... ACS Instrument Handbook . ... Advanced Camera for Surveys Instrument Handbook for Cycle 20 > Chapter 9: Exposure-Time Calculations > 9.1 Overview . ... In this chapter we explain how to use sensitivities and throughputs to determine the expected count rate from your source and how to calculate exposure times to achieve a given signal-to-noise ratio for your ACS observations taking all background contributions into account. ... The ACS ETC is available to help with proposal preparation at: . ...

... You are here: start €Ё lbaops €Ё special-vlba-lba-2012-notes . ... VLBI Schedule . ... Active proposals . ... Observer's Wiki . ... Other VLBI . ... lbaops:special-vlba-lba-2012-notes . Notes from the VLBA meeting 22 Feb 2012. ... In February 2011, a meeting of all institutions around the world with interest in VLBI €аwas held in Socorro to discuss the future of the VLBA. ... For many institutions, such contributions were only possible if guaranteed time was made available on the VLBA. ...

I'm glad you're interested in collaborating on the ConcepTests for Astronomy WWW database project! ... I'm looking forward to your contributions! ... a) high luminosity, high temperature to low luminosity, low temperature . b) high luminosity, low temperature to low luminosity, low temperature . c) high luminosity, low temperature to low luminosity, high temperature . d) high luminosity, high temperature to low luminosity high temperature. ... Back to Paul Green's Peer Instruction page. ...

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

... Improved measurements of Sun to advance understanding of climate change . ... We are eager to see how this lower irradiance value affects global climate models, which use various parameters to reproduce current climate, incoming solar radiation is a decisive factor,т?? said Lean. т??An improved and extended solar data record will make it easier for us to understand how fluctuations in the Sun's energy output over time affect temperatures, and how Earth's climate responds to radiative forcing." ...

... December 28, 1998 . NEAR to Asteroid Eros . Credit: NEAR Spacecraft Team , JHU APL , NASA . Explanation: On December 23, the NEAR spacecraft flew by asteroid 433 Eros . ... NEAR will now be reset and attempt to return to orbit Eros in early 2000. ... When NEAR is fully operational, it will likely provoke the world's largest telescopes to point not toward asteroid Eros but to positions indicated by another of NEAR's instruments: its gamma-ray burst (GRB) detector . ... About APOD > . ...

NEAR to Asteroid Eros . ... Credit Copyright: NEAR Spacecraft Team , JHU APL , NASA Explanation: On December 23, the NEAR spacecraft flew by asteroid 433 Eros . ... NEAR will now be reset and attempt to return to orbit Eros in early 2000. ... When NEAR is fully operational, it will likely provoke the world's largest telescopes to point not toward asteroid Eros but to positions indicated by another of NEAR's instruments: its gamma-ray burst (GRB) detector . ... NASA Official: Jay Norris. ...

... A major part of it is done by QC Garching, another part is done as on-line QC by Paranal staff. ... Mission goals: · see the process · understand the process · improve the process Prepare: · list of items to be discussed · list of questions you have · list of proposals · cross-check with supervisor if in doubt · ask your colleagues if you are on a first-time mission Come: · in a positive spirit; usually your visit will be much appreciated · don ... Log in as `pipeline'. ...

Next: Mission Element Points-of-Contact . Previous: Mission Operations Data Transfer . ... Each mission element should ensure that their contact information remains current and notify the RSOG of any changes. ... Non-RSOG mission elements will also use the "dit" list to notify the RSOG (and all other mission elements) of unexpected events that may impact operations elsewhere, e.g., if a tracking station discovers that the spacecraft is in an unexpected configuration. ...

... Astrophysics Group . ... Integration of the NIRSpec instrument . ... SKA AAVS0 array . ... One of the major milestones for the James Webb Space Telescope (JWST) has been, in September 2013, the completion by ESA of NIRSpec, the first multi-object spectrograph to be operated in space. ... Cambridge, and in particular the Cavendish Astrophysics Group and the Kavli Institute for Cosmology, is heavily involved in NIRSpec by hosting one of the Instrument Science Team members (R. Maiolino). ...

