... The amount of energy encircled by an aperture used for stellar photometry will depend on both the aperture size, and also on any variations in the PSF with field position, time, etc. ... The differences in photometric magnitude between apertures with various radii (i.e. aperture corrections), and their mean and standard deviations for the F555W filter, are presented in Table 5.5 . ... Variations in the PSF with field position will, of course, cause a position dependence in the aperture corrections. ...

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• PSF Variations with Time
• Optical Distortion
• PSF Variations with Time / OTA Focus

Optics includes the surveys and adjustments to the reflectors as well as the pitch, roll, and focus measurements. ... 080515: platform/tiedown motion during vlbi cal scan . ... Surveying the primary reflector . Surveying the dome position from AO9 . ... year 2002:Td inches/platform inch, TdPos vs temp at platform focus position. dec03: platform corner height vs za when looking at tower. jan10: dynamic load on tiedowns from platform motion. 22feb10: fit tiedown tensions using 2008,2009 data . ...

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• talk_3_photo
• byu phased array feed.

... We measured these galaxies individually, and they are distinguished in our list by the suffixes a, b, c,... in order of increasing J2000 right ascension. ... The first column contains the UGC catalog number, to which we have added lower-case suffixes a, b, c,\dots in order of increasing J2000 right ascension to distinguish individual galaxies in groups. ... The third column lists the degrees, arcminutes, and arcseconds of J2000 declination plus the rms uncertainty in arcseconds. ...

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• What was measured?
• Source Positions
• HyperLEDA documentation: parameter: celpos

... Tiny Tim has been used for generating Hubble Space Telescope ( HST ) point-spread functions (PSFs) for deconvolution, algorithm testing, proposal planning, and optical studies. ... Tiny Tim is a stand-alone program for simulating HST PSFs as viewed with the on-board imaging cameras (WF/PC-1, WFPC2, FOC, COSTAR/FOC). ... The measured aberrations for FOC f/96, WF/PC-1 PC6, WFPC2, and COSTAR/FOC are used by Tiny Tim . ... Figure: FOC f/96 observed and Tiny Tim model PSFs (pre-COSTAR) at 253 nm. ...

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• Calculating the Position and Velocity Components of HST
• Towards Optimal Analysis of HST Crowded Stellar Fields

... Files . ... File List . ... measures . ... 00074 // Note that the normal usage of these tables is through the Measures system. 00075 // 00076 // note 00077 // A message is logged (once) if a date outside the range in 00078 // the Tables is asked for. 00079 // /note 00080 // thrown 00081 // li AipsError if table opened has wrong format or otherwise corrupted. 00082 // /thrown 00083 // /synopsis 00084 // 00085 // example ... Generated on Fri Sep 3 2010 13:07:09 for casacore by 1.7.1 ...

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• casacore: measures/Measures/SolarPos.h Source File
• casacore: casa::SolarPos Class Reference
• POLARIZATION PROPERTIES OF TWO PULSARS

... Guider functions . ... Guide Sensor Performance . ... Guide Sensor Sky Coverage/ Star Availability . Guide Star Selection Criteria . ... Guide fiber organization and reach at plug plate . ... Plug plate holes for guide stars are identical to those for science FO . ... FOV for each of 9 guide stars is 7.4 arcsec dia. (0.45 mm FO, Sumitomo IGN-05/10) . ... Selected guide stars must have no neighbor stars within TBD (5 arcsec) radius that have a brightness within TBD (5 mag.) of guide stars . ...

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• Astrophysical Research Consortium - Apache Point Observatory
• Guider Mechanical Commands
• Zerostep Procedure

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

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• Armagh Observatory
• PhD position, Centre for Astronomy, NUI Galway: deadline 18 July 2008 |
• David Asher home page

I/146 Positions and Proper Motions (Roeser+ 1988) ================================================================================ Catalogue of Positions and Proper Motions Roeser S., Bastian U. =1988A .. ... 449R ================================================================================ ADC_Keywords: Positional data; Proper motions Description: PPM North gives J2000 positions and proper motions of 181,731 stars north of -2.5 degrees declination. ... The mean epoch is near 1931. ...

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• Positions and Proper Motions - South
• Supplement to the PPM Star Catalogue

... Archives . ... ArXiv] 1st week, Dec. ... The full article is found from [arXiv/astro-ph:0712.1037] . According to J. P. Dietrich , the positional citation effect (PCE) is significant so that preprints appeared at the top of daily lists tend to be more cited than other preprints. ... Tags: astro-ph , citation , positional citation effect . ... Check [astro-ph:0805.0307] Disentangling Visibility and Self-Promotion Bias in the arXiv:astro-ph Positional Citation Effect 05-05-2008, 9:52 pm . ...

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• *tvmark* - Mark pixel positions on the display
• The AstroStat Slog Blog Archive [Jobs] postdoc position at UC Berkeley
• *tvimcontour* - Overlay contours and/or source positions on the display

Sojourner's View: The Sagan Memorial Station . ... Credit Copyright: Sojourner Team , JPL , NASA Explanation: The robot rover Sojourner sees Mars from the perspective of a house cat . During the 7 month cruise to Mars aboard the Pathfinder spacecraft, Sojourner measured only seven inches tall in a stowed position but prowling the martian landscape it has stretched to its full height of 1 foot (30 centimeters). ... Click here to download a movie gif of Sojourner creeping toward Yogi. ...

