... The Linear Ramp Filters provide a narrow band ( ) imaging capability which is continuously tunable from 3710 to 9762 . ... If it is necessary to know which CCD will be used, observers can consult Table 3.7 on page 48 or Table 3.8 on page 49 , or use the on-line LRF calculator tool on the WFPC2 WWW pages. It is possible to use POS TARGs with LRF observations; the offsets are made from the default pointing for the specified wavelength. ... POS TARG "X" = -0.09961 (235.7-414) = 17.76" , and . ...

Еще в разделе: (Показать все результаты (>19670) - www.stsci.edu/ )

• Fine Guidance Sensor Instrument Handbook
• Chapter 7: Observation Strategies
• Chapter 7:  Observation Strategies

... 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 (>9061) - www.arcetri.astro.it/ )

• Arcetri H2O Maser catalog
• Algorithm

HI spectral-line observations of galaxies (Karen O'Neil) . Measuring the width, flux, etc. of the HI profile of two galaxies, using some combination of : dwarf emission line, HVC emission line, spiral emission line, and spiral absorption line. This project was designed to demonstrate the fundamentals of spectral line observing and position switching. ... The types of galaxies observed in this project are being kept open and will be determined when the project LST is known. ...

Еще в разделе: (Показать все результаты (>5982) - www.naic.edu/ )

• Arecibo Galaxy Environment Survey (AGES)
• Spectral-Line Observing
• ON/OFF (Position Switching)

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. ...

Еще в разделе: (Показать все результаты (>373) - www.gao.spb.ru/ )

• Pulkovo NEO Page: Estimation of Observational Accuracy
• Pulkovo NEO Page: Ephemeris Support

Next: Observations Up: The Nuclear Region: HI Previous: The Nuclear Region: HI . There are mainly two questions to be addressed: 1) What causes the large velocity width (several hundred kms -1 ) of the absorption lines detected against the nuclear regions of galaxies? 2) Why are the absorption line widths observed against the nuclear radio continuum similar to those measured in emission over the whole extent of the galaxy? ...

Еще в разделе: (Показать все результаты (>28312) - www.atnf.csiro.au/ )

• Tidbinbilla
• Archive of VLBI Observations Majordomo List
• VSOP Observing Schedule

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Position of Central Source (J2000) : ( 23 01 08.3, 58 52 44.6 ) . ... Description: half shell, bright central AXP . ... Radio Images Page . ... Exposure uf . ... 4626 . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . ... Central pulsar not in field. ... Event 2 FITS File . ... see fit detail page for more about the fit. see chandra spectrum page for region used. ...

Еще в разделе: (Показать все результаты (>3920) - hea-www.harvard.edu/ )

• Chandra Images for G359.2-00.8
• Chandra Images for G065.7+01.2
• Chandra Images for SNRJ 0540.1-6919

... 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. ...

Еще в разделе: (Показать все результаты (>2082) - www.sao.ru/ )

• Results and Discussion
• What was measured?
• SNR observations list by S.Trushkin

Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...

Еще в разделе: (Показать все результаты (>1132) - jet.sao.ru/ )

• Fabry-Perot Interferometer: Gallery Old
• Observations and spectra reduction
• SCORPIO: IFP Gallery

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”) . ...

Еще в разделе: (Показать все результаты (>690) - www.ipa.nw.ru/ )

• LAB Ephem. Astronomy-ERA

Next: Comments on Individual Sources Up: Sample Identification Previous: Sample Identification . In Figure 2, we show the spectra of the optical counterparts to 85 of 97 observed X-ray/radio sources. ... Positional information for all 85 sources for which we announce identifications herein are given in Table 3, including information from WGACAT, the PMN and Green Bank surveys, the NVSS and our ATCA survey. ... Of the 85 newly identified sources, 59 are FSRQs, and 22 are BL Lacs. ...

Еще в разделе: (Показать все результаты (>31739) - www.eso.org/ )

• Sample Identification
• FORS1 Photometric System Characterization
• ESO - ALMA

Left: An image in the near infrared (1.65 ЮМm) around RY Tauri, using a special mode of the Subaru HiCIAO coronagraph, the polarized intensity image. This type of observation is preferred for faint emissions associated with scattered light around planet-forming disks, as there is less light from the much brighter star. ... A white ellipse shows the position of the midplane of the disk, which is observed at millimeter wavelengths. ... Right: Schematic view of the observed infrared light. ...

Еще в разделе: (Показать все результаты (>6261) - www.astronomy.com/ )

The problem of solar wind data correlation for the observations onboard several spacecraft is very important for three points of view: . ... This problem is studied now in detail by systematic determination of ion flux and ion velocity data correlations by INTERBALL-1 (IKI group), WIND and IMP 8 (both - MIT group). ... Solar wind plasma correlation lengths from IMP 8, WIND and INTERBALL-1. ... Correlation of solar wind observations onboard several spacecraft: INTERBALL-1, IMP 8 and WIND data. ...

Еще в разделе: (Показать все результаты (>1364) - www.cosmos.ru/ )

• Events on January 10-11, 1997 - INTERBALL observations
• The Wind Spacecraft
• Two points (INTERBALL-1 and MAGION-4) observations of magnetopause motion

... 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. ...

Еще в разделе: (Показать все результаты (>104) - www.accuracy.puldb.ru/ )

... 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. ...

Еще в разделе: (Показать все результаты (>3190) - star.arm.ac.uk/ )

• Observations with the Faulkes Telescopes
• Armagh Observatory
• Faulkes Telescope

Computer Ephemeris for 2016 from DE200/LE200. Longitude of central meridian of Uranus. ...

Еще в разделе: (Показать все результаты (>126) - space.univ.kiev.ua/ )

• Central meridian positions for physical observations of Saturn for Computer
• Central meridian positions for physical observations of Neptune for Computer
• Central meridian positions for physical observations of Jupiter for Computer

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

Еще в разделе: (Показать все результаты (>1809) - www.adass.org/ )

• Modern CCD Observations of Moving Celestial Objects: Algorithms and Software
• The Co-Addition Technique Applied to Images of Galaxy Cores
• NICMOS Software: An Observation Case Study

... 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 (>1021) - www.astrosociety.org/ )

• ASP: Guest Observer

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

Еще в разделе: (Показать все результаты (>258) - www.stecf.org/ )

• The Structure and Composition of High Redshift Radio Galaxies
• Unusual Emission near a Compact Source in Orion
• NICMOS/HST H-band (F160W) Images of the 30 Dor Starburst Cluster

Visual Discovery of SN 1996X in NGC 5061. ... It was not until the IAU Circular was issued that we found out there had been an independent amateur photographic discovery of this supernova by Kesao Takamizawa of Japan. ... Earlier in the week, 660 galaxies had been observed during two nights we had use of the 40 inch telescope at Siding Spring. ... The supernova in NGC 5061 was first seen with the smaller telescope about 10pm local time on Friday, April 12 (April 12.5 UT). ...

Еще в разделе: (Показать все результаты (>3192) - www.sai.msu.su/ )

• Light Curve Templete/Observing Form For Visual SNe Observers.
• IAUC guidelines.
• Contributions by amateurs: SN1995V.

... 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. ...

Еще в разделе: (Показать все результаты (>7099) - xmm.vilspa.esa.es/ )

• Pile-Up in the RGS
• LARGESCALESENS
• XMM-Newton Trainee Project 2004