... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

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... Chapter 9: Space Telescope Imaging Spectrograph (STIS) > 9.4 Mode = ACCUM Config = STIS/CCD . 9.4 Mode = ACCUM . Config = STIS/CCD . ... 9.4.5 Number of Iterations and Time Per Exposure . ... Specifies the number of subexposures into which the specified exposure is to be split for the purpose of cosmic ray elimination in post-observation data processing (see the STIS Instrument Handbook ). The specified exposure time will be divided equally among the number of CR?SPLIT exposures requested. ...

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• Space Telescope Imaging Spectrograph Instrument Handbook
• ACS Instrument Handbook for Cycle 20
• NICMOS Data Handbook

... Observation codes for VSOP General Observing Time observations have the form . ... The first letter indicates which AO period the observation was proposed in: the letter `v' indicates the first AO period, and the letter `w' indicates the second and third AO periods. The three digits indicate the proposal number. ... For proposals with more than 26 experiments (see next item), 300 is added to the proposal code for the 27th and subsequent experiments. ...

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• Number input
• CORCHAN
• difx:vdifio [ATNF VLBI Wiki]

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

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• Time Functions
• Integer Functions, Random Number, String Conversion, Searching and Sorting:
• The prime focus echelle spectrograph and the MSS

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

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• Fit a source with a small number of net counts
• Jonathan's ASC/SDS documents
• A quick look at tweets about JWST@SXSW

Download Izmccd (~2.7 MB). ... for 1-5 bytes is number of a numbered minor planet, . ... Positions 1-80 file "mpcreportiz.txt" are similar to positions of file "mpcreport.txt". 83-95 – errors of unit weight, . ... If this tag is " 1 0 " , this record contains results of measurements of an image of object (approximation by "PSF"),  . ... 57-66 – error in X (pixels), for first star in a multicentric image, for subsequent it is error in (distance between first star in the image and this), . ...

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... Earnshaw's second clock has a 5-bar compensation pendulum of steel and zinc, an 8-day movement, rated at very nearly sidereal time. ... 8 day English regulator in mahogany case, signed by Thomas Earnshaw, London, C179O. Maximum external dimensions (Cms): Height:l84 Width:45 Depth:3O.5 . ... Original five bar Zinc and Steel gridiron pendulum, suspended on a gold painted,cast iron pendulum support, firmly screwed to the backboard of the case. ... The dial is signed: "Earnshaw London" across the centre...

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• Numbers and distances
• IAJ: Contents - Volume 23 Number 2
• IAJ: Contents - Volume 24 Number 1

... LOC will arrange transportation of Conference participants from the Kazan airport to the hotels. ... According to the rules, everyone has to go through passport control and customs upon arrival at their first stop in Russia (in the most cases it is Moscow). ... If you have a direct flight to Kazan then passport control will be in Kazan. ... First eROSITA International Conference: Mapping the Structure of the Energetic Universe 17-20 Oct 2011, Garmisch-Partenkirchen (Germany) . ...

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• Комментарии к ключам заголовков файлов формата FITS

XMM-Newton Science Analysis System . rgssources (rgssources-6.0.1) [xmmsas_20070708_1801-7.1.0] . ... Upgrading the format. rgssources can also deduce the exposure number from the standard file name formats described above. ... If the file name is not in a standard format, and the exposure number is not otherwise known, its use can be turned off by setting writeexpkwds to `no' or `false'. ... XMM-Newton SOC/SSC -- 2007-07-09 ...

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• Definitions

... Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Xavier Caruso (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... Number theory seminar . ... One of the goals of the semester is to convey the essential unity of the subject, especially to young mathematicians who use number theory in their research. ...

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• The field of p-adic numbers and its finite extensions (Spring 2010)
• Conference "Algebraic Geometry and Number Theory"
• Algebraic Number Theory

The starting page - The catalogues page - The list of the PUL2 fields - The list of the Pul-3(Pul-3SE) fields - The list of the PUL_ERS fields . please read short description of the access form controls . ... Right Ascension (ICRF/Tycho-2) J2000 at the central epoch of obs. (hours, minutes, seconds) (Obligatory parameter) . ... proper motion in RA (*cos(DE)) (ICRF/Tycho-2). (mas/yr) . ... Check the apropriate checkbox to output these data and radiobutton to select stars within interval. ...

