... 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: . ...

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• Space Telescope Imaging Spectrograph Instrument Handbook
• ACS Instrument Handbook
• STIS Instrument Handbook

... INTEGRAL Science Data Centre, Chemin d'?cogia 16, CH-1290 Versoix, Switzerland . ... The INTEGRAL Science Data Centre, implemented by a consortium of scientific institutions, is the part of the ground segment which deals with the interface between the scientific community and the INTEGRAL data. ... This has led to the concept of the INTEGRAL Science Data Centre (ISDC). This centre is the interface between the INTEGRAL data and the users' community. ... 200 housekeeping records per instrument . ...

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• Kalman Filtering in Chandra Aspect Determination
• ADASS 2003 Conference Proceedings
• ADASS 2002 Conference Proceedings

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Development of Organizational Structure . Company's History . ... History . Brief History of Rocket and Space Technology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . ... ISS 45/46 . ... Rocket Space Complexes . ... The experiment further develops a sequence of visual observations of the Earth surface started earlier at the Mir station. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

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• INTERNATIONAL SPACE STATION

K-band Arcetri Obscured Supernova Search . What is the KAOSS Project? W hat is the KAOSS Project? Some recent surveys aimed at detecting Supernovae (SNe) in the optical have found that starburst galaxies do not show evidence for an enhanced SN rate, with respect to quiescent galaxies (Richmond et al. ... A similar result was obtained by Navasardyan et al. (2001) who looked for SNe in interacting galaxies, finding no evidence for correlations between SN rate and galaxy properties. ...

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• Performances of NICS
• IBIS: SolarNet Access
• APOD: December 30, 1998 - Supernova 1994D and the Unexpected Universe

BOC 2012 Agenda Tuesday 6th March Background Working Group Introduction and action items Updates to the EPIC blank sky and SWCX projects Current status of the blank field templates for the PN timing mode Status of background group activities at the SOC Expected ESAS upgrades in SAS MOS CCD noise and other BG issues Discussions/Summing up/AOB/Plans Operations and Instrumentation Welcome XMM Newton mission operations Status of instrument ...

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• Selection of observations of empty RGS files
• Proposal change classes
• XMM Deep Survey Simulations

... An Unexpected Flare from the Crab Nebula . ... Credit Copyright: NASA , DOE , Fermi LAT , R. Buehler ( SLAC , KIPAC ) Explanation: Why does the Crab Nebula flare? ... As recently as one month ago, gamma-ray observations of the Crab Nebula by the Fermi Gamma Ray Space Telescope showed an unexpected increase in gamma-ray brightness, becoming about five times the nebula's usual gamma-ray brightness, and fading again in only a few days. ... Publications with keywords: Crab Nebula - gamma ray . ...

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• Астронет > An Unexpected Flare from the Crab Nebula
• Fermi's First Light
• Gamma-Ray Burst: A Milestone Explosion

Next: CONICA: The high resolution Up: VLT Status and Instruments Previous: VLT First Light . ... Infrared instruments for the VLT . Instrument Summary . ... The already approved infrared instruments for the VLT are: . ... CONICA: Coude Near Infrared Camera (P.I. R. Lenzen, MPIA, Heidelberg) - an historical name as this instrument will be used for diffraction limited 1-5 m imaging, polarimetry and spectroscopy with the NAOS, Nasmyth Adaptive Optics System on UT1 (P.I. G. Rousset, ONERA ). ...

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• NICMOS and the VLT: A New Era of High Resolution Near Infrared Imaging and
• A Color Analysis of NICMOS Parallel Observations
• No Title

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. ...

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• http://www.naic.edu/vscience/schedule/tpfiles/SheckardtagP2278tp.pdf
• http://www.naic.edu/vscience/schedule/2014Spring/SaltertagA2766.pdf
• http://www.naic.edu/vscience/schedule/2015Spring/WolszczantagA2944.pdf

... 227Wink This paper containes an investigation of 91 sources which appear to be point sources when observed with the angular resolution of the 100-m telescope at 4.9 GHz, teta_a = 2.6', and which we expected to be HII regions. The basic search list was prepared from the 4.9 GHz survey of the galactic plane by Altenhoff et al. ... In the present paper we list 4.9 GHz flux densities only for sources for sources for which we present new observations. ... source structure indicated . ...

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• A VLA Survey of the First Quadrant of the Galactic Plane at 1.5
• Group IAG

... CYGAM FLIGHT IN THE HIGH APOGEE ORBIT? Distribution of the Galaxy diffuse emission with high angular resolution allowing to refine the spatial distribution of the cosmic-ray protons in the Galaxy. More than 1000 compact sources with the fraction of degree location accuracy and continuouse monitoring of their flux time variation. Up to 10 new gamma-ray pulsars emitting in the very high energy range. Several high energy gamma-ray bursts with the fraction of degree localization accuracy. ...

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• Main results of the experimental and theoretical research completed in 2010
• Optico-electronic Instruments for the Phobos-Grunt Mission
• IKI - Space Research Institute of Russian Academy of Sciences

... 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. ...

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... 2011 May 23 . An Unexpected Flare from the Crab Nebula . ... As recently as one month ago, gamma-ray observations of the Crab Nebula by the Fermi Gamma Ray Space Telescope showed an unexpected increase in gamma-ray brightness, becoming about five times the nebula's usual gamma-ray brightness, and fading again in only a few days. ... The above image shows how the Crab Nebula normally appears in gamma rays, as compared to the Geminga pulsar, and how it then appeared during the recent brightening. ...

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• APOD: 2008 October 20 - Moons, Rings, and Unexpected Colors on Saturn
• APOD: 2013 November 12 - The Unexpected Tails of Asteroid P5
• APOD: 2015 May 31 - Supernova 1994D and the Unexpected Universe

... The probability to see blazars with INTEGRAL instruments will increase with time as better limits will be achieved and the chance to have an observation during flaring episode will also correspondingly increase. Key words: INTEGRAL satellite, blazars. ... IBIS total exposure times for blazars, CP data, revolutions 1­250. ... Within the INTEGRAL observation, the S5 0716+714 was detected only by IBIS ISGRI at 4.5 sigma, in 30­ 60 keV band, for a count rate of 0.11 counts s-1 (exposure 280 ksec). ...

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• Second Spectrum-RG/eROSITA Conference
• GRANAT Home Page
• The 6th INTEGRAL Workshop "The Obscured Universe"

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > I see unexpected boxy emission-like features in my REDL spectra - where do they come from? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... The pipeline by default interpolates across the bad columns in the REDL CCD when it creates the master bias, but does not so when it processes the science data. This inconsistency can create boxy emission-like features as seen in the figure below. ...

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• ArtistтАЩs impression of the expected dark matter distribution around the Milky
• An Unexpected Streak in a MASCOT image | ESO
• ESO - 8th VLTI Summer School: High angular resolution in astrophysics: optical

Lab . Main page News People . ASA . Master . Master net Homepage . ... Lomonosov Moscow State University Sternberg Astronomical Institute . ... MASTER . ... Lomonosov (ShOK) . ... About Space Monitoring Laboratory, scientific directions, instruments, contacts . People, who work in lab . Latest news and news archive . ... Gamma-Ray Bursts observations . Theory of Gamma-Ray Burst formation . ... MASTER (Global Robotic optical monitoring system) . ... All news ...

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... INSTRUMENT: SurveyCam FILTERS: Stromgren uvby, 2" square COMMENTS: remote observations are expected BRIEF SCIENCE JUSTIFICATION: Last decade numerous faint structures at the periphery of regular galaxies, as arcs, tails, or streams, have been discovered (see e.g. Martinez-Delgado et al., ... The broad-band photometry is used for observing the faint structures, but it does not allow to break the age-metallicity degeneracy efficiently. ... The standard Stromgren set is available at APO. ... 2014). ...

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• http://www.apo.nmsu.edu/Telescopes/ARCSAT/ObsSchedules/arcsat_feb2015/AS01.html
• http://www.apo.nmsu.edu/Telescopes/ARCSAT/ObsSchedules/arcsat_may2014/AS01.html
• SDSS Instruments

Next: Conclusion Up: No Title Previous: The Transmission Gratings . ... The potential of Chandra is illustrated in Figure which shows the official "first-light" image. ... Figure: The official CXO first light image - the supernova remnant CasA. Perhaps the neutron star - black hole connection and the utility of CXO are best illustrated by an early observation of the Crab Nebula and pulsar taken as part of the HETG calibration. ... Figure shows the zeroth-order image of the Crab Nebula. ...

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• AXAF-Chandra
• Scientific Interests
• Extragalactic Gravitational Wave Background

... PROBLEMS: "Unknown" (i.e. no physics model) components; What's a "Good-Enough-Fit" (e.g. Poisson)? ... ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR ...

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• Source Selection
• Harvard College Observatory History in Images
• HEAD 2010: Chandra's Ultimate Angular Resolution

Next: Recording Systems Control Up: Recording Systems. ... SCHED was originally written in about 1979 as the scheduling program for global VLBI observations using the Mark II recording system. That was a system capable of recording 4 Mbps on video tape recorders. ... The wide band recording system in use for VLBI for many years was the Mark III system. ... However, SCHED was capable of scheduling Mark III observations on systems that used the VLBA control files (VLBA, VLA, and Green Bank). ...

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In calculating the NIFS sensitivity, we adopt a read noise of 5 e - , a dark current of 0.01 e - s -1 pix -1 , and a maximum exposure time of 3600 s. Grating . ... e/pix) . ... OH Cont. (e/pix) . ... NIFS should achieve signal-to-noise ratios of ~ 10 per spectral pixel in a 0.1" 0.1" aperture for single 1800 s exposures on uniform, extended, continuum sources with surface brightnesses of J = 15.4, J = 15.0, H = 14.8, and K = 13.5 mag arcsec -2 using the Z , J , H , and K gratings, respectively. ...

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• Untitled Document
• Gemini Near-Infrared Integral-Field Spectrograph (NIFS) IFU.
• GSAOI Instrument Description Page