Celestron Manual
... only one threaded hole. Hold the optical tube with one hand while threading the screw clockwise until tight with the other hand. Now the assembly will look like Figure 2-11. Lastly, loosen the knob for the tripod platform and lower the platform down to the level position and then ...
... only one threaded hole. Hold the optical tube with one hand while threading the screw clockwise until tight with the other hand. Now the assembly will look like Figure 2-11. Lastly, loosen the knob for the tripod platform and lower the platform down to the level position and then ...
Microsoft Word 97
... 2) Radio waves and infrared are able to penetrate the dust. a) The Hubble Space Telescope has seen isolated stars when before we saw them as just a blur. 3) One of the brightest infrared sources in our sky is the nucleus of our galaxy, only about 10 light years across. 4) This makes it a very small ...
... 2) Radio waves and infrared are able to penetrate the dust. a) The Hubble Space Telescope has seen isolated stars when before we saw them as just a blur. 3) One of the brightest infrared sources in our sky is the nucleus of our galaxy, only about 10 light years across. 4) This makes it a very small ...
Astronomy Part 1 Regents Questions
... A) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving toward Earth. B) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving away from Earth. C) The star’s spectral lines have shifted toward the ...
... A) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving toward Earth. B) The star’s spectral lines have shifted toward the ultraviolet end of the spectrum and the star is moving away from Earth. C) The star’s spectral lines have shifted toward the ...
The Essential Cosmic Perspective, 6e
... 2) Briefly explain what we mean by the statement "The farther away we look in distance, the further back we look in time." Answer: It means that when we look at a distant object, we see it as it was some time in the past, rather than as it is now. This is because the light we see has taken time to t ...
... 2) Briefly explain what we mean by the statement "The farther away we look in distance, the further back we look in time." Answer: It means that when we look at a distant object, we see it as it was some time in the past, rather than as it is now. This is because the light we see has taken time to t ...
–1– 2. Milky Way We know a great deal, perhaps more than any
... Using star counts from the SLOAN digital sky survey, Chen et al. (2001) found that the Sun is about 27 pc above the Galactic plane. Furthermore, the vertical distribution of stars in the solar neighborhood can be approximated by the sum of two exponentials. These were identified as a thin disk and a ...
... Using star counts from the SLOAN digital sky survey, Chen et al. (2001) found that the Sun is about 27 pc above the Galactic plane. Furthermore, the vertical distribution of stars in the solar neighborhood can be approximated by the sum of two exponentials. These were identified as a thin disk and a ...
Chapter 18 The Interstellar Medium - University of Texas Astronomy
... “Nebula” is a general term used for fuzzy objects in the sky: Dark nebula: Dust cloud Emission nebula: Glows, due to emission lines from gas heated by hot young stars (a way to find where stars have recently formed). Emission nebulae generally glow red—this is the Hα line of hydrogen. But others shi ...
... “Nebula” is a general term used for fuzzy objects in the sky: Dark nebula: Dust cloud Emission nebula: Glows, due to emission lines from gas heated by hot young stars (a way to find where stars have recently formed). Emission nebulae generally glow red—this is the Hα line of hydrogen. But others shi ...
as a PDF
... liquid crystal. It happens because there are two default orientations which the liquid crystal can take. In many instances these defects can be removed by a thermal cycling procedure. We have performed this procedure on one of the spare FLC modulators at ETH Zurich. These tests indicates that therma ...
... liquid crystal. It happens because there are two default orientations which the liquid crystal can take. In many instances these defects can be removed by a thermal cycling procedure. We have performed this procedure on one of the spare FLC modulators at ETH Zurich. These tests indicates that therma ...
XLII RENCONTRES DE MORIOND WORKSHOP ON …
... • Pre-Swift - about 1.4
• Early Swift - about 2.8 (in 2005-2006)
• Swift is more sensitive to higher-z longer duration
...
... • Pre-Swift -
The science case for - Astrophysics
... Can we meet the grand challenge to trace star formation back to the very first star ever formed? By discovering and analysing distant galaxies, gas clouds, and supernovae, the history of star formation, and the creation history of the chemical elements can be quantified. What were the first objects? ...
... Can we meet the grand challenge to trace star formation back to the very first star ever formed? By discovering and analysing distant galaxies, gas clouds, and supernovae, the history of star formation, and the creation history of the chemical elements can be quantified. What were the first objects? ...
