Selection Criteria for LAEs at z=4.8
... Figure (a) indicates that ranges of the stellar masses of our sample are comparable to those of LAEs at other redshifts except ones at z~5 by Pirzkal et al.(2007). The difference in masses between our LAEs and those by Pirzkal et al. may be explicable by the difference in rest-frame optical brightne ...
... Figure (a) indicates that ranges of the stellar masses of our sample are comparable to those of LAEs at other redshifts except ones at z~5 by Pirzkal et al.(2007). The difference in masses between our LAEs and those by Pirzkal et al. may be explicable by the difference in rest-frame optical brightne ...
Part I Light, Telescopes, Atoms and Stars
... Photographic Plates were the standard… but now; CCD cameras • =Charge-Coupled Device (where we get modern video cameras ...
... Photographic Plates were the standard… but now; CCD cameras • =Charge-Coupled Device (where we get modern video cameras ...
Planetary Nebula
... tearing across space at more than 600,000 miles an hour -- fast enough to travel from Earth to the moon in 24 minutes! A dying star that was once about five times the mass of the Sun is at the center of this fury. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet rad ...
... tearing across space at more than 600,000 miles an hour -- fast enough to travel from Earth to the moon in 24 minutes! A dying star that was once about five times the mass of the Sun is at the center of this fury. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet rad ...
Ambiguity-preserving Generation with LFG
... As a consequence of this theorem we know that we cannot appeal to a general algorithm for solving the problem of ambiguity-preserving translation. This does not rule out the possibility that solutions can be found for specific constructions in translating between certain language pairs--for example, ...
... As a consequence of this theorem we know that we cannot appeal to a general algorithm for solving the problem of ambiguity-preserving translation. This does not rule out the possibility that solutions can be found for specific constructions in translating between certain language pairs--for example, ...
A Target of Opportunity Observing System for NOAO Rob Seaman
... Astronomy is many disciplines From Solar System to Galaxy to Cosmos From Big Bang to current epoch From gigayear stasis to explosive detonation Physics in extreme regimes Earth’s broadest context Civilization’s ultimate master ...
... Astronomy is many disciplines From Solar System to Galaxy to Cosmos From Big Bang to current epoch From gigayear stasis to explosive detonation Physics in extreme regimes Earth’s broadest context Civilization’s ultimate master ...
Stars Of Orion Essay Research Paper 01
... Looking at Orion is more than just looking at an area that is easy to recognize in the night sky. Orion is seething with activity and illustrates a clear and concise picture, of how stars are formed. It gives us the ability to compare different types of stars and most importantly, it’s right next do ...
... Looking at Orion is more than just looking at an area that is easy to recognize in the night sky. Orion is seething with activity and illustrates a clear and concise picture, of how stars are formed. It gives us the ability to compare different types of stars and most importantly, it’s right next do ...
EXPERIMENT 13 Balmer Series of Hydrogen - On
... suitably "excited" by an electric discharge, spark, or flame. If this light is viewed through a prism or diffraction grating, the spectrum consists of a series of discrete lines whose wavelengths are characteristic of the element concerned. The wavelengths that occur are directly related to the stru ...
... suitably "excited" by an electric discharge, spark, or flame. If this light is viewed through a prism or diffraction grating, the spectrum consists of a series of discrete lines whose wavelengths are characteristic of the element concerned. The wavelengths that occur are directly related to the stru ...
The Orion 190-mm Maksutov-Newtonian
... 70s, I decided to switch to the thermalelectric cooled SBIG CCD camera. Although heavier than the Canon 30D, the compression ring held it firmly in place. Unfortunately, I was unable to achieve focus with the Crayford focuser’s one inch of travel – it would not extend out far enough to achieve focus ...
... 70s, I decided to switch to the thermalelectric cooled SBIG CCD camera. Although heavier than the Canon 30D, the compression ring held it firmly in place. Unfortunately, I was unable to achieve focus with the Crayford focuser’s one inch of travel – it would not extend out far enough to achieve focus ...
SPIE - Twinkle Space Mission
... stellar images at the entrance apertures of the spectrometers is critical to the radiometric stability. The calibration of the guidance system can be achieved on one channel or an average of the two using, for example, a peaking up routine. But the co-alignment of the two apertures is dependent on t ...
... stellar images at the entrance apertures of the spectrometers is critical to the radiometric stability. The calibration of the guidance system can be achieved on one channel or an average of the two using, for example, a peaking up routine. But the co-alignment of the two apertures is dependent on t ...
Exploring the Outer Solar System Jane Luu When I was
... and temporarily block out its light (the star is “occulted”). If you monitored the star’s brightness, you would find that the star would dim very briefly, then return to its original brightness after the object had passed by. The duration of this dip in the star’s brightness is an indication of how ...
... and temporarily block out its light (the star is “occulted”). If you monitored the star’s brightness, you would find that the star would dim very briefly, then return to its original brightness after the object had passed by. The duration of this dip in the star’s brightness is an indication of how ...
