ACS Insturment Handbook for Cycle 24 . ... Advanced Camera for Surveys Instrument Handbook for Cycle 24 > Chapter 10: Imaging Reference Material > 10.2 Using the Information in this Chapter . ... 10.2.2 Signal-to-Noise . 10.2.3 Point Spread Functions . ... This chapter contains plots of throughputs for each imaging mode, in Section 10.3.1 . Section 9.2 explains how to use these throughputs to calculate expected count rates from your source. ... from the source flux, using the relation , . ...

... region (region-6.2.2) [xmmsas_20030110_1802-5.4.1] . ... The region task will automatically determine the optimal source and background extraction regions for a detected source in an XMM observation. ... The regions are defined in sky coordinates. region will attempt to maximise the area of the extraction region for each source, whilst ensuring that the extraction regions of neighbouring sources do not overlap, and that the background extraction region for a given source excludes neighbouring...

This source is hiding behind our Galaxy at a distance of ~18 Mpc, located at a galactic latitide of 0 degrees. ... As we look towards longer wavelengths, 60 micron, to try and penetrate the Galactic Plane, we still see confusion from galactic sources. ... If the image seems some what confusing that is because the MOST is a continuum radio telescope and when it looks in the direction of our Galaxy it detects radiation from sources within our Galaxy and from sources that may lie behind our Galaxy. ...

SKA-3 instrument consists of two energy-angle ( EA ) electrostatic analyzers and two energy-mass ( EM ) time-of-flight analyzers. ... Here you can find more details about SKA-3 instrumentation set. ... Case 218 . ... satellite's trajectory in geomagnetic frame ( blue coloured), UFSIPS scan location and observation moment ( red coloured), interval of the SKA-3 observations ( green coloured) . ... a view of the Nothern polar region at the moment of UFSIPS observations, the scan location is red coloured. ...

Fiber-Optic-Taper CCD Cameras for X-ray Crystallography Application #1: Percent of X-ray photons detected Wide Angle Scattering of Monochromatic X-Rays From Complex Crystals such as Proteins. ... 1 10 Photon energy keV 100 Detection gain with a 2.3:1 taper ratio. ... The phosphor, taper, and CCD are all enclosed in a vacuum chamber, 80 Shuttering and Synchronization Electrical timing signals are available from the camera controller, for synchronization with a customer provided X-ray shutter. ...

... These sources are much more likely to be gravitationally lensed by intervening galaxies as compared with sources discovered in surveys in other wavebands. ... The effect of lensing by clusters is then discussed briefly. This is expected to increase the source confusion noise in a Planck survey in the directions of clusters, and could provide information about galaxies with flux densities that are too faint to be detected directly by Planck . ... 2 The properties of galaxy--galaxy lensing . ...

. This plot shows the locations of 150 blazars (green dots) used in the EBL study. The background map shows the entire sky and was constructed from four years of gamma-rays with energies above 10 billion electron volts (GeV) detected by Fermi. The plane of our Milky Way Galaxy runs along the middle of the plot. The Fermi LAT instrument is the first to detect more than 500 sources in this energy range. // Credit: NASA/DOE/Fermi LAT Collaboration

... Meade Instruments Corporation . ... How to Calculate Power . How to Calculate Power: The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed. ... Example: The Meade DS-2070AT telescope has an objective lens focal length of 700mm; when this telescope is used with a 25mm eyepiece, a power of 700/25 = 28 power (written as "28x") results. ... about meade | ...

... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...

... HOME . ... Richard J. Edgar, Project Scientist . DXS, the Diffuse X-ray Spectrometer instruments were flown on the STS-54 mission of the Space Shuttle Endeavour in January of 1993. ... A Summary of the First Results from the Diffuse X-ray Spectrometer Experiment . ... In January of 1993 the Diffuse X-ray Spectrometer (DXS) instruments flew on the STS-54 mission of the Space Shuttle Endeavour. ... The DXS x-ray spectrum from the diffuse background in the constellations of Puppis and Auriga. ...

... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. Efficient data mining in the X-ray sky background John Cunniffe, Evert J.A. Meurs Dunsink Observatory, Castleknock, Dublin 15, Ireland Aaron Golden IT Centre, NUI Galway, University Road, Galway, Ireland Abstract. Abstract: The calculation of flux upper limits in the sourcefree ("background") regions of photon-limited images is complicated by instrumental and statistical modeling and requires non-trivial computational effort. ... 2004). ...

The VLTI Calibrator Selector Tool is a tool intended to assist in the selection of suitable interferometric calibrators for VLTI observations with MIDI and AMBER. It uses a model of the VLTI and its instruments to assess the fringe visibility, given the observed bandpass, the geometry, spectrum, and coordinates of the target and the time at which the observations are to be made. ... The tool offers an HTML/Java based interface and consists of two pages. ... The quality flag depends on LDD_chi2. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

Magnetic field measurements onboard the Interball Tail spacecraft are carried out by the FM-3I instrument which consists of two flux-gate magnetometers covering two different ranges: [-200, +200] nT and [-1000, +1000] nT. Besides scientific goals, the FM-3I experiment data is used to perform the attitude control of the Interball Tail spacecraft. ... August 22, 1995 . ... October 18, 1995 . Top of the page . ... Back to the Interball Home Page . ...

... The package stsdas.graphics needs to be loaded (to run imdisp_pos for getting # the NDC's of the display image) # set imtype="fits" # print " " print " *** Start of impol SPECIAL instrument demo *** " print " [stecf.impol and stsdas.graphics need to be loaded] " print " " # # (First delete any model reflection nebulae left over from previous demos) # print " Deleting any old demo files " imdel reflneb1*.fits verify=yes # # An input (intensity) image is required. ...

Inflating the Universe . ... Credit Copyright: WMAP Science Team , NASA Explanation: The Universe is expanding gradually now. But its initial expansion was almost impossibly rapid as it likely grew from quantum scale fluctuations in a trillionth of a second . ... WMAP's instruments detect the cosmic microwave background radiation - the afterglow light from the early Universe. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...

Next: The Focal Plane Instruments Up: No Title Previous: The X-ray Optics . CXO has two focal plane instruments - the High-Resolution Camera (HRC) and the Advanced CCD Imaging Spectrometer (ACIS). Each of these instruments, in turn, has two detectors, one optimized for direct imaging of x rays that pass through the optics and the other optimized for imaging x rays that are dispersed by the objective transmission gratings when the latter are commanded into place directly behind the HRMA. ...

A new Advanced Instruments and Engineering Facility will be established on Mt Stromlo, establishing new capability for precision optics manufacture and an expanded research and development program. ... ANU has signed an agreement with commercial aerospace partner Auspace to rebuild the Near-infrared Integral-Field Spectrograph, (NIFS) for the Gemini Observatory in Hawaii. ... This first Australian instrument for the Gemini telescopes is of enormous importance to Australian science and Stromlo staff. ...

THE IMAGE RECONSTRUCTION MODELLING IN THE SPACE EXPERIMENT WITH WIDE-FIELD GAMMA-RAY TELESCOPE WITH THE USE OF INTEGRAL SKY MAPS. , Russian Academy of Science, Profsoyznaya st. 84/32, Moscow 117810, Russia, E-mail: grif@dec1.npi.msu.su ABSTRACT The INTEGRAL sky maps were used for the simulations of the image reconstruction in the space experiment with a wide field (~2 sr) coding mask telescope elaborated for the all-sky monitoring in gamma-rays (0.05-1.0 MeV) ... Fig. ...

... Instrument page . ... Tirgo Page . ... Lunar occultations . ... A lunar occultation of the infrared source IRAS18124-2056 was recorded in the evening of July 25, 1999 at the 3.5m Telescopio Nazionale Galileo on the Canary Islands, equipped with the Arcetri Observatory near-infrared camera ARNICA . The occultation has been recorded by F. Ghinassi , and the data have been analyzed by A. Richichi . ... Here, we announce the first measurement of this kind at the TNG, and hopefully more will follow. ...