used currently at ARIES. The detector covers an area of around 6 x 6 arcmin sky, works in non-MPP mode with dark current equal 0.56 e− /sec/pix at -110 deg C, 4X gain 2.96 e− /ADU. Well capacity is 390 ke. It can work at three gain (1X, 2X, 4X) settings viz gain = 11.98 e− /ADU, ...
Untitled - NMSU Astronomy
... they are looking at, and submit their results for publication. Along the way astronomers use all of the mathematical techniques and physics necessary to understand the objects they examine. Thus, just like any other science, a large number of mathematical tools and concepts are needed to perform ast ...
... they are looking at, and submit their results for publication. Along the way astronomers use all of the mathematical techniques and physics necessary to understand the objects they examine. Thus, just like any other science, a large number of mathematical tools and concepts are needed to perform ast ...
SIMsim: An End-to-End Simulation of The Space Interferometer
... The first step of the simulation is to generate a complete 5-year schedule of observations off-line. This has been done by R. Swartz and X. Pan. Positions of date are needed for star targets, both science and guide, and observation times and durations are generated. Spacecraft and baseline pointing ...
... The first step of the simulation is to generate a complete 5-year schedule of observations off-line. This has been done by R. Swartz and X. Pan. Positions of date are needed for star targets, both science and guide, and observation times and durations are generated. Spacecraft and baseline pointing ...