Next: Column NDETUSED Up: Passbands Previous: Column FILTCODE_ n . If ``neutral'' filters are used, their quantitative effect should be stored in a column named NDVALUE. The real number stored here should normally be the factor by which the intensity measured through the ND filter should be multiplied to be on the same scale as data taken without the ND filter. ... Because ``neutral'' filters are not really neutral, the value will differ somewhat from one passband to the next. ...

Еще в разделе: (Показать все результаты (>1711) - www.sao.ru/ )

• Descriptor NFILTCAR

... Tools . ... In order to generate random numbers that follow a normal distribution, one first needs to create two uniform random numbers $u_{1}$ and $u_{2}$, in the range of 0 to 1. ... begin{equation*} g_{1} = \sqrt{-2 \ln(u_{1})} \cos(2 \pi u_{2}) \end{equation*} . ... Random numbers following a power law, $P(x) \propto x^{n}$, can be generated from a single uniform random number, $u$, in the range of 0 to 1 through the following transform : . ...

Еще в разделе: (Показать все результаты (>18805) - www.atnf.csiro.au/ )

• casacore: casa::Normal Class Reference
• casacore: casa::LogSinkInterface Class Reference
• casacore: casa::Dummy_Constants_class Class Reference

... Data Reduction FAQ > A number of OmegaCAM filters show vignetting in their central regions. What are the causes for this and what are the dimensions of these features? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... A number of OmegaCAM filters are not monolithic, but consist of four segments (each covering 8 detectors) that have a central cross-shaped support structure. ... Filter . ...

Еще в разделе: (Показать все результаты (>45691) - www.eso.org/ )

• ESO - I derived quantities related to the performance of an instrument. How do

Next: Inspection of results Up: *fit* - Fit Data Previous: Verbose Mode . If the number of net counts for a source is less than it is impractical to fit the data in all 34 energy bits. However, if the flux is required, then a fit must be performed first. ... Fit will then calculate the normalization of the model and xflux can be used to determine the flux and luminosity of the source from the best fit model. xs> fit rebin=yes . ...

Еще в разделе: (Показать все результаты (>2447) - hea-www.harvard.edu/ )

• Spatial Region Coordinates
• The AstroStat Slog PDF
• Jonathan's ASC/SDS documents

lbfb - control the lband filter bank SYNTAX: lbfb {} {filter filter filter.. ARGS: noarg list the filter numbers and their frequency ranges. filter filter number 1-9 to include DESCRIPTION: Select the filters to use in the lband filter bank (between the dewar and the post amps). Enter 1 or more filter numbers to use. ... EXAMPLES: lbfb 5 use filter 5 (1100-1800 mhz). lbfb 2 3 use filter 2 (1120-1220) and filter 3 (1230-1470) lbfb filter freq 1 1370 hipass (ext Output unit. ...

Еще в разделе: (Показать все результаты (>4219) - www.naic.edu/ )

• http://www.naic.edu/~phil/lbw/filters/lbw_filter3b_nov05.html
• ATOMS by Number
• high resolution decimation test

We present the basics of number theory emphasizing the striking similarity between the properties of usual integers and those of polynomials over a finite field. This leads to understanding that number theory and algebraic geometry is in fact one and the same domain. The core of number theory being an elementary problem, we stick to concrete examples. ... P-adic numbers. ... Algebraic number fields. ... Geometry of numbers. ... S. Lang, Algebraic number theory, Springer, 1994. ...

Еще в разделе: (Показать все результаты (>814) - www.mccme.ru/ )

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

... Viking Orbiter Mission 1975 . ... YY = sequential number of image during orbit . FILTER . ... Scale of one pixel at center of image . ... Azimuth of (direction to) North, measured clockwise from zero line defined by a horizontal line drawn from the center of the image perpendicular to the right edge . SUN AZ . Azimuth of (direction to) Sun, measured clockwise from zero line defined by a horizontal line drawn from the center of the image perpendicular to the right edge . ... SUNS LS . ...

Еще в разделе: (Показать все результаты (>7789) - www.arcetri.astro.it/ )

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

Pulkovo Photographic Plate Database . To find a certain plate, type its number, choose instrument and click button FIND Instrument: Normal Astrograph 26-inch refractor Plate number: . To find plates with a certain sky area: choose instrument, type coordinates (R.A. and Dec.) of the center of this area, type radius of this area, type (optionally) names of required objects, and click button FIND . ...

Еще в разделе: (Показать все результаты (>486) - www.puldb.ru/ )

previous next contents properties index . ... number> . undefined . ... number> , <number> , <number> , <number> . ... uri> . ... normal | ... ultra-expanded ] [, [ normal | ... oblique ] [, [normal | ... small-caps] [,[normal | ... 100 | 200 | ... 900] [, [normal | ... uri> [format( <string> [, <string> ]*)] | font-face-name> ] [, <uri> [format( <string> [, <string> ]*)] | ... urange> [, <urange> ]* . ... urange> ]? [ <number> ]+ [,[ <urange> ]? <number> ]+] . ...

Еще в разделе: (Показать все результаты (>3508) - crydee.sai.msu.ru/ )

• Long description for normal flow example
• Naughty Number Nine
• Three Is A Magic Number

Hide Zen home . ... Extent is a shortest and non-nested sequence of words, which satisfy a query . ... We don't consider normalization of document weight to 1, since we have no global information about document collection. w{i}, len{i} - weight and length of i-th extent . ... Next - the number of unique extents. freq{i} - frequency of i-th extent . We could consider strict and soft uniqueness of an extent, depending on how do we consider the order of words in extent. ... 2 - document length . ...

