The large magnetic cloud caused by coronal mass ejection at the Sun on January 6, 1997 came to the Earth at early morning on January 10 and continue to interact with Earth's magnetosphere till January 11 (see for example home page of this event prepeared by Dr. M.Peredo http://www-istp.gsfc.nasa.gov/istp/cloud_jan97/event.html ). ... During the days discussed here INTERBALL-1 satellite was in the magnetosphere (MS) near its dusk flunk - see the Fig. 1 for compearing. ...

STIS Instrument Handbook for Cycle 24 . ... Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 24 > Chapter 6: Exposure Time Calculations > 6.4 Computing Exposure Times . ... Computing Exposure Times . 6.4.1 Calculating Exposure Times for a Given Signal-to-Noise . ... Expected count rate from your source over some area ( C ); . ... In the optical, each photon generates a single electron (i.e., counts в the gain correspond to the total number of electrons). ...

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 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. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Coronado€о Solar . ... Spotting Scopes . ...

... The UVCS instrument is capable of measuring velocity, electron density, and temperature of the coronal plasma while the Cassini radio frequency data can measure the change in electron density and magnetic field. ... This is an exciting opportunity for coronal physics research. ... Part of the observing run. Queue Observing X No Maybe Yes Instrument Setup S-band receiver S-low Atmospheric Observation Instruments: Sp ecial Equipment or setup: none RFI Considerations 1 Frequency Ranges Planned 2 ...

... read parameters; ################# start format upgrade section. if (filemode eq 'modify') { # convert old-style source list if necessary: if (! instrument_supplied) { if (hasAttribute( set , 'INSTRUME')) { instrument = stringAttribute(oldListSet, 'INSTRUME'); } else { # attempt to get it from file name: if (! instrument_in_filename) { call error;} } } call CAL_setState(instrument=instrumentId); rename table to 'SRCLIST'; get ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Upflows at the edges of active regions - called AR outflows , are studied using multi-instrument observations. ... The evolution of the photospheric magnetic field associated with the footpoints of the upflow region and the plasma properties of active region upflows are investigated aiming at providing such information for benchmarking data-driven modelling of this solar feature that is presented in Galsgaard et al. ...

... 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. ...

... V.N. Obridko . ... Local fields . ... Large Scale Magnetic Fields . Solar cycle . ... Solar Corona . Solar magnetic fields . ... webmaster@izmiran.ru . Solar magnetic fields and the Interpalanetary Matter Parameters . ... On calculating the solar wind parameters from the solar magnetic field data . ... Calculating solar wind parameters from solar magnetic field data. ... Proc. 11th European Solar Physics Meeting - "The Dynamic Sun: Challenges for Theory and Observations", 11-16 Sept. ...

SETUP : For service mode observations within the SOLARNET Access Program, ROSA and IBIS can be utilized either as stand alone instruments, or combined together. ... PROPOSAL STRUCTURE: Proposals should include up to max 2 pages, including a scientific rationale and technical requests (detailing i.e. spectral filters and wavelength sampling). ... For the case of joint IBIS and ROSA observations, proposals should indicate which instrument is to be considered as the primary one. ... SOLARNET Access . ...

... Second, the observatory can control the configuration, test data analysis procedures, and provide calibration solutions with the help of instrument models. This paper presents the VLT object-oriented framework for the development of ETCs (Exposure Time Calculators) and data simulators. ... Instrument simulations are being developed for the purpose of predictive calibration, instrument configuration control, and evaluation of data analysis procedures. ...

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...

... 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. ...

... In order to compare the number of different evolutionary stages obtained and X-ray luminosity of the chosen X-ray sources with the observed galactic values we use the sum of C/O+O/C , where C and O are the calculated and observed values of a given binary type, respectively. If we make comparison for a number of different binary species (for example, we compare the number of CV, number of X-ray pulsars,   total X-ray luminosity of LMXB, etc.), we write this criterion in the form: . ...

... Instruments . ... last 10 years in ADS) . in SAO press releases . ... Back to SAO homepage . Last update: . ... moisav sao.ru . Laboratory of Spectroscopy and Photometry of . ... SCORPIO Multimode focal reducer. SCORPIO-2 Multimode focal reducer (the project) . ... Longs-slit spectroscopy . Multi-slit spectroscopy . ... MPFS Multi Pupil Fiber Spectrograph (integral field) . MOFS Multi Object Fiber Spectrograph . ...

... In most cases it will however be necessary to compute an appropriate airmass using the COMPUTE/AIRMASS . ... It is important to keep in mind that ``mean airmass'' and ``mean atmospheric extinction correction'' are different from the values at mid-exposure, especially for larger zenith distances. ... For reasonable combinations of exposure time and zenith distance, the weighted mean airmass supplied by COMPUTE/AIRMASS should be appropriate. ...

The potential of masers to act as probes of their environment has long been recognised, but to date has proven very difficult to realise. ... 2001, Sutton et al. 2001). Masers are variable on timescales of weeks to months and one of the major limitations in previous attempts at multi-transition analysis has been the uncertainties introduced by combining observations made over many years using a variety of instruments with differing spectral and spatial resolutions and polarisation properties. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... Last Update August 22, 2005 . Listed Since August 31, 2001 . ... Novosibirsk, ZZ 630049 . ... Web Site . ... Web . www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Mid-Infrared All Sky Cloud Camera . ... These documents are provided to give users the information needed regarding instrument design, performance and operation to plan and carry out observations. While every effort is made to keep information on this site current, instrument performance does vary continuously with time and environmental conditions. ... Comments and suggestions are always welcome! Return to the APO Home Page . April 3, 2000 - Jon Brinkmann (brinkmann/nmsu.edu) ...