RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...

Еще в разделе: (Показать все результаты (>1029) - hea.iki.rssi.ru/ )

... We will consider the rms, (K), for observations with a receiver of system temperature, T , frequency resolution, per polarization, and total integration time per observing cycle, . ... For ``in-band'' frequency switching, the line under investigation is always in the observing band. ... Position Switching or ``Out-of-Band'' Frequency Switching: Here the line is only observed for one half of the time, with noise being present all of the time. ...

Еще в разделе: (Показать все результаты (>6527) - www.naic.edu/ )

• ON/OFF (Position Switching)
• Current Arecibo Observing Modes
• CIMA Auto-Observing

Instrument Science Report FGS 2005-01 The FGS Astrometry in the Feb 2005 On-orbit Two Gyro Mode Test E. Nelan August 17, 2005 A BSTRACT FGS1r Astrometry was tested under the Two-Gyro Mode (TGM) pointing control law during the February 2005 on-orbit test. ... In each of these orbits the visit contained a single (long) exposure that observed the visit's particular target star for the remainder of the visibility period. ... Visit 02: Visit 02 employed a bright (V=9.9) dominant guide star. ...

Еще в разделе: (Показать все результаты (>23016) - www.stsci.edu/ )

• HST Primer for Cycle 22
• Phase I Target Naming Conventions
• Calibration of COS Observations of Extended Targets in Cycle 24

... 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. ...

Еще в разделе: (Показать все результаты (>9989) - www.arcetri.astro.it/ )

• The Discovery of the Galilean Satellites
• IBIS: SolarNet Access
• IBIS - Flat Fielding

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

Еще в разделе: (Показать все результаты (>1063) - www.apo.nmsu.edu/ )

• TUI:Telescope:Offset Types
• Astrophysical Research Consortium - Apache Point Observatory
• lsst.tcc: tcc.axis.ptCorrFromObs Namespace Reference

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

Еще в разделе: (Показать все результаты (>753) - www.mso.anu.edu.au/ )

Next: The Individual Approach Up: The Joint Approach Previous: Self-Calibration . We briefly describe some other useful tools. ... Mosaic Point-Spread Function - MOSPSF: It is occasionally instructive to look at the point-spread function at a particular position in a mosaic experiment. ... Additionally, as mentioned above, invert does not attempt to completely correct for the primary beam attenuation where there is too little data (i.e. some primary beam attenuation is in the output image). ...

Еще в разделе: (Показать все результаты (>34023) - www.atnf.csiro.au/ )

• Tidbinbilla
• Visibility Processing
• ATNF Observer's help - what's new/broken/of interest

... 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. ...

Еще в разделе: (Показать все результаты (>29363) - www.eso.org/ )

• ESO - Observing conditions: definitions
• Help for Night Report / Progress Pages
• PAM Bulletin

... the time of observation . ... Observing the Changing Position of the Sun To Establish Cardinal Directions . ... Observations of the Sun's apparent movement across the sky and its pattern of rising and setting in the east and west horizon helped to establish the cardinal directions. ... The final stage of the Sun's return was marked by the observation that the Sun had reached its highest altitude when the full width of your mitted hand could fill the gap between the Sun and the horizon. ...

Еще в разделе: (Показать все результаты (>1349) - www.astrosociety.org/ )

• ASP: Guest Observer
• ASP: Star Science in the Autumn Sky

... 295, 2003 H. E. Payne, R. I. Jedrzejewski, and R. N. Hook, eds. The MAST Pointings Tables Pro ject Karen Levay, Paolo Padovani1 , Randall Thompson, Megan Donahue, Michael Corbin Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 Abstract. We have undertaken a pro ject to create a database of all HST imaging observations organized by position on the sky. ... Each sky region was called a "pointing." ... Users select the instrument pointings table they wish to search. ...

Еще в разделе: (Показать все результаты (>1902) - www.adass.org/ )

• http://www.adass.org/adass/proceedings/adass03/reprints/P1-29.pdf
• ADASS 2003 Conference Proceedings
• ADASS 2002 Conference Proceedings

... Between them, the following points are touched: ICRF-2 structure, ICRF Core sources selection, and some expected user's requirements. ... Suggested total number of sources is close to the number of sources already observed in the IVS and VCS sessions, and for most of them reliable positions are derived, mostly for declination > -40 deg. ... So, results of source position time series analysis heavily depend on method used for time series computation and should be used with care. ...