Еще в разделе: (Показать все результаты (>1721) - www.sai.msu.su/ )

• Torsten Martinsen's GIMP plug-ins
• Open Source Convention
• Zen: Tsearch2WhatsNew

... PISTON piston . ... this command is not used by the TCC The guide camera mechanical controller sets the filter, focus and other mechanical functions, but not the position of the guide camera in the focal plane. Positioning, if available, is handled by one or two guider position axes controllers , one per axis of motion. ... Notifies the controller that subsequent commands apply to the guider mechanical controller. ... Sets the piston of the guider to the specified value (in decimal microns). ...

Еще в разделе: (Показать все результаты (>584) - www.apo.nmsu.edu/ )

• what to do with the trace data
• Astrophysical Research Consortium - Apache Point Observatory
• TUI:Scripts:Built In Scripts:Telescope:Pointing Data

... The absolute magnitude of the RCBs in the LMC and the small number of Galactic RCBs implies that they are very rare stars. Together with statistics for related stars, the total number of hydrogen-deficient stars in the Galaxy is estimated to be about 1000 ([ Warner 1967 ]). Whilst the luminosity of RCBs is similar to that of other low-mass stars as they evolve rapidly from the asymptotic giant branch to become white dwarfs, their frequency is much lower. ...

Еще в разделе: (Показать все результаты (>2181) - star.arm.ac.uk/ )

• Armagh Observatory
• IAJ: Contents - Volume 26 Number 2

adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

Еще в разделе: (Показать все результаты (>879) - www.astrosociety.org/ )

• ASP Member Change of Address, Phone Number, and Email Address

A prefs.ccd file should be located in /usr/local/observatory/prefs on the computer to which the camera is attached. ... Parameters that will be read by prefs.ccd are -- ccd.frame_count_multi Sets the maximum number of frames in multi mode Default is 10 Minimum is 2 No maximum ccd. filter _max Sets the number of filters in the filter wheel Should be less than or equal to the number of slots available ccd. filter _01 to ccd. filter _10 Labels for each ...

Еще в разделе: (Показать все результаты (>693) - www.astro.louisville.edu/ )

• http://www.astro.louisville.edu/software/sbig/xmccd-5.1/CCDCOMMANDLIST
• http://www.astro.louisville.edu/shared_skies/archive/select/comets/ison/20120929/ison.txt
• ExtendedPlugInFilter (ImageJ API)

... Shock is a non-linear plasma wave generated by plasma flow (Burgess, 1995). ... Shocks are thus places where plasma and field go through dramatic changes in density, temperature, field strength, and/or flow speed. If there is no plasma flow through the surface (Un <> 0) or there is no dissipation and compression across it, we talk about discontinuity only, not shock. ... Contact discontinuity . ... Plasma pressure and field strength increase at shock; magnetic field bends away from normal . ...

Еще в разделе: (Показать все результаты (>1118) - www.iki.rssi.ru/ )

• Identities
• Planetary Picture List
• Elements of Algebra

Astronomy Discussion Forums . Forums: . ... How Do You Feel About Numbers? ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on September 15, 2002 16:22:25 UTC . ... Wait - harvey1 - September 15, 2002 - 22:20 UTC . I don't follow you! - doctordick - September 16, 2002 - 14:59 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Еще в разделе: (Показать все результаты (>315) - www.astronomy.net/ )

• A Number Is A Very Specific Thing - an Astronomy Net Exploration Forum Message
• The Telescope's F/number - an Astronomy Net General Forum Message
• Nothing? Beyond Numbers... - an Astronomy Net God Science Forum Message

... Insert date: . Day: . Month: . ... This CGI -script calculates a day of week of the given date, Julian date of Greenwich noon JD and extracts from the database indices of solar activity: Wolf number for the day W , monthly W m and yealy means W y of Wolf number for month and year of the date. The prediction of Wolf number (which was made in 1998 and, hence, lost actuality) is also presented. The database uses solar activity data got from server of National Geophysical Data Center . ...

Еще в разделе: (Показать все результаты (>261) - www.gao.spb.ru/ )

• Structure of the database files
• Glass Library
• Extended time series of Solar Activity Indices

. Full screen versions . Number - magnitude counts . Number - redshift counts . | Front page | . | << - Redshift wedge | Completeness estimates - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

Еще в разделе: (Показать все результаты (>13) - www.2dfquasar.org/ )

• Dunk Proceedings - 2dF QSO Redshift Survey (Number-Magnitude Relation)

from numarray import * from numarray.random_ array import * size = 8640 # Number of observations flare = 1.1 # Size of flare counts = 1208*4*4 # Number of counts in the absence of a flare threshold = 0.97 # Threshold of mean flare flux at which you claim a flare . seed() # start up the random number generator photons = poisson ( counts ,[ size ]) # set up poisson noise ...

Еще в разделе: (Показать все результаты (>569) - www.mso.anu.edu.au/ )

• Mach-numbers in a simulation of convection in the sub-giant Eta Boo
• Images taken by 2002-2003 RSAA Summer Scholars on the SSO 40 inch telescope
• Magnitudes

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

Еще в разделе: (Показать все результаты (>69) - www.accuracy.puldb.ru/ )