... satvelsrc computes as a function of time the component of the spacecraft velocity vector in the direction of given celestial source. ... SAS_ODF . or named via the generic command line parameters -o or -odfdir (see taskmain for details). ... The source coordinates obtained from the ODF can be overridden with the command line paramters withsrccoord=yes srcra=<ra> srcdec=<dec> and withorthosrc=yes defines a fictitious source in the direction perpendicular to the orbital plane. ...

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

GRANAT is the Russian x-ray sattelite launched to the high apogee orbit (200,000 km) and operated almost for 10 years (1989 -1999) , carrying out four major instruments: French SIGMA coded-mask hard x-ray telescope (30-1000 keV), Soviet ART-P coded-mask telescope (2??-60?? keV), all-sky monitor WATCH (6-150 keV), and a gamma-burst detector PHEBUS . ... Since September 1994, GRANAT is in the survey mode. ... Explore pages devoted to individual GRANAT instruments (including main scientific results): . ...

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Asteroid . ... Site . ... The evening of October 26, 2011, Mark Trueblood, Robert Crawford, and Larry Lebofsky used the Kitt Peak 2.1-m telescope to observe Near Earth Asteroid (NEA) 2008 QT3. ... single still jpeg frame . ... The National Optical Astronomy Observatory (NOAO) issued a press release concerning Morgan's work on Monday, November 21, 2011 and posted it on the home page of their web site . ... 2013 Winer Observatory. ...

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

... A further spin off of this project is that more reliable pointing information for all exposures is provided. In 1995 the ST-ECF introduced, along with the CADC, the re-calibration on-the-fly (OTF) of archived HST exposures. ... By correlating the HST Mission Schedule and the time-tagged engineering telemetry data stream downloaded from HST it is possible to reconstruct with great accuracy the pointing sequence of any given scientific observation. ... taken within the same HST visit . ...

T1650 2002-Jan-28 13:31:52 Technical Page Proposal Type: Regular General Category: Terrestrial Aeronomy Sub-Category: Radar Observation Category: Galactic Total Time Requested: 20 Hours Proposal Title: Observation of the Ulysses/Galileo Dust stream at 1 AU ABSTRACT: We propose to observe and study, utilizing the 430 MHz Arecibo radar, the micrometeor ux associated with the interstellar dust stream detected by the Ulysses and Galileo spacecraft. ... Maybe Part of the observing run. ...

Allocation of Tidbinbilla 70m time for ATNF proposals NASA allocate approximately 300 hours per year of Host Country time on the 70m antenna. This time is used for single-dish and LBA observations. ... This is far from ideal given 6 month terms for ATNF, which must be scheduled about two months in advance of the term starting, compared to JPL scheduling which goes out to only about 4 months in the future. ... The details of the Deep Space Network schedules are defined about four months in advance. ...

Next: Data reduction Up: Spectral observations and data Previous: SAO 6m observations . Further follow-up spectroscopy was made during nights May 30 - June 4, 1995, using the Boller & Chivens spectrograph attached to the Cassegrain focus of the Calar Alto 2.2m telescope. ... The observations were complemented by standard star flux measurements, lamp exposures for wavelength calibration, dome flats, bias and dark frames. ...

The target is a new candidate qLMXB found in the J1655 field of the ChaMPlane survey. ... Use SDSS u,g,r,i,z to take light curves continuously. 3-5min exposures. ... Skyflats: Take twilight skyflats starting shortly after sunset at around 6:00pm. ... Take the first Ha skyflats with adjusted exposure time (remember to turn the tracking on during exposure and off during readout). ... Take the first I filter skyflat with exposure time equal to 1/10 of the last Ha skyflat exposure. ...

2007 # # Try to simplify some of the alma simulator code import numpy from itertools import izip from almaconfparse import * def ExportUVFits (fnamein, fnameout): Wrap the casa command of the same name if os.access(fnameout, os.F_OK ) : os.remove(fnameout) default( exportuvfits ) exportuvfits (fnamein, fnameout) def SetupSM(smi, antennalist , startfreq, ...

... Observatory . ... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > How do I find out the exposure time for a given observation? ... Science Users Information . Observing Facilities . ... Paranal Facilities . ... Instrumentation Development . Future Facilities and Development . ... Observing with ESO Telescopes . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ...

Astronomy Picture of the Day . ... 11.10.2000 . ... Credit: Cassini Imaging Team , Cassini Project , NASA Explanation: A new spacecraft has entered the outer Solar System: Cassini . Launched in 1997 and bound for Saturn in 2004, Cassini sent back the above image last week while approaching the giant planet Jupiter . ... October 2000 . ... 1997 1998 . ... Publications with keywords: Jupiter - spacecraft - cassini spacecraft . Publications with words: Jupiter - spacecraft - cassini spacecraft . ...

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

Educator's Guide to Robotic Spacecraft . ... Spacecraft are complex, technological objects that have to function far from Earth in the harsh environment of space. ... If the students are familiar with spacecraft they can be prompted with body parts and attempt to identify the analogous spacecraft part. This will work well if the students have a high quality picture of a modern spacecraft. ... Identify a mission and a destination for a spacecraft and have teams of students design the spacecraft. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The interface between the lower solar atmosphere where energy is generated by subsurface convection and the corona comprises the chromosphere, which is dominated by jet-like, dynamic structures, called mottles when found in quiet regions, fibrils when found in active regions and spicules when observed at the solar limb. ... In addition, how they affect the coronal heating and solar wind need to be further explored. ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Astronomy for Kids . ... MAVEN spacecraft returns first Mars observations . ... NASA s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has obtained its first observations of the extended upper atmosphere surrounding Mars. ... MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... Eugene A. Cernan (Captain, USN, Ret.) NASA Astronaut (former) . ... Cernan subsequently served as backup pilot for Gemini 12 and as backup lunar module pilot for Apollo 7. On his second space flight, he was lunar module pilot of Apollo 10, May 18-26, 1969, the first comprehensive lunar-orbital qualification and verification flight test of an Apollo lunar module. ... Captain Cernan has logged 566 hours and 15 minutes in space-of which more than 73 hours were spent on the surface of the moon. ...