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• Pulkovo Database of Observations of Visual Double Stars

.

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• ESO - A number of OmegaCAM filters show vignetting in their central regions.
• Frequently Asked Questions
• FORS Sec Std and Abs Phot Project

... The numbers of three types of compact binaries containing accreting NSs and BHs, which are most interesting from the point of view of their observational appearances, have been calculated as a function of time: i) X-ray transient source containing a NS in an eccentric orbit around a main sequence Be-star (the observed prototype: A0535+26), ii) BH The evolution of the selected types of X-ray binaries during the first 10 million years after the starburst onset is presented in Fig. ...

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• The Number of Ejectors in Binaries
• The COOC Criterion (Criterion of Observations versus Calculations)
• Critical Frequencies and Gravitational Wave Detector Halfwidth for

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

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• http://www.wdcb.ru/stp/data/solar.act/sunspot/YEARLY

... Office . Department . Phone(939+) . ... Director . ... Deputy director . ... Secretary of director . ... Foreign office . ... Personnel department . ... Business office . ... Managing deputy director . ... Security department . ... Department of emission stars and galaxies . ... Variable stars department . ... Laboratory of astrophotometry . ... Stellar astrophysics department . ... Relativistic Astrophysics Department . ... Department of Astrophysics and Stellar Astronomy . ... Back to SAI ...

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• Number of Supernovae discovered by amateurs since 1957.
• Zen: SkyPixelization
• JavaScript Random Number Tester

... The tension in members of the telescope changes as we move the dome, ch, azimuth, and tiedown tensions. The lifetime of a beam is counted in the number of times the change in tension goes through a cycle. ... Examples of telescope motion with corresponding unbalanced moment. ... The number of cycles were computed for : 5000, 10000, 15000, 20000 kipFeet momemnt change. ... The number of cycles on the telescope was computed using the change in the unbalanced moment (at a corner). ... cycles . ...

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• ATOMS by Number
• Arecibo Planetary Radar Status
• Drift Map

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

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• Head Litter of Minor Planet Names
• ENGAMPLE
• Keywords_109

... Number nine will put you on the spot. ... Naughty number nine. ... Is that it's one less than ten. You see, nine is the same as ten minus one. ... I mean, eight times nine is 80 minus eight, . And seven times nine is 70 minus seven, . And six times nine is 60 minus six. ... With naughty number nine. ... One times nine is nine, and two times nine is 18. Mean ol' number nine. ... Eight times nine is 72, and nine times nine is 81, . ... With naughty, nasty, mean ol' number nine. ...

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• Three Is A Magic Number
• Springer LINK:A&A-EE: Table of Contents Volume 318 Number 3 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 322 Number 3 (1997)

Next: Program use Up: Description of program searchdup Previous: Description of program searchdup . Parameter input is done with a graphic user interface. ... Input file: Name of the input catalog file. It has to be formatted, one record per source/observation, according to the format used in the Arcetri observations and source archives. ... Minimum number of observations per source Source with less than this number of independent observations are not included in the output file . ...

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• Increasing number of files in system
• Can register_*dev() assign an unused major number?
• Register_*dev() can assign an unused major number.

... Номер следующего наблюдения устанавливается всегда автоматически, однако существуют ситуации, когда нужно переустановить номер следующего наблюдения (например, предыдущее наблюдение было ошибочным). Это делается командой: NUMBER/NICE [новый_номер] . Например: . NUMBER/NICE 10 установить следующий номер равным 10 . При отсутствии параметра программа сначала покажет старое значение для номера следующего наблюдения, а после этого, запросит новое значение. ...

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• DRAO surveys
• The Einstein Two-Sigma Catalog
• Specifying Pixels in an Image