The primary goal of the Cycle 4 calibration plan was to provide an instrument calibration for Cycle 4 GO and GTO science programs as well as monitor internal health, photometric and optical stability of the instrument. ... Table 8.3: Summary of Cycle 4 Calibration Plans . ... Flats . ... Earth Flats . ... The internal flat fields are intended as delta-flats, in order to monitor the stability for the main photometric filter set as well as provide data for the generation of high S/N flat fields. ...

... There are two ways to produce flat fields for use with IR data. The standard method is to take 'LAMP ON' and 'LAMP OFF' exposures of the calibration spot on the telescope dome. The 'LAMP ON' exposure contains light from both the calibration lamp, which should provide the even illumination needed for the flat field, together with potentially uneven illumination from the telescope and instrument environments. ... In MIDAS, you may directly use COMPUTE/IMAGE to perform the subtraction. ...

... The first step to improve the FORS calibration is therefore to obtain data to allow a computation of the illumination correction across the field. ... Another limitation on the calibration accuracy has been the brightness of the Landolt standards which have forced the use of extremely short exposures introducing small but non-negligible shutter-time errors and also resulting in a very small number of useful standards per frame. ...

... 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. ... MeadeтАЩs new LX70 Series offers high-quality German equatorially mounted telescopes with slow-motion controls and heavy-duty steel tripods. ... For crisp wide-field observing and imaging, few optical designs match the performance of a true triple-element apochromatic refractor. ... Meade Standard Field Tripod #07020. ...

Meeting of the MKSP Nearby Galaxies Working Group Cambridge 2009 March 25 09:30-12:00 Participants: P.Alexander, J.Anderson, R.Beck, C.Chyzy, A.Fletcher, J.GeisbЭsch, G.Heald, J.Riley, H.RЖttgering, A.Scaife 1. ... Simulations of Faraday DP is needed (see above). ... Joint observations with the Survey KSP The MKSP needs spectral information about nearby galaxies from the SKSP surveys to choose best cases for deep integrations, and to determine magnetic field strengths (taking into account CRE losses). ...

... VLBI Schedule . LBA Home Page . ... LBA Correlation . ... Observers Wiki . ... Main / . ... Attendance: Cormac Reynolds, Hayley Bignall (Curtin); Tasso Tzioumis, Chris Phillips, Phil Edwards, Giannis Gonidakis, John Reynolds (CASS Marsfield); Jamie Stevens (CASS Narrabri); Shinji Horiuchi (CASS Tidbinbilla); Brett Reid, Bev Bedson, Mac?? ... Consolidation of the LBA Archive to include all ATNF + Swinburne + Curtin correlated LBA data. ... Copy LBA data archive from Curtin to ATNF (Curtin, Chris) . ...

... This map is called the two-dimensional Contou-Carrere symbol. I will explain the first properties of this symbol. I will prove the reciprocity laws for this symbol on algebraic surfaces over finite fields. I will explain how all reciprocity laws which one needs to construct Parshin-Kato global two-dimensional class field theory can be obtained from reciprocity laws for two-dimensional Contou-Carrere symbol. Poncelet Laboratory web page . ...

ESAC Calibration management What does that mean ? ... 14 June 2006 Marcus G. F. Kirsch Marcus Kirsch , XMM-Newton European Space Astronomy Center Page 1 menu · X-ray calibration in the last century · Can we do better · Calibration management · Committee for X-ray calibration · Calibration mission scenario ESAC Marcus Kirsch , XMM-Newton European Space Astronomy Center Page 2 ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

Minutes of the INTAS meeting, Amsterdam, October 28 2000. ... After this, the different groups participating in the INTAS programme presented their interests and expertise within the light scattering context. ... Karine Chamaillard (Paris, not formally taking part in INTAS): light scattering of rough surface spherical particles, DDA method. ... The meeting then proceeded with a discussion on possible projects to be done within the coming 6 months to 1 year. ... Amsterdam, October 30, 2000 Rens Waters ...

... Previous: Generalized Linear Multi-Frequency Imaging in VLBI . ... At Astronomical Observatory of Valencia University (OAUV), CCD observations of asteroids and big planets satellites are obtained since 2001 with a big format camera and several telescopes. ... Software for comparison of single and overlapped CCD fields obtained at different epochs has been developed. ... After images measurement in CCD field, catalogue stars are identified and adjusted with images. ...

