Studying Variable stars using Small Telescopes Observational
... Long-term variations In addition to the short-term variation due to rotational modulation of stellar brightness in rotating variables, it is believed that there should also exist a systematic long-term variations. These long-term variations or Stellar Activity Cycles are very similar to the solar 11 ...
... Long-term variations In addition to the short-term variation due to rotational modulation of stellar brightness in rotating variables, it is believed that there should also exist a systematic long-term variations. These long-term variations or Stellar Activity Cycles are very similar to the solar 11 ...
A Telescope Operating Manual
... The field of view of the Celestron telescope is relatively small even at low powers. Finding even bright objects without some optical aid is difficult. Finding fainter objects would be a matter of luck, even for the skilled observer. To overcome this limitation the telescope is equipped with an exce ...
... The field of view of the Celestron telescope is relatively small even at low powers. Finding even bright objects without some optical aid is difficult. Finding fainter objects would be a matter of luck, even for the skilled observer. To overcome this limitation the telescope is equipped with an exce ...
11Oct2004 - Division of Geological and Planetary Sciences
... Richter et al. (2004), in preparation. Spitzer IRS? ...
... Richter et al. (2004), in preparation. Spitzer IRS? ...
(1) (2) (3) Two star polar alignment Ralph Pass October 7, 2003
... It is pretty easy to do the alignment (except for the calculations). I have done two iterations of this procedure and have gotten computed alignment errors of less than one arc minute. I will typically choose the first star at an hour angle of 3 hours (or - 3 hours) and declination of about 43o. I t ...
... It is pretty easy to do the alignment (except for the calculations). I have done two iterations of this procedure and have gotten computed alignment errors of less than one arc minute. I will typically choose the first star at an hour angle of 3 hours (or - 3 hours) and declination of about 43o. I t ...
Natural Regions Near the Collinear Libration Points Ideal for Space
... Studying these trajectories yields some insight into the behavior of a formation of spacecraft in this region. First, extensive computations of quasi-periodic Lissajous trajectories near the telescope orbit are completed. Arcs along the Lissajous trajectories are analyzed and viewing spheres at vari ...
... Studying these trajectories yields some insight into the behavior of a formation of spacecraft in this region. First, extensive computations of quasi-periodic Lissajous trajectories near the telescope orbit are completed. Arcs along the Lissajous trajectories are analyzed and viewing spheres at vari ...
On the Nature of the Dust in the Debris Disk Around HD69830
... announcement that three Neptune mass planets orbit within 0.63 AU of the star (Lovis et al. 2006). With an estimated age of 3 - 10 Gyr, a near-solar primary (T* ~ 5385 K, L* = 0.60 Lsolar, M* ~ 0.86 Msolar, R* ~ 0.89 Rsolar), and a near solar metallicity ([Fe/H] = 0.015, Beichman et al. 2005; [Fe/H] ...
... announcement that three Neptune mass planets orbit within 0.63 AU of the star (Lovis et al. 2006). With an estimated age of 3 - 10 Gyr, a near-solar primary (T* ~ 5385 K, L* = 0.60 Lsolar, M* ~ 0.86 Msolar, R* ~ 0.89 Rsolar), and a near solar metallicity ([Fe/H] = 0.015, Beichman et al. 2005; [Fe/H] ...
Planets
... their own light Planets don't emit light, but do reflect sunlight Problem: reflect a billionth or less of the light from the companion star ...
... their own light Planets don't emit light, but do reflect sunlight Problem: reflect a billionth or less of the light from the companion star ...
PowerPoint プレゼンテーション
... ~200. Since Td would be higher around Herbig Ae stars, f(CO) would be less than 200. ...
... ~200. Since Td would be higher around Herbig Ae stars, f(CO) would be less than 200. ...
Is Pluto Real - Jesseca Rough
... demonstration and had the kids get up and run around. If I could change anything I would have moved the discussion indoors due to the heat and discarded the math stuff completely. I also would have invited more people because we actually had a fun time and my stage fright was gone by the end of it. ...
... demonstration and had the kids get up and run around. If I could change anything I would have moved the discussion indoors due to the heat and discarded the math stuff completely. I also would have invited more people because we actually had a fun time and my stage fright was gone by the end of it. ...
September 3, 2013
... Its location is easy to find just inside the Great Square of Pegasus. But you'll need a moderately large telescope and a good sky; the cluster's brightest member, giant NGC 7768, appears 12th or 13th magnitude. If you succeed, could this be your record-farthest galaxy? The cluster is 300 million lig ...
... Its location is easy to find just inside the Great Square of Pegasus. But you'll need a moderately large telescope and a good sky; the cluster's brightest member, giant NGC 7768, appears 12th or 13th magnitude. If you succeed, could this be your record-farthest galaxy? The cluster is 300 million lig ...
Diffuse Ultraviolet Emission in Galaxies
... P Cygni’s spectrum is quite unlike that of most stars. Typically, a stellar spectrum will feature numerous dark “absorption” lines, which are produced by atoms in its outer layers absorbing certain wavelengths of light emitted from below. A star’s spectrum may also exhibit bright “emission” lines—th ...
... P Cygni’s spectrum is quite unlike that of most stars. Typically, a stellar spectrum will feature numerous dark “absorption” lines, which are produced by atoms in its outer layers absorbing certain wavelengths of light emitted from below. A star’s spectrum may also exhibit bright “emission” lines—th ...
