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Kentucky Monthly - Cold Spring Observatory
Kentucky Monthly - Cold Spring Observatory

... is good and unique that we possess that we want to give.” In the beginning, the club used Timerding’s personal binoculars and a telescope. After writing letters to telescope makers and distributors, they obtained equipment that was a little more sophisticated. Now they have a club telescope that all ...
Homework 4 1 Chapter 3 October 4, 2011
Homework 4 1 Chapter 3 October 4, 2011

... particles. All of the planets would have formed from accretion (a bunch of particles sticking together after collisions). This process begins with condensation, when the first small particles form out of the gas. The key point is that different materials condense at different temperatures, and in pa ...
Events: - Temecula Valley Astronomers
Events: - Temecula Valley Astronomers

... reasonably dark skies but close enough not to scare off anyone off. The best time is 3-6 days after a new moon and with luck, at least one planet will be up. As the sun sets, I try to point out the first stars visible - usually the summer triangle. I talk about constellations and asterisms. Once the ...
Searching for Dwarf Galaxies and Population III Star
Searching for Dwarf Galaxies and Population III Star

... Authors: Elizabeth J. Barton, Center for Cosmology, University of California, Irvine Abstract: Metal-free stars in the early universe will inhabit regions of space that have not yet been chemically enriched by earlier supernovae. However, the easiest regions to characterize at early times are volume ...
Kepler
Kepler

... The scientific objective of the Kepler Mission is to explore the structure and diversity of planetary systems. This is achieved by surveying a large sample of stars to: • Determine the percentage of terrestrial and larger planets there are in or near the habitable zone of a wide variety of stars; • ...
The Solar System (Ch. 6 in text) The solar system consists of the Sun
The Solar System (Ch. 6 in text) The solar system consists of the Sun

... several techniques available, but we’ll just discuss a few. 1. Direct detection—not possible at present. Reflected light from planet is about a billion times less than that of the star (less in the infrared, but still about a million or more—see illustration below), and the distance from the planet ...
TELESCOPE CONCEPTS SUPER VIEWS OF SPACE
TELESCOPE CONCEPTS SUPER VIEWS OF SPACE

Spectroscopy
Spectroscopy

... If we see the star wiggle between red and blueshift over a period of years, we know planets must be orbiting the star. ...
AST301.Ch6.15.SolarSystems - University of Texas Astronomy
AST301.Ch6.15.SolarSystems - University of Texas Astronomy

... several techniques available, but we’ll just discuss a few. 1. Direct detection—not possible at present. Reflected light from planet is about a billion times less than that of the star (less in the infrared, but still about a million or more—see illustration below), and the distance from the planet ...
M = 5.5 - The Millstone
M = 5.5 - The Millstone

... Absolute Magnitude, we must have a measure of the stellar distance (by other means). Absolute magnitude, M, expresses the brightness of a star as it would be if it were placed 10 parsecs away. Since all stars would be placed at the same distance, absolute magnitudes show differences in actual lumino ...
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... – 5 kpc versus 900 pc for nine galaxies • 5 local galaxies have two nuclei separated by 4-32 kpc • These galaxies are at faint luminosity end of our sample ...
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Chapter 25 Our Solar System - Information Technology Florida Wing
Chapter 25 Our Solar System - Information Technology Florida Wing

... very elliptical orbit and moves approximately 30 miles per second. Mercury rotates very slowly and its “day” is 59 Earth days. Mercury has a rocky, crust surface with many craters. This gives it the appearance much like our Moon. Many of these craters were formed when space objects crashed into its ...
The Quest for Object X - Department of Physics and Astronomy
The Quest for Object X - Department of Physics and Astronomy

... detect up there. It’s like the puzzles in the “Where’s Waldo?” books, which ask the reader tries to find one person in a crowd of thousands—you can stare straight at the object you’re looking for, yet fail to find what’s right before your eyes. To appreciate the difficulty of discovering something o ...
OBJXlab
OBJXlab

... detect up there. It’s like the puzzles in the “Where’s Waldo?” books, which ask the reader tries to find one person in a crowd of thousands—you can stare straight at the object you’re looking for, yet fail to find what’s right before your eyes. To appreciate the difficulty of discovering something o ...
the search for object x
the search for object x

Guidestar: February, 2015 - Houston Astronomical Society
Guidestar: February, 2015 - Houston Astronomical Society

... February 6th meeting to get your 2015 code. We will soon be putting the site orientation program on the website. In doing so we are going to ask everyone who already has taken the course to take a refresher course. When you complete the course and pass the 10 or so question quiz the data base will a ...
MS Word file
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... If you rise before the Sun, you will see the crescent Moon very close to Saturn toward the east, plus Mars near the zenith and Venus just rising in the east. Peak of the Leonid meteor shower (a time when you can see more shooting stars than usual); astronomers are predicting an especially good one t ...
This document was created for people who do not have access to
This document was created for people who do not have access to

... of North America, the Crab Nebula would be approximately one quarter of a mile across and 160 miles away from our Solar System. The Crab Nebula is the remains of an exploded star that was once 8-12 times the mass of our Sun. Very massive stars end their lives in a gigantic explosion, known as a supe ...
Today`s Powerpoint
Today`s Powerpoint

... Rotation of the Disk Sun moves at 225 km/sec around center. An orbit takes 240 million years. Stars closer to center take less time to orbit. Stars further from center take longer. => rotation not rigid like a phonograph record or a merry-go-round. Rather, "differential rotation". Over most of disk ...
ph507lecnote07
ph507lecnote07

... After a few hundred million years, a planetary system is expected to have assumed its final configuration and has either set the stage for life, or will probably remain barren forever. It is difficult to probe this era. Most of its traces have been obliterated in the solar system. Only a minority of ...
The Solar System (Ch. 6 in text) Consists of the sun (a typical star
The Solar System (Ch. 6 in text) Consists of the sun (a typical star

... several techniques available, but we’ll just discuss a few. 1. Direct detection—not possible at present. Reflected light from planet is about a billion times less than that of the star (less in the infrared, but still about a million or more—see illustration below), and the distance from the planet ...
Lecture Eight (Powerpoint format) - Flash
Lecture Eight (Powerpoint format) - Flash

... Molecules in Space  Instead, astronomers found that molecules were very common in interstellar space -- particularly CO and NH3.  The most common molecule in interstellar space -- H2 -- doesn’t emit this type of radio emission and so is nearly invisible. CO Map of Horsehead Nebula (BIMA/M. Pound) ...
The Case against Copernicus
The Case against Copernicus

... really was revolving around the sun, the absence of annual parallax would imply that the diameter of its orbit (Copernicus called it the o rbis magnus) was itself as nothing, “as a point,” compared with stellar distanc- ...
Infrared spatial interferometer (ISI) scientists, technicians, students
Infrared spatial interferometer (ISI) scientists, technicians, students

... V. Toy B. Walp J. Weiner* R.H. Weitzman E.H. Wishnow ...
< 1 ... 71 72 73 74 75 76 77 78 79 ... 214 >

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.
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