In many instances one desires a certain SNR, and wishes to solve for the corresponding exposure time. Given the SNR, Equations 6.6, 6.7, or 6.14 can be solved for the exposure time, t . Since there are time-dependent and time-independent noise sources, quadratic equations are obtained. For example, we may solve equation 6.6 for the point source exposure time: . where the term A contains the time-independent noise sources . and B contains the time-dependent noise sources . ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

... Instruments are more complicated than star catalogs, but a MIDAS table file is still useful for holding the description of an instrument. ... The main sub-table contains information about the passbands used, and the second sub-table describes the detector(s). ... Basic data for an instrument file include the passbands used (and any coding that is used to represent them in the data); the detectors used, and their properties; and general information about temperature control and optical cleanliness. ...

... Created: 23 February 2001 . ... SOFTWARE MAINTENANCE MANUAL . ... 9 January 2001 . ... Note: in the final document, the table of contents will be to third level] . The Software Maintenance Manual describes the procedures for installation and maintenance of the software for the Gemini Near-infrared Integral Field Spectrograph (NIFS). ... Section 19.4.3 of the document “Programmatic Requirements for Gemini Instrumentation Development” states the requirements for the Software Maintenance Manual . ...

... Circles are used to depict the source positions. ... A optional ID label can also be displayed alongside the circle, corresponding to the row num- ber of that source in the input source list. ... These circles are in fact DS9-type regions, which can be written out to a le for future use (for example, when running a later DS9 session) by setting withregionfile to true, and specifying the desired le name via the regionfile parameter. ... This is a text le containing region descriptions for each source...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... Institute of Solar-Terrestrial Physics, Lermontov St. 126, Irkutsk, Russia 664033, E-mail: root@sitmis.irkutsk.su . ... Special requirements, convenience, and efficiency led us to the creation of an expanding library of IDL routines and programs, described herein. ... In response to inherently specific features of our instrument, the SSRT, and to our research needs and preferences, we have developed, supplemented, and corrected some routines from the standard IDL library. ...

Monte Carlo Methods for Including Calibration Uncertainties in Model Fitting Analyses Jeremy J. Drakea , Peter Ratzlaffa , Vinay Kashyapa , Richard Edgara , Rima Izemb , Diab Jeriusa , Herman ... University, Cambridge, MA 02138 MIT Kavli Institute for Astrophysics and Space Research, Cambridge, MA 02139 b c SUMMARY · Instrument response uncertainties almost universally ignored in astrophysical X-ray ... Limiting accuracy of Chandra ACIS reached in spectra with 10 4 counts. ...

... Space Research Institute . ... Space Research Institute of the Russian Academy of Sciences . ... Short history of IKI with respect to it's directors and main missions . ... Main results . ... Venue: Space Research Institute and Russian Academy of Sciences . ... The interview with the director of Space Research Institute of the Russian Academy of Sciences Academician Lev M. Zelenyi . ... Space Research Institute of the Russian Academy of Sciences (IKI), 84/32 Profsoyuznaya Str, Moscow, Russia, 117997...

THE PARAMETERS INVOLVED IN HAPKE'S MODEL FOR ESTIMATION OF THE COMPOSITION OF THE EJECTA LUNAR TERRAINS. ... In the previous papers we were estimated the surface roughness of the ejecta lunar terrains by means comparison of the local phase function and the average integrated lunar indicatrix. ... The Hapke's theoretical model of the lunar surface reflection. ... For THE PARAMETERS INVOLVED IN HAPKE'S MODEL: S.G. Pugacheva, V.V. Shevchenko a low-albedo lunar surface parameter Bo = 1. ...

... В четверг, 14 апреля 2016 г., состоится семинар кафедры астрофизики. Повестка дня . ... Начало в 11 час.15 мин. Ауд. ... В четверг, 31 марта 2016 г., состоится семинар кафедры астрофизики . ... В четверг, 24 марта 2016 г. , состоится семинар кафедры. ... В четверг, 17 марта 2016 г. , состоится заседание кафедры. ... ОСП НИИ ПММ Национального исследовательского Томского государственного университета) . ... Copyright 2016 Астрономия в Санкт-Петербургском университете . ...

An example of visual expert system. The program is written on Actor Prolog. -- -- (c) Alexei A. Morozov, March 19, 1999. ... Actually I wrote this program to train myself -- -- in carrying out SADT interview. ... A logical description of the blocks of the SADT model. ... The main purpose of these classes is keeping lists of cooking -- -- battery corresponding to various blocks of the SADT model. ...

THE 75th NAME-LIST OF VARIABLE STARS. ... The 75th Name-List consists of two tables. ... the literature, taken from positional catalogues, including USNO A1.0/A2.0 and GSC, or determined by the authors); the range of variability (sometimes the column Min gives, in parentheses, the amplitude of light variation; the symbol ( means that the star , in minimum light, becomes fainter, than the magnitude indicated); and the system of magnitudes used ( P are photographic ...

... Samara State Aerospace University Research Research and education centers Space Instruments Engineering Institute (IKP-214) . ... Developing and producing experimental test sets for modelling space environment factors interaction with spacecraft structural elements. ... Basic technolgy research set for testing equipment and interconnecting systems and small spacecraft carrying breadboard design, dynamic, thermal vacuum testing and testing of electronic equipment for electromagnetic compatibility. ...

. ( Asterisk * stands for "all" ) . Select project: * prognoz7 prognoz8 prognoz9 prognoz10 instrument: * monitor sks04 bud3k promics rf2p brod mode: * np2 np3 vp1 vp2 vp3 . Begin YYMMDD . End YYMMDD . Prognoz-7 . Prognoz-8 . Prognoz-9 (Relict) . Prognoz-10 missions. Back to the Data Archive . MSh

... 13th European VLBI Network Symposium . and Users Meeting . on September 20-23, 2016. ... 13th European VLBI Network Symposium and Users Meeting on September 20-23, 2016. ... Year book "Ephemerides of Minor Planets for 2016" on-line . ...

... Packet Format . ... The TCC broadcasts UDP packets containing position information. ... Packet Header . ... int4 . ... double . ... pos, vel double . ... pos, vel, time double . ... See the TCC Message Keywords Dictionary for full definitions of most items in the "data" section of the packet. pos, vel double is a structure containing two doubles: "pos" and "vel"; it contains the same information as the TCC's "coordinates" (p,v,t triplets), but with time given by the "TAIDate" entry in the packet. ...

... This API (Application Programming Interface) document has pages corresponding to the items in the navigation bar, described as follows. The Overview page is the front page of this API document and provides a list of all packages with a summary for each. ... Each package has a page that contains a list of its classes and interfaces, with a summary for each. ... Each of these pages has three sections consisting of a class/interface description, summary tables, and detailed member descriptions: . ...

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