Pluto_Friends
... • The “problem” of being first: Ceres & Pluto • Hubble observations of Ceres, another dwarf planet • New Horizons and Dawn missions: follow the data, not the voting • Inspiring students, and “teachable moments” ...
... • The “problem” of being first: Ceres & Pluto • Hubble observations of Ceres, another dwarf planet • New Horizons and Dawn missions: follow the data, not the voting • Inspiring students, and “teachable moments” ...
F P US R
... The Seyfert 2 galaxy NGC 4258 has a sub-pc scale accretion disk in its nucleus that can be traced by VLBI imaging of its H2O maser emission. Hernstein et al (1999, Nature, 400, 539) determined a highly accurate geometric distance of 7.2 Mpc for this galaxy. Since the recessional velocity of NGC 4258 ...
... The Seyfert 2 galaxy NGC 4258 has a sub-pc scale accretion disk in its nucleus that can be traced by VLBI imaging of its H2O maser emission. Hernstein et al (1999, Nature, 400, 539) determined a highly accurate geometric distance of 7.2 Mpc for this galaxy. Since the recessional velocity of NGC 4258 ...
ppt
... few galaxies (1-2 Mpc). Even Hubble Space Telescope cannot find Cepheids beyond the Virgo cluster (16 Mpc). Beyond 1-2Mpc, Hubble used… ...
... few galaxies (1-2 Mpc). Even Hubble Space Telescope cannot find Cepheids beyond the Virgo cluster (16 Mpc). Beyond 1-2Mpc, Hubble used… ...
Fatal Fling Solar Plasma at a Slow Pace - Max-Planck
... Max Planck scientists discover a young neutron star with an unusually restless rotation Pulsars are exceptional cosmic lighthouses. Compact neutron stars rotate several times a second about their own axes, making them appear to flash. In an international cooperative study, researchers at the Max Pla ...
... Max Planck scientists discover a young neutron star with an unusually restless rotation Pulsars are exceptional cosmic lighthouses. Compact neutron stars rotate several times a second about their own axes, making them appear to flash. In an international cooperative study, researchers at the Max Pla ...
a new isotopic abundance anomaly in chemically peculiar stars
... UVES spectra of a different variety of CP stars. Wavelengths of the infrared triplet were available for several of them. Interestingly, the Ca II lines in the most peculiar of their stars, the notorious Przybylski’s star, appeared to show the 48Ca shifts. When another spectrum of the same star, obta ...
... UVES spectra of a different variety of CP stars. Wavelengths of the infrared triplet were available for several of them. Interestingly, the Ca II lines in the most peculiar of their stars, the notorious Przybylski’s star, appeared to show the 48Ca shifts. When another spectrum of the same star, obta ...
Astronomy Puzzle-1
... 3. An event in which Moon covers all the Sun but a bright ring around the circumference can be seen.. 4. An event that occurs when the Earth passes between the Sun and the Moon so that the Moon is wholly or partially obscured sometimes giving orange colour to the moon. 5. The position of two celesti ...
... 3. An event in which Moon covers all the Sun but a bright ring around the circumference can be seen.. 4. An event that occurs when the Earth passes between the Sun and the Moon so that the Moon is wholly or partially obscured sometimes giving orange colour to the moon. 5. The position of two celesti ...
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) ...
... 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) ...
Imaging with multi-aperture optical telescopes and an
... case, one advantage of the Michelson instrument is its compactness: its volume roughly varies as the square of the baseline while for a Fizeau it varies as the cube because the distance between the primary mirror segments and the common secondary is of the order of the primary mirror diameter. There ...
... case, one advantage of the Michelson instrument is its compactness: its volume roughly varies as the square of the baseline while for a Fizeau it varies as the cube because the distance between the primary mirror segments and the common secondary is of the order of the primary mirror diameter. There ...
Compact Telescope for Free Space Communications
... tube lengths, as the distance between mirrors is slightly more than the sum of their focal lengths, which is the reason Cassegrain systems are the most common. In addition, Gregorian telescopes produce an upright image, while Cassegrain telescopes produce an inverted image. FSONA is presenting a new ...
... tube lengths, as the distance between mirrors is slightly more than the sum of their focal lengths, which is the reason Cassegrain systems are the most common. In addition, Gregorian telescopes produce an upright image, while Cassegrain telescopes produce an inverted image. FSONA is presenting a new ...
Power Point Kickoff Mtg
... system in place, with the capability to set the dome thermal environment to a temperature specified by the operator. That temperature will be based on predictions as to what the outside temperature will be during that evenings observing run. ...
... system in place, with the capability to set the dome thermal environment to a temperature specified by the operator. That temperature will be based on predictions as to what the outside temperature will be during that evenings observing run. ...
Measuring the Milky Way
... and there is no gas and dust. The Galactic disk is where the youngest stars are, as well as star formation regions – emission nebulae, large clouds of gas and dust. Surrounding the Galactic center is the Galactic bulge, which contains a mix of older and younger stars. ...
... and there is no gas and dust. The Galactic disk is where the youngest stars are, as well as star formation regions – emission nebulae, large clouds of gas and dust. Surrounding the Galactic center is the Galactic bulge, which contains a mix of older and younger stars. ...
Studies of young stellar objects (25+5)
... Sequence of images of radio jet at 3.6 cm Curiel et al. (2006) ...
... Sequence of images of radio jet at 3.6 cm Curiel et al. (2006) ...
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 ...
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.