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• Sojourner's View: The Sagan Memorial Station
• XWare > APOD
• Астронет > Sojourner's View: The Sagan Memorial Station

... Q 12.649 0.523 0.342 -0.108 4444 -4.647 -4.582 "n6231_ 178" 16 53 48.63 -41 51 54.1 J2000.0 ! ... A few lines are then added to the top (see readme_asc2dxf for details) to produce input for asc2dxf :in.coo: n6231cp6.dxf slot line 2.00 43.00 9.00 43.00 point 9.773 19.026 n6231 _ 171 Q 12.649 11.236 57.382 n6231 _ 178 I 14.533 ... the output of this program is as follows :n6231cp6.dxf: 0 SECTION 2 ENTITIES 0 CIRCLE 8 1 62 3 10 43.00 20 43.00 30 0.000 40 43.00 0 ...

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• http://www.mso.anu.edu.au/gsaoi/gallery/rsaa/pics/brochure.pdf

... POLAM-P . ... HOME . ... ABOUT LOMO . PRODUCTS . MICROSCOPES . ... SURGICAL MICROSCOPES . ... Home Products Microscopes POLAM-P Three Position Interference Slider . ... Three Position Interference Slider with filters of wavelengths 480 nm, 590 nm, and 625 nm. ... LOMO America, Inc. ... 847) 215-8800, Fax: (847) 215-9073 . ... 2000-2016 LOMO America,Inc. ...

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• INVERTOSCOPE
• RPO-11T

... Activity 3: Measuring the Position of the Sun in the Sky . Purpose: To give students the opportunity to measure the position of the Sun in the sky using simple tools and methods. ... Alternatively, you may have students devise their own methods of relative measurement and apply them to measuring the position of the Sun in the sky. ... Rangi is the sky, and when the Sun is near Rangi's head it is summer in New Zealand. ... Read the Maori story to students. ... back to Teachers' Newsletter Main Page ...

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• ASP: Indiana Jones and the Astronomers of Yore
• ASP: Richard Berry CCD Workshop
• ASP: Making Your Own Astronomical Camera

Stellarium 0.12.3 . ... Classes . ... gSatTEME Class Reference . Sat position and velocity predictions over TEME reference system. ... Set compute epoch for prediction. ... gVector љ . ... Get the TEME satellite position Vector. ... Get the Geographic satellite subpoint Vector calculated by the method compute SubPoint. ... gVector Satellite position vector meassured in Km. x: position[0] y: position[1] z: position[2] . ... gVector Satellite Velocity Vector measured in Km/s x: Vel[0] . ...

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• Stellarium: Position Struct Reference
• Stellarium:
• Stellarium: ScreenImage Class Reference

... Pre-university education . ... SSAU History . ... Webometrics presented an updated version of the world ranking of universities, which assesses the presence of universities in the Internet. ... Among 22 thousand universities ranged by Webometrics experts, SSAU occupies the 38th place among Russian universities, and the 2406th position in the overall rankings. Just in one year the Aerospace University rose immediately on 1379 points in the global rating and on 48 in the Russian part of the list. ...

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• SSAU improved its position in two Russian ranking at once
• Just in six months SSAU has significantly advanced in the world ranking of

... Polarizer efficiency is defined as , where and are the respective measured signals for a polarizer oriented parallel and perpendicular to the axis of a fully polarized beam... angle 12.2 . Polarizer position angle as measured from the NICMOS Aperture Offset Angle of , about the aperture center toward the +U3 axis.. IDL 14.1 . IDL (Interactive Data Language) is an interactive analysis and visualization program written by Research Systems, Inc.... resolution. ...

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• ST-ECF IRAF package
• Some Experiments with the Restoration of NICMOS Camera 2 Images of OMC-1
• Imaging Polarimetry with NICMOS

. Next: A/Z correction Up: Работа с программой Previous: Кнопки управления . Рисунок на панели Dome position отображает положение купола. Функциии кнопок, расположенных рядом с рисунком, описаны выше.

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• Bus Hound
• di_eks
• Laboratory for the Stellar Magnetism Study of SAO of the RAS - Staff

The following parameters as a function of the universal time are enclosed in this file. 1. no . ... Universal time date (YYYYMMDD) . ... Universal time (.hhmmss) . ... Geomagnetic local time in the satellite position . ... geomagnetic latitude . ... co-ordinate - . ... system . ... co-ordinate system . ... Solar-ecliptic co-ordinate - . ... Satellite velocity . ...

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• Two points (INTERBALL-1 and MAGION-4) observations of magnetopause motion
• The INTERBALL Auroral PROBE orbital elements
• The INTERBALL Tail PROBE orbital elements

... The STECF IRAF layered package impol provides five tasks specifically aimed at reduction of HST imaging polarimetry data for ACS, FOC, NICMOS and WFPC2. ... Reduction of HST polarimetry data and simulation of raw polarimetry images, together with polarization vector plotting, are covered. ... hstpolsim -- Produce simulated polarization input data frames for HST instruments from images of the total signal, the linear polarization and the position angle of the polarization vectors. ...

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• Sample Identification
• ESO - ALMA
• 1994 TG2

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

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• http://www.puldb.ru/laza_gao/FOR_page_11/grosheva-june2012Paris.pdf
• http://www.puldb.ru/laza_gao/PUB/iau248_1.pdf