... XMM-Newton SOC Home Page Conferences & Meetings . ... Data Analysis SAS News What is SAS? How to use SAS SAS Workshops SAS Version Changes Download and Install SAS Science Simulator (SciSim) . ... EPIC cameras optical loading . ... The PI is invited to cross-check the expected X-ray flux from the target source (and from any other potentially bright source in the target field of view), or to provide the SOC with her/his own estimate, if not originally specified in the proposal. ...

... Galileo Probe . The Galileo spacecraft was designed to study Jupiter's atmosphere, satellites, and surrounding magnetosphere for two years. ... From there, Galileo will spend more than five years traveling to Jupiter, where it will become the first spacecraft to make direct measurements from an instrumented probe within Jupiter's atmosphere. ... This image, taken by the Hubble Space Telescope, shows the predicted site at which the Galileo Probe will enter Jupiter's atmosphere on December 7, 1995. ...

Going Deep with ALFA E-ALFA Ultra-deep field group February 17, 2004 Abstract The improved sensitivity, RFI excisions and baselines expected with ALFA will open a new area of high sensitivity observations for the Arecibo Telescope. There is a significant scientific interest in single sight-line observations to unprecedented depth with integration times up to about 100 hours per beam. ... The total proposed integration time is 35 hours per beam. ... Higher sensitivity to unresolved sources. ...

Next: The Present Situation in Up: No Title Previous: Case A: . Why it is possible that the Oppenheimer-Volkoff limit exceeds ? ... The lifetime of HSP (``hot'' spinar) is completely determined by the cooling time which is of the order of s according to different calculations. ... It seems very attractive to identify this cooling time with the mean characteristic gamma-ray burst duration s! . ... Finally, for the high Oppenheimer-Volkoff limit for the cool non-rotating object, when . ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . ... These measuring instruments together with the developed methods of biosensor conservation for long periods of time allow to execute on-line monitoring of toxicity of the solutions and water on the orbital station. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... Planets . ... Earth Satellites . ... The newly discovered ?mega-Earth? ... Its sibling, the lava world Kepler-10b, is in the background (the two planets? proximity is grossly exaggerated) .€а Kepler-10c has a diameter of about 29 000 km, 2.3 times as large as Earth, and weighs 17 times as much. ... The first mega-earth to be discovered is Kepler-10c which orbits a star lying about 560 light years from the Sun in the constellation Draco. ... Astronomers Find a New Type of Planet: The ?Mega-Earth? ...

... In the context of the autonomous TAROT observatory we have developed an automatic scheduling software. ... With the advent of automatic telescopes and the use in service mode of large facilities, the problem of efficient night scheduling is becoming more important. ... However, we encountered some difficulties handling periodic or constrained requests with a large time interval, and it is unable to give to the telescope users and operators the visibility over the schedule. ...

Target: Venus . The Soviet VEGA Spacecraft Two remarkable "busloads" of automated spacecraft were launched toward Venus by the Soviet Union in December of 1984. Each one contains three separate modules: one lander and one balloon-carried atmosphere probe to be dropped off at Venus in June, 1985, and one major package of instruments which will continue on to encounter Halley's Comet in March, 1986. ... Venus and Earth: A Comparison . Earth . ... in Earth days) . ... 243 Earth days . ...

... Galileo Probe . The Galileo spacecraft was designed to study Jupiter's atmosphere, satellites, and surrounding magnetosphere for two years. ... From there, Galileo will spend more than five years traveling to Jupiter, where it will become the first spacecraft to make direct measurements from an instrumented probe within Jupiter's atmosphere. ... This image, taken by the Hubble Space Telescope, shows the predicted site at which the Galileo Probe will enter Jupiter's atmosphere on December 7, 1995. ...

... He made observations of a supernova (literally: nova= "new star") in 1572 (we now know that a supernova is an exploding star, not a new star). ... Brahe's meticulous observations showed that the supernova did not change positions with respect to the other stars (no parallax). ... This was early evidence against the immutable nature of the heavens, although Brahe did not interpret the absence of parallax for stars correctly, as we discuss below. Brahe made careful observations of a comet in 1577. ...