Collimating Orion StarMax and Apex Maksutov
... Once you are ready to collimate, look into rear opening of the tube. If your telescope is out of collimation, it will resemble Figure 2a, a properly collimated scope will resemble Figure 2b. The direction of the misalignment in your telescope may differ from Figure 2a, but the diagram will give you ...
... Once you are ready to collimate, look into rear opening of the tube. If your telescope is out of collimation, it will resemble Figure 2a, a properly collimated scope will resemble Figure 2b. The direction of the misalignment in your telescope may differ from Figure 2a, but the diagram will give you ...
JMAPS
... A secondary application of JMAPS to NWO is spacecraft navigation. As shown in Figure 9, the JMAPS instrument can be used to observe Solar system objects. By combining observations of multiple objects, the position of the instrument within the solar system can be determined. This is analogous to work ...
... A secondary application of JMAPS to NWO is spacecraft navigation. As shown in Figure 9, the JMAPS instrument can be used to observe Solar system objects. By combining observations of multiple objects, the position of the instrument within the solar system can be determined. This is analogous to work ...
Document
... Goals of this course • To understand the main concepts behind adaptive optics systems • To understand how to do astronomical observations with AO – Planning, reducing, and interpreting data (your own data, but just as importantly other people’s data) – Some of this will apply to AO for vision scien ...
... Goals of this course • To understand the main concepts behind adaptive optics systems • To understand how to do astronomical observations with AO – Planning, reducing, and interpreting data (your own data, but just as importantly other people’s data) – Some of this will apply to AO for vision scien ...
Celestron Manual
... Let’s say, for example, you are using the 20mm eyepiece that came with your Travel Scope 70 telescope. To determine the magnification you divide the focal length of your telescope (the Travel Scope for this example has a focal length of 400mm) by the focal length of the eyepiece, 20mm. Dividing 400 ...
... Let’s say, for example, you are using the 20mm eyepiece that came with your Travel Scope 70 telescope. To determine the magnification you divide the focal length of your telescope (the Travel Scope for this example has a focal length of 400mm) by the focal length of the eyepiece, 20mm. Dividing 400 ...
Calibration of Non-Spatially-Filtered Data in Optical
... pulsating and ejecting its outer layers on its way to becoming an earth-sized white dwarf. ...
... pulsating and ejecting its outer layers on its way to becoming an earth-sized white dwarf. ...
Event-Sequence Time Series Analysis for Very
... Blazars constitute the primary class of extragalactic very-high energy (VHE) emitters in the sky and are among some of the brightest and most variable sources in the TeVs. Recently, extreme variability episodes have been detected by ground-based gamma-ray facilities – such as the two large outbursts ...
... Blazars constitute the primary class of extragalactic very-high energy (VHE) emitters in the sky and are among some of the brightest and most variable sources in the TeVs. Recently, extreme variability episodes have been detected by ground-based gamma-ray facilities – such as the two large outbursts ...
optimized
... Twenty years ago IRAS gave us what is still our best view of the midinfrared sky. ...
... Twenty years ago IRAS gave us what is still our best view of the midinfrared sky. ...
Senior thesis - University of Texas Astronomy Home Page
... In order to observe an eclipsing system, where one star passes in front of its companion and blocks its light, the inclination i must be close to 90◦ . Unless the two stars are identical, one of the eclipses, called the primary eclipse, is likely to result in a greater decrease in brightness than th ...
... In order to observe an eclipsing system, where one star passes in front of its companion and blocks its light, the inclination i must be close to 90◦ . Unless the two stars are identical, one of the eclipses, called the primary eclipse, is likely to result in a greater decrease in brightness than th ...
Where to Look: Habitable Zones
... Very sensitive – Energy of Earth could be detected out to 1000 LY ...
... Very sensitive – Energy of Earth could be detected out to 1000 LY ...
March
... Cen is a binary star: two stars about the same size as the sun orbiting around each other in 80 years. A telescope magnifying 50x will split the pair. (A very faint and slightly closer star, Proxima Centauri, orbits a quarter of a light-year, or 15 000 Sun-earth distances, from Alpha.) Coalsack nebu ...
... Cen is a binary star: two stars about the same size as the sun orbiting around each other in 80 years. A telescope magnifying 50x will split the pair. (A very faint and slightly closer star, Proxima Centauri, orbits a quarter of a light-year, or 15 000 Sun-earth distances, from Alpha.) Coalsack nebu ...
SALTeNEWS_9
... Many of the SALT operations staff, particularly the technical support staff, have already been appointed and are working alongside the SALT Project Team at Sutherland. This is a mutually beneficial situation in which maximum knowledge transfer from the construction team to the operations team can ta ...
... Many of the SALT operations staff, particularly the technical support staff, have already been appointed and are working alongside the SALT Project Team at Sutherland. This is a mutually beneficial situation in which maximum knowledge transfer from the construction team to the operations team can ta ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.