The Teleological Argument - University of Colorado Boulder
... not be odd to think that the stone had just occurred naturally, and had always been there. On the other hand, if you found a pocket watch, you would never think that it had just always been there, occurring naturally. Paley suggests that the reason for this is that the pocket watch shows evidence of ...
... not be odd to think that the stone had just occurred naturally, and had always been there. On the other hand, if you found a pocket watch, you would never think that it had just always been there, occurring naturally. Paley suggests that the reason for this is that the pocket watch shows evidence of ...
Feb 2015 - Bluewater Astronomical Society
... the sides of the raised section shows signs of clear layering, along with fractures cross-cutting in many orientations. In the foreground, several large angular blocks are seen, some with faces that appear brighter than the surrounding material. In the background, a faint stream of gas and dust can ...
... the sides of the raised section shows signs of clear layering, along with fractures cross-cutting in many orientations. In the foreground, several large angular blocks are seen, some with faces that appear brighter than the surrounding material. In the background, a faint stream of gas and dust can ...
Gamma-Ray Bursts: The Brightest Explosions in the Universe Arne
... SPEED OF LIGHT - UNIFICATION THEORIES OF RELATIVITY AND QUANTUM MECHANICS ALLOW THE SPACE TO BE FOAMY -> HIGH-ENERGY GAMMA-RAYS MOVE SLOWER THAN LOW-ENERGY PHOTONS ...
... SPEED OF LIGHT - UNIFICATION THEORIES OF RELATIVITY AND QUANTUM MECHANICS ALLOW THE SPACE TO BE FOAMY -> HIGH-ENERGY GAMMA-RAYS MOVE SLOWER THAN LOW-ENERGY PHOTONS ...
Constraining the star formation histories of spiral bulges
... possibility is an initial mass function (IMF) biased towards highmass stars in the early stages of galaxy formation. In this scenario the first few generations of stars generate large quantities of metals (Gibson & Matteucci 1997; Vazdekis et al. 1997). Alternatively, a period of star formation (SF) ...
... possibility is an initial mass function (IMF) biased towards highmass stars in the early stages of galaxy formation. In this scenario the first few generations of stars generate large quantities of metals (Gibson & Matteucci 1997; Vazdekis et al. 1997). Alternatively, a period of star formation (SF) ...
The Swift satellite lives up to its name, revealing cosmic
... stringent limits, and together with the elliptical host galaxy this provided evidence in support of an origin for short bursts which is completely different from the massive star origins of their long-duration cousins: the compact binary merger scenario. This scenario was proposed for the origin of ...
... stringent limits, and together with the elliptical host galaxy this provided evidence in support of an origin for short bursts which is completely different from the massive star origins of their long-duration cousins: the compact binary merger scenario. This scenario was proposed for the origin of ...
STELLAR AGE VERSUS MASS OF EARLY
... performed visually by allowing age steps of 0.05 dex. The age range was then kept fixed for the other colors (middle and bottom panel). We see from the top panel of Fig. 2 that the SSP of HPL07 exceeds the observed color range at intermediate ages. This is no surprise, though: since the reddest colo ...
... performed visually by allowing age steps of 0.05 dex. The age range was then kept fixed for the other colors (middle and bottom panel). We see from the top panel of Fig. 2 that the SSP of HPL07 exceeds the observed color range at intermediate ages. This is no surprise, though: since the reddest colo ...
A-level Physics A Question paper Unit 05 - (A) Section 2
... Explain what is meant by the quantum efficiency of a CCD. ...
... Explain what is meant by the quantum efficiency of a CCD. ...
Supernovae and cosmology
... II-P (light intensity stays constant for some time) II-L (linear decrease in light intensity) IIpec (strange lines in spectrum) ...
... II-P (light intensity stays constant for some time) II-L (linear decrease in light intensity) IIpec (strange lines in spectrum) ...
Exploring the Universe
... – Hottest stars are blue, coolest are red – Hertzspurg-Russel diagram classifies stars • 90° of stars are called the main sequence • Other stars include red giants, supergiants, and dwarfs ...
... – Hottest stars are blue, coolest are red – Hertzspurg-Russel diagram classifies stars • 90° of stars are called the main sequence • Other stars include red giants, supergiants, and dwarfs ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.