... Some of these (e.g., 1 through 6) test specific components of the instruments while others characterize its performance within the HST environment (e.g., 7, 8, 17, and 22). Activities 12 and 13 align the NICMOS fore-optics; activities 9, 10, 11, and 21 enable the use of the coronograph in Camera 2; activities 15 and 20 characterize the detectors; and activities 18 and 19 establish the initial photometric calibration. ... Characterize the effect of severe overexposure of the NICMOS detectors. ...

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• Dark Backgrounds
• HST Cycle 11 Late Breaking News

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

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Next: ZODIACAL Up: DIFFUSEGALA Previous: Generation from Ground Calibration Contents . It is not expected to update these CCF files on the short term, neither is there a dedicated calibration activity. However on the longterm it will be possible to estimate the diffuse background components (DGL and Zodiacal light). ... The two background components can be disentangled in this 5-dimensional data-space. Michael Smith 2011-09-20 ...

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• XMM-Newton SAS: SAS New Installation
• XMM-Newton Further EPIC Background Scripts
• Future developments

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

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• Multiwave Continuum Data Reduction at RATAN-600
• The Ground Support Facilities for the BeppoSAX Mission
• A Spectroscopy Exposure Time Calculator for IRAF

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

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• Extended time series of Solar Activity Indices

... Flux density at 1 GHz (/Jy): 19 . ... Notes: This is the remnant of the SN of AD 1006. ... Optical: Filaments to the NW, with broad H component. ... Point sources: The background Schweizer Middleditch star is near the middle of the remnant. ... van den Bergh 1976, ApJ, 208, L17. Optical observations. ADS . ... X-ray spectroscopy. ... Schweizer & Middleditch 1980, ApJ, 241, 1039. ... Optical spectroscopy of the Schweizer Middleditch star. ... Optical spectroscopy. ... 2013, A&A, 552, A9. ...

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• Bojan Nikolic -- 90 GHz Continuum Observations of Messier 66
• G263.9-3.3
• Abstract

... In order to realize the optimal scientific return from the VLT, ESO has undertaken to develop an end-to-end data flow system from proposal entry to science archive. The VLT Data Flow System (DFS) is being designed and implemented by the DFS Group (ESO Internal access only) in collaboration with VLT Division and Instrumentation Division . ... VLT Control System Interface . ... OBs are the quantum of data that flows within the DFS, collecting state, data and status information as they flow. ...

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• DFOS tools: documentation and installation
• DFS Group Home Page
• Operations with DFOS: daily workflow, the simple model

... 88, Jan. 1983, p. 1-15. l. A survey of extragalactic radio sources made using driven declination scans is reported covering an area of about 0.07 sr to a limiting flux density of 35 mJy. The fast-scan survey was carried out at a galactic latitude greater than 17 deg with the NRAO 91-m telescope operating at 4.755 GHz, and the 480 sources detected were reobserved at 1.4 GHz with the National Astronomy and Ionosphere Center 305-m telescope at Arecibo. ...

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• Sky background definition
• H I 21 cm observations and data reduction
• Diffuse Model

Peremennye Zvezdy", . ... Star Name: . GSC 3710-00312, USNO-A2.0 1425-04252279 . ... Variability type: . ... USNO-A2.0 1425-04252279 is located at the distance of 15?.7 from the X-ray source 1RXS J031707.9+572942, which is larger than the position error of the source (12?), but its hardness ratio HR1 = 0.03 0.29, typical of chromospherically active stars, and its character of variability allow us to assume that the star is related to the X-ray source. ... Eclipsing variability . Sine wave 1 . ...

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• Астронет > Англо-Русский Словарь

... 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"). ...

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• Ratan-600 observation schedule
• CH Cyg
• Solar system sector, archive 1994

NSF Division of Astronomical Sciences Senior Review NAIC Senior Review Memo Series Memo #1: Background and NSF/AST Request to NAIC Robert L. Brown April 11, 2005 1. Background Over the course of the past six months the astronomical community has been informed by the NSF Division of Astronomical Sciences (AST) about its planning for a "Senior Review". ... As one of the AST facilities, the astronomy program at NAIC is directly affected by the Senior Review. ... Sincerely, G. W. Van Citters DD/AST ...

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• Spectral-Line Observing
• arecibo technical and operations memo series (atoms)
• Arecibo Planetary Radar

... Minute Values of Geomagnetic Field Components . ... AA 1868 - Present (3 hourly and daily) (monthly) (yearly) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) KP_AP 1932 - Present (3 hourly and daily) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) AE_HV 1957-75, 78-88 (hourly) AE_MIN 1978-881-6;198903;1990-94 (minute) DST 1957 - Present (hourly) PC 1975 - Present (15-minute) AMANAS 1959 - Present (3 hourly and daily) KMKNKS 1983 - Present (3 hourly) . ...

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