The Lyman-alpha telescope of the Extreme Ultraviolet Imager
... the spacecraft to observe one specific area for much longer time than possible from an orbit close to Earth. Solar Orbiter is a three-axis stabilized spacecraft equipped with instruments for both in-situ measurements and remote-sensing observations from a highly elliptical orbit approaching the Sun ...
... the spacecraft to observe one specific area for much longer time than possible from an orbit close to Earth. Solar Orbiter is a three-axis stabilized spacecraft equipped with instruments for both in-situ measurements and remote-sensing observations from a highly elliptical orbit approaching the Sun ...
PPT - University of Arizona
... Earth’s atmosphere opaque for λ < 3200 Å silicon (ccds) transparent for λ > 9000 Å ...
... Earth’s atmosphere opaque for λ < 3200 Å silicon (ccds) transparent for λ > 9000 Å ...
Document
... Equatorial Mount. The arms of the fork mount point to the North Celestial Pole (North Star). An equatorial mount is a mount for instruments that follows the rotation of the sky (celestial sphere) by having one rotational axis parallel to the Earth's axis of rotation. ...
... Equatorial Mount. The arms of the fork mount point to the North Celestial Pole (North Star). An equatorial mount is a mount for instruments that follows the rotation of the sky (celestial sphere) by having one rotational axis parallel to the Earth's axis of rotation. ...
AAS_LongBeach_Pasach.. - Science Center
... Based on their study of the previous transit of Venus visible from Earth, in 2004, using a NASA spacecraft as well as their own ground-based observations, Pasachoff and Schneider concentrated their efforts on studying Venus's atmosphere. It becomes visible as a bright whisker or arc on the edge of V ...
... Based on their study of the previous transit of Venus visible from Earth, in 2004, using a NASA spacecraft as well as their own ground-based observations, Pasachoff and Schneider concentrated their efforts on studying Venus's atmosphere. It becomes visible as a bright whisker or arc on the edge of V ...
X-Ray Properties of Young Stars and Stellar Clusters
... symmetrical rise and fall morphologies, sometimes extending over 1–2 days (Wolk et al., 2005). It is possible that some of these variations are due to the stellar rotation where X-ray structures are emerging from eclipse, but they are currently poorly understood. By monitoring young stars with optic ...
... symmetrical rise and fall morphologies, sometimes extending over 1–2 days (Wolk et al., 2005). It is possible that some of these variations are due to the stellar rotation where X-ray structures are emerging from eclipse, but they are currently poorly understood. By monitoring young stars with optic ...
An Even More Precise View of Aluminum-26 in the Solar Nebula
... plus-or-minus about 100,000 years, on materials that formed more than 4.5 billion years ago. Aluminum-26 (26Al) fills the bill. It has a half-life of 730,000 years. This means, of course, that this original 26Al is gone now. A radioactive isotope decays to immeasurable amounts in about ten half-live ...
... plus-or-minus about 100,000 years, on materials that formed more than 4.5 billion years ago. Aluminum-26 (26Al) fills the bill. It has a half-life of 730,000 years. This means, of course, that this original 26Al is gone now. A radioactive isotope decays to immeasurable amounts in about ten half-live ...
The coronal temperatures of low-mass main
... X-ray observations from the NEXXUS database (Schmitt & Liefke 2004)1. NEXXUS is a database of X-ray measurements for nearby stars and provides a comprehensive compilation of ROSAT measurements, mostly from the ROSAT All-sky Survey (RASS). We collect X-ray luminosities and hardness ratios reported in ...
... X-ray observations from the NEXXUS database (Schmitt & Liefke 2004)1. NEXXUS is a database of X-ray measurements for nearby stars and provides a comprehensive compilation of ROSAT measurements, mostly from the ROSAT All-sky Survey (RASS). We collect X-ray luminosities and hardness ratios reported in ...
Document
... Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been detected in the TeV range by ground-based gamma-ray telescopes. All of them, except M87, are BL Lacs at z<0.2 (more p ...
... Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been detected in the TeV range by ground-based gamma-ray telescopes. All of them, except M87, are BL Lacs at z<0.2 (more p ...
FOTO Imaging - Cincinnati Observatory
... stable liquids on its surfaces," lead study author Jason Hofgartner, a ...
... stable liquids on its surfaces," lead study author Jason Hofgartner, a ...
Chapter 6. - Department of Physics & Astronomy
... • Launched in 1990; maintained and upgraded by several space shuttle service missions throughout the 1990s and early 2000’s • Avoids turbulence in Earth’s atmosphere • Extends imaging and spectroscopy to (invisible) infrared and ultraviolet ...
... • Launched in 1990; maintained and upgraded by several space shuttle service missions throughout the 1990s and early 2000’s • Avoids turbulence in Earth’s atmosphere • Extends imaging and spectroscopy to (invisible) infrared and ultraviolet ...
Jul y 10-12,
... Almost all Galactic black hole (BH) binaries with low mass donors are transient X-ray sources; we expect most of the X-ray transients (XRTs) observed in external galaxies to be BH binaries also. Obtaining period estimates for extra-galactic XRTs is challenging, but the resulting period distribution ...
... Almost all Galactic black hole (BH) binaries with low mass donors are transient X-ray sources; we expect most of the X-ray transients (XRTs) observed in external galaxies to be BH binaries also. Obtaining period estimates for extra-galactic XRTs is challenging, but the resulting period distribution ...
Today in Astronomy 102: black hole observations, v.2
... Discovery of “stellar” black holes: GRO J1655-40 GRO J1655-40 (a.k.a. Nova Scorpii 1994) is an X-ray transient source discovered by NASA’s Compton Gamma-Ray Observatory (GRO) in 1994. Rapidly-variable emission in its X-ray bursts: the X-ray object is a few hundred km around. The X-ray source ha ...
... Discovery of “stellar” black holes: GRO J1655-40 GRO J1655-40 (a.k.a. Nova Scorpii 1994) is an X-ray transient source discovered by NASA’s Compton Gamma-Ray Observatory (GRO) in 1994. Rapidly-variable emission in its X-ray bursts: the X-ray object is a few hundred km around. The X-ray source ha ...
EUS REVIEW TO PPARC JAN 2004 (Harrison)
... EUV spectroscopy to 2-3 arcsec. We know that the solar atmosphere is composed of fine-scale structures and must aim to develop appropriate tools. Our target is spectroscopy at ~70 km (0.5 arcsec at 0.2 AU, 0.1 arcsec at 1 AU). ...
... EUV spectroscopy to 2-3 arcsec. We know that the solar atmosphere is composed of fine-scale structures and must aim to develop appropriate tools. Our target is spectroscopy at ~70 km (0.5 arcsec at 0.2 AU, 0.1 arcsec at 1 AU). ...
telescope
... X-ray telescopes are composed of ring-shaped 'glancing' mirrors made of heavy metals that are able to reflect the rays. The second High Energy Astrophysics Observatory (HEAO-2), launched by NASA on 13 November 1978, was renamed the Einstein Observatory after orbit was achieved. It was the first ful ...
... X-ray telescopes are composed of ring-shaped 'glancing' mirrors made of heavy metals that are able to reflect the rays. The second High Energy Astrophysics Observatory (HEAO-2), launched by NASA on 13 November 1978, was renamed the Einstein Observatory after orbit was achieved. It was the first ful ...
SEPTEMBER LECTURE James W. Christy, discoverer of Charon
... By the end of April 22 they were convinced that Pluto has a sate llite ! Christy then checked all of the available plates taken of Pluto with the astrometric reflector... about 50- and found that the normal seeing disks on most were larger than the elongation. Only those taken under the very best se ...
... By the end of April 22 they were convinced that Pluto has a sate llite ! Christy then checked all of the available plates taken of Pluto with the astrometric reflector... about 50- and found that the normal seeing disks on most were larger than the elongation. Only those taken under the very best se ...
