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http://lnfm1.sai.msu.ru/neb/nss/coorb/coorb_anno.doc.

1. Procedures for Observations
... 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. ...
[ Сохраненная копия ]  Ссылки http://www.arcetri.astro.it/irlab/instr/longsp/doc/proc_ob.html -- 7.9 Кб -- 16.02.2000
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2. The GB/NAIC 5GHz Survey
... 67Lawrence+ Of the 3118 sources in the Arecibo 611 MHz survey, 2911 have been observed using the NRAO 300 ft transit telescope at 6 cm. ... 4 Mean 1950 RA (see col.3.) ... 6 Mean 1950 Decl. (see col.3.). if A appears in col.1, the Arecibo dec. is listed. 7 Dec error in arc seconds (see col.3.) ... 16 Number of observations, in the form abc, where a is the number of observations averaged in RA, b is the number of observations averaged Dec, c is the number of observations averaged in flux. ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/cats/doc/NAIC_5GHz.html -- 4.2 Кб -- 18.03.2015
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3. http://www.stsci.edu/hst/HST_overview/TwoGyroMode/2GyroFAQs/documents/FGS.pdf
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. ...
[ Текст ]  Ссылки http://www.stsci.edu/hst/HST_overview/TwoGyroMode/2GyroFAQs/documents/FGS.pdf -- 250.0 Кб -- 05.10.2005
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4. ON/OFF (Position Switching)
... The procedure simply observes ON your source for x minutes and then takes a `blank sky' observation OFF your source for the same amount of time and tracking the same azimuth and zenith angle range. ... Typically, observing times are kept to within 5 minutes (with 5 minutes as the most efficient, and therefore default, choice). ... If your scans are for 5 minutes or less, your wait time should be set to 1 minute (the default setting). ... A 5 minute ON/OFF + 10s CAL takes 11.3 minutes. ...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/~astro/spectral_line/handbook_old/node9.html -- 6.0 Кб -- 31.05.2001
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5. XMM-Newton Satellite Position
... News Latest News News Archive Newsletter Quarterly Status Report . ... Data Analysis SAS News What is SAS? ... Archive, Pipeline & Catalogues XMM-Newton Science Archive Pipeline Processing System Observation Data Status Time Correlation Fix Serendipitous Source Catalogue OM Serendipitous Source Catalogue Slew Survey Catalogue Latest Slew Results Browsing Interface for RGS Data Live Radiation Monitor Plots Radiation Monitor Files . ... Please refresh your browser to update the satellite position. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/external/xmm_science/sat_pos/ -- 12.9 Кб -- 09.04.2016
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6. (Untitled)
When entering Identification section user should open the file with observed positions of objects which are to be identified (the file may be first created). ... Format of observations must coincide with that of optic observations in which they are published by Minor Planet Center (observed position may be presented as “accurate” or “approximate” one): . ... observed right ascension (in hours, minutes, and seconds of time (“accurate position”) or in hours and minutes (“approximate position”) . ...
[ Сохраненная копия ]  Ссылки http://www.ipa.nw.ru/PAGE/FUNDAMENTAL/LSBSS/winample_guide/user712s.htm -- 3.4 Кб -- 10.04.2016
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7. Pulkovo NEO Page: Estimation of Accuracy of the Observations
Pulkovo NEO Page . ... NEA Accuracy Estimation . ... The estimation of accuracy of the current CCD observations of asteroids and comets is constantly performed at Pulkovo Observatory. ... The (O-C) values, so called "Observed" minus "Calculated" positions, characterize numerically the observations of any observatory, both professional and amateur, during a short period (one or several close nights). ... So the (O-C) values for these objects nearly entirely define the errors of observations. ...
[ Сохраненная копия ]  Ссылки http://www.gao.spb.ru/personal/neo/eng/accuracy/p01.htm -- 9.8 Кб -- 26.11.2013
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8. FORS1 Photometric System Characterization
These observations are aimed at fully charactering FORS1 photometric system (UBVRI zero-points, color-terms and extinction coefficients) for the Tektronix 2048x2048 pixel CCD (24µm px) . To this aim, the two Landolt/Stetson photometric fields SA95 and SA101 will be observed on a number of epochs and at different airmasses during February and March 2007. ... SA101 . ... OBs for SA101 have to be observed during evenigh twilight (exceptions are expected for the second half of March) . ...
[ Сохраненная копия ]  Ссылки http://www.eso.org/~fpatat/fors/testphot2/ -- 10.8 Кб -- 12.03.2007
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9. VSOP Observing Schedule
... VS experiment codes are VSOP Survey Observations VT Test/Calibration Observations --------------------------------------------------------------------- EXPNO SOURCE FRQ Corr DOY DY: DATE UT RANGE #TEL TELESCOPES V028a2 J1733-13 L Socr 156 Su:Jun-04 06:00 - 13:00 11 VLBA TI W030e2 J1733-13 C Socr 157 Mo:Jun-05 04:00 - 13:00 11 VLBA CD W031b VS01m W030e3 J1733-13 C Pent 157 Mo:Jun-05 13:00 - 20:00 4 HH CD UD KA W031B W030f1 J1911-20 C ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/pub/people/vlbi/vsop/www/short_000604.html -- 6.8 Кб -- 27.12.2007
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10. Accuracy of World positional CCD observations of the numbered minor planets
... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...
[ Сохраненная копия ]  Ссылки http://www.accuracy.puldb.ru/ADVISES.HTM -- 2.8 Кб -- 05.12.2007
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11. Observations with the Faulkes Telescope North
... School students recover Martian companion using Faulkes Telescope . ... We therefore decided to calculate positions 2 arc minutes and 6 arc minutes on either side of the predicted position to point the telescope, with the field of view being 4.7 arc minutes. ... Line of variation search (+ marks predicted position, O marks actual position) - Images obtained using the Faulkes Telescope North, operated by Las Cumbres Observatory . ... These observations were also sent to the Minor Planet Center. ...
[ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~dja/faulkes/horseshoe.html -- 8.7 Кб -- 02.02.2010
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12. ASP: Using Multicultural Dimensions to Teach Astronomy
... 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. ...
[ Сохраненная копия ]  Ссылки http://www.astrosociety.org/edu/publications/tnl/53/multicultural2.html -- 15.2 Кб -- 02.10.2012