I-GALFA Survey Fields . ... Most I-GALFA fields are observed by ``nodding'' the telescope north and south along the meridian to trace out a zig-zag pattern on the sky as the Earth rotates. ... The I-GALFA fields fill the AO DEC range and overlap with each other by 20', with one field 3 degrees wide at the zenith and four others 9.3 degrees wide covering the rest of the survey. ... The LST range of each field is shown in blue. ... Field . ... The I-GALFA fields are shown in Galactic coordinates below. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Observation of 40 Eri B obtained with ISIS on MJD 57056.92. ... Searches for magnetic fields in white dwarfs have clarified both the frequency of occurrence and the global structure of the fields found down to field strengths of the order of 500 kG. ... In this paper we report the successful testing of a very sensitive method of longitudinal field detection in DA white dwarfs. ...

General Information . ... The conference is organized by the Sternberg Astronomical Institute (SAI) of Moscow University and the IAU Working group "Site-testing Instruments" . ... Use of site data in telescope operation and adaptive optics. ... Recent conferences on this subject (2007, 2008) demonstrated great interest of the community, hence the need for a new meeting. ... Unlike previous recent conferences, this meeting will cover all aspects of site monitoring for optical/IR astronomy. ...

The first field of each line starts at 0 (zero); the second is 1 (one) and so on. To define which field to sort on you give the position of the field at which to start the sort followed by the position at which to end the sort. The position at which to start the sort is given as the number of fields to skip to get to this position. ... tells sort to skip the first two fields. The position at which to stop the sort is given as the number of the field at the end of which the sort stops. ...

... ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'cxc - Version CIAO 2.2' / tool that created this output CHECKSUM = '78aM87YM77aM77YM' / HDU checksum updated 2003-01-07T20:23:55 DATASUM = ' ' DATE = '2003-01-07T20:23:25' / Date and time of file creation DATE-OBS= '2002-12-29T23:20:17' / Date and time of observation start DATE- END = '2002-12-30T10:13:33' / Date and time of observation stop TIMESYS = 'TT ' / ... DSVAL1 = 'TABLE ' / DM Keyword: Descriptor value. ...

NEUTRON MONITOR DATA FOR JUNGFRAUJOCH AND BERN DURING THE GROUND-LEVEL SOLAR COSMIC-RAY EVENT ON 28 October 2003 R. Buetikofer and E.O. Flueckiger Physikalisches Institut, Universitaet Bern Sidlerstrasse 5, CH-3012 Bern , Switzerland This report includes information on the processing and use of the data for the ground-level solar cosmic ray event on 28 October 2003 obtained by the following three ... Section 3 of the IGY neutron monitor at Jungfraujoch is the central section. ...

... Other Characteristics of the Sun: Variability of Rotation, Magnetism, Chemical Structure, Planetary System. ... Methods of Solar Magnetic Fields Measuring: Visual, Photografic, Photoelectric. ... Empiric Datas of Magnetic Fields in Photosphere, Chromosphere and Corona. ... Characteristics of Magnetic Field in Balanced Force Tubes by Potential and Forceless Field. ... Phenomenons in Active Region (Magnetic Field, Spots, Torches, Solar Prominences, Flares, Discharges. ... Magnetic Fields in Flares. ...

... The material in "From Stargazers to Starships" meets several important requirements of the national standards. Pages cited below are from National Science Education Standards National Academy Press, Washington 1995. ... For example: the sections on astronomy not only describe calendars and sundials (including their construction), but also the astronomy of the ancient Greeks, including two different ways in which ancient Greeks estimated the distance to the Moon. ...

Night of October 29, 2011 ========================= CDK20 Sloan filter set 100 second exposures DATE -OBS= ' 2011-10-30T02 :37:01' Field will not solve with astrometry.net Header listing for HDU #1: SIMPLE = T / file does conform to FITS standard BITPIX = -32 / 32 bit floating point data pixel NAXIS = 2 / number of data axes NAXIS1 = 4096 / length of data axis 1 NAXIS2 = 4096 / length of data axis 2 EXTEND = T / 376.. ...