Symbolic circuit-matrix processor and evaluator . ... This software is reliable over the range of benchmark circuit complexity (both *.CIR and *.MAT file). ... SYMBOL is a symbolic-algebra package which in contrast to REDUCE, MACSYMA, MAPLE, MATHEMATICA, MathLAB, MathCAD and other known multi-purpose systems is especially intended for analysis of any lumped, linear, time-invariant circuit. ... pure ASCII text . ... CIRSYM - SYMbolic CIRcuit processor used to format ASCII text file *.out for CALCSYM. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... It's semi-common knowledge that stars twinkle and planets don't. By semi-common, I mean that a lot of folks know that, but I also mean it isn't strictly true. Stars twinkle because we see them from the bottom of a sea of air. ... These small bundles of air act like little lenses, bending light as it passes through them. ... What we see is the light from the star flickering. ...

. Other Relevant Plots . Several new Radio-loud BAL QSOs . A unique Q+A QSO . | Front page | . | << - Close pairs | Talk summary - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

The most up-to-date information related to atmos 3.0 are collected here due to constantly increasing interest to MASS/DIMM processing software... atmos 3.0 is still beta , so the latest version is 2.97.5 (there is also 2.98.x branch which absorbs new features) . ... M' line: . ... free seeing and its relative error . ... dimm seeing and its relative error (if dimm data are present, zeros otherwise) . ... dimm turbulence power and its relative error (if dimm data are present, zeros otherwise) . ...

Coordinate Systems used for spacecraft trajectory description: . ... The HGI coordinates are Sun centered and inertially fixed with respect to an X-axis directed along the intersection line of the ecliptic and solar equatorial planes. ... Cometocentric (solar) Ecliptic Coordinate System (CSE) . ... CSE coordinate system for the SC POSITION: axis origin at comet center, X-axis to the SUN, Z-axis to ecliptic north pole, (X,Y)-plane is parallel to the ecliptic plane. ...

... We have compiled the Catalogue of extragalactic supernovae using the GCVS card catalogue. ... Doubtful (?), or rejected (-) SN 8 A1 --- RemFlag [*] The '*' indicates a remark in sn_rem.dat 10- 19 A10 --- Gal Parent galaxy designation 21- 22 I2 h RAh Right Ascension 1950 of Parent galaxy 23- 24 I2 min RAm Right Ascension 1950 (minutes) 25- 28 F4.1 s RAs Right Ascension 1950 (seconds) 29 A1 --- DE- Declination 1950 (sign) 30- 31 I2 deg DEd Declination 1950 of Parent ...

... Contents of the Tycho Catalogue Over view of the Tycho Catalogue: The Tycho Catalogue provides astrometr y (positions, parallaxes and proper motions) and two-colour photometr y (in B T and VT ) for more than one million stars brighter than VT = 11.5 mag. ... Stars in ver y dense clusters and other dense fields thus leaving the resulting Tycho Catalogue incomplete in such regions `R' in Field T42). ... The number of non-Hipparcos stars with Tycho Catalogue parallaxes larger than 40 + 4 mas is 1245. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... To improve the quality of ionograms and to carry out on automatic ionogram processing we have developed a special software, which can be arbitraly devided into the following main