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. ...

FGS Instrument Handbook for Cycle 24 . ... Fine Guidance Sensor Instrument Handbook for Cycle 24 > Chapter 4: Observing with the FGS > 4.3 Position Mode Observing Strategies . ... 4.3.2 Drift and Exposure Sequencing . 4.3.3 Cross Filter Observations . 4.3.4 Moving Target Observation Strategy . ... In Position mode, the FGS can track a bright target (V ) whose motion is less than ~ 0.1 arcsec per second. ... Transfer mode observations of moving targets are discussed in the next section. ...

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > The response curve leaves residual instrument features in my science. ... Observing Facilities . ... Observing with ESO Telescopes . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ... To can be avoided by flat-fielding the flux standard star spectrum with the same flat field as is used for the science data. ...

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Sequence of four video frames captured at 01:05 BST at Armagh Observatory on the night of the 24/25th July 2013, showing the onset, development and demise of the sprite. ... Unlike common lightning discharges, which often jump between clouds or between the clouds and the ground, sprites are associated with similarly powerful electrical fields that occur high above the clouds of the EarthтАЩs atmosphere. ...

... The Sun of our solar system is a typical star of intermediate size and luminosity. ... The Sun has a very complex surface magnetic field created by convective flow of the electrically conducting solar material. ... The escaping hot coronal plasma is called the solar wind . ... See the table below for the observed features above the Sun's surface. ... Chromospheric features . Coronal features . ... dense clouds of material suspended above the surface of the Sun by magnetic field line loops . ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Moon . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Tycho's instruments . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... A2153 Date Received: 2005 -Oct-03 07:22:54 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 39 Hours Faint HI 21-cm Emission Line Wings at Forbidden Velocities Large-scale (l,v) diagrams of HI 21-cm line emission in the Galactic plane show small high-velocity bumps protruding from their surroundings. ... They are all the FVWs that is available at Arecibo but not observed yet. ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope 's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication SSRT - Siberian Solar Radio Telescope . ...

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): . ...

View Edit Attributes History Attach Print Search . ... Observing . ... PPTA timeline . ... Editing this wiki . ... RFI . This page is dedicated to identifying the types of RFI that you may encounter whilst observing for P456. ... To upload an image, click 'Edit' at top right, log on, and click 'Attach'. ... Then add a title, description, and the 'Attach' definition and save the page. ... View Edit Attributes History Attach Print Search - Page last modified on February 19, 2014, at 10:59 PM . ...

Ground-Based Mid Infra-Red Observations of Nearby Starburst and AGN Galaxies Bo jan Nikolic , Paul Alexander, Garret Cotter and Malcolm Longair Astrophysics Group, Cavendish Lab, Cambridge, U.K. Marcel Clemens Universita degli Studi di Padova, Italy Abstract. We present preliminary results of recent spatially resolved mid infrared (Mid-IR) spectroscopy with the MICHELLE instrument on UKIRT of NGC 7469, observed as part of a larger programme to study a sample of starburst and AGN in the Mid-IR. ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... Comet Hyakutake wowed us this spring [see Guest Observer, May/June, p. 11]. ... The best time to observe a meteor shower is after midnight, as your nighttime location moves head-on into the path of the cometary debris. ... As observers, we are interested in the number of Perseids per time interval. ... Tabulate the number of meteors observed per interval, and make sure to label the table with the local time and date of each interval. ...

... The first task assumes the searching for chemical composition and sizes of particles which give the wavelength dependence of the extinction efficiencies close to the observed dependence of . Figure 7: Wavelength dependence of the extinction efficiency factors for homogeneous spherical particles of different sizes consisting of astronomical silicate and amorphous carbon. The dashed segment shows the approximate wavelength dependence of the mean galactic extinction curve at optical wavelengths. ...

... Contacts . 2012: . ... We refined the fundamental parameters of the components, the orbital periods, and the conditions of photospheric heating of the secondary component by the ultraviolet radiation of the hot component. ... The observations of the star clusters associated with ultra-luminous x-ray sources (ULXs) in four galaxies on the 6-meter and VLT telescopes have shown that all the ULXs are located within 200pc of very young star clusters (younger than 5 million years). ... Archive . ...

... A concrete application is displayed step by step by the command: TUTORIAL/CLOUD . The data used for this example are CaII absorption features observed in the spectrum of SN 1986g in NGC 5128 (observer: S. d'Odorico, instrument: CASPEC). ... Sampling is 0.05? per pixel and the measured instrumental resolution, 17km/s. The final cloud model consists of 12 absorption doublets. The corresponding image includes both components K and H and has been convolved by a gaussian PSF of 0.22? (17km/s) FWHM. ...

Timing Mo de low-energy background (OCR-1762) Michael Freyb erg, Vadim Burwitz, MPE Motivation (status June 2006 ): · for analysis of serendipitous science (not only!) or faint sp ectral features there should b e detailled knowledge on camera ... MF + VB MPE Garching XMM-Newton EPIC Calibration Meeting, Mallorca, 26 Oct 2006 5 TI mo de: 0503 0125910901 PNS014 Sp ectrum and two-comp onent low-energy fit for 0503 0125910901 PNS014. ...