Еще в разделе: (Показать все результаты (>357) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/english/as/j2014/presentations/vavilov.pdf
• Pulkovo NEO Page: Estimation of Accuracy of the Observations

... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...

Еще в разделе: (Показать все результаты (>945) - www.iki.rssi.ru/ )

• Trigonometry--what it is good for?
• Discovery of the Solar System
• Current Solar Wind Conditions

... Analysis of in-orbit data closely follow the CSL data analysis. Stars with known astrometric positions are matched with their image centroids. ... The measured position, the expected position and the offset between the measured and expected positions are calculated and written into a file. ... select catalogued positions for different observations/pointings (e.g. positions of objects in photometric sequence) . ... The new distortion map was generated from in-flight observations of the G153 field. ...

Еще в разделе: (Показать все результаты (>12810) - xmm.vilspa.esa.es/ )

• LARGESCALESENS
• How to extract PN spectra of a point-like source and associated matrices
• How to extract MOS spectra of a point-like source and associated matrices

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...

Еще в разделе: (Показать все результаты (>8416) - www.sai.msu.su/ )

• IAUC guidelines.
• APOD: 2012 April 30 - Aurora Over RaufarhЖfn
• APOD: March 31, 1996 - Comet Hyakutake Finder Chart for Early April

Next: Reducing the observations Up: PEPSYS general photometry Previous: Influencing the plan . ... If the telescope and instrumentation are unfamiliar to you, you may have trouble keeping to the schedule for the first night or two, so try to work with a previous observer on the equipment for a night or two of training before your observing run. If you fall behind, try to keep as many low-altitude observations of extinction stars as you can, and drop some circumzenithal ones if necessary. ...

Еще в разделе: (Показать все результаты (>2846) - www.sao.ru/ )

• MIT-GB catalog
• Order Definition
• Radio survey for new compact HII regions

... Comet Ikeya-Zhang, designated C/2002 C1 (Ikeya-Zhang), is named after Kaoru Ikeya of Shizuoka prefecture, Japan, and Daqing Zhang of Henan province, China, who independently discovered it on the night of 1 February 2002. A preliminary orbit reported the following day indicated that it would come moderately close to both the Earth and the Sun and that it might become visible to the naked eye during late March and April 2002. ... Bailey, M.E., Clube, S.V.M. and Napier, W.M. The Origin of Comets . ...

Еще в разделе: (Показать все результаты (>3695) - star.arm.ac.uk/ )

• Faulkes Telescope
• Terry Mosely's Bulletins
• Observations with the Faulkes Telescope North

... We have developed a suite of analysis tools and an on-line database for both the primary ChaMPlane X-ray data (source catalogs) as well as the optical counterpart data. ... The ChaMPlane VO provides access to our deep Mosaic optical (V,R,I,Halpha) images, catalogs of their optical photometry, Chandra images with exposure-map correction, X-ray source data and details of X-ray sources with identified optical counterparts. ... Chandra sources are displayed (right) in a smoothed Chandra X-ray . ...

Еще в разделе: (Показать все результаты (>4412) - hea-www.harvard.edu/ )

• Select a circle around the central point source
• Getting Common Information About Access Points
• Chandra Images for G162.7-16.0

... Sighting the telescope, first at the tree and then at pole B, you measure the angle A of the triangle ABC, equal to the difference between the numbers you have read from the azimuth plate.. ... Why triangles? ... One large surveying project of the 1800s was the " Great Trigonometric Survey " of British India. ... Everest was the one who commisioned and first used those giant theodolites; they are now on display in the Museum of the Survey of India in Dehra Dum. ... Everest . ...

Еще в разделе: (Показать все результаты (>1382) - www.cosmos.ru/ )

• Lagrangian Points
• Two points (INTERBALL-1 and MAGION-4) observations of magnetopause motion
• Multipoint correlations of the solar wind parameters observed by several

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

Еще в разделе: (Показать все результаты (>3) - aberrator.astronomy.net/ )

The preliminary version of documentation of the format for the interchange of calibrated optical/IR data being developed by Tom Pauls of NRL and John Young of COAST was presented and a number of issues discussed. The proposed format is in the general form of a relational database with different components stored in FITS binary tables. ... Should there be a single data table type that includes all data types, or multiple table types, one per data type? What data types are needed? ...

Еще в разделе: (Показать все результаты (>2841) - www.mrao.cam.ac.uk/ )

• A CLEAN-based method for mosaic deconvolution
• Radio observations of the Marano Field
• Sub-mm and radio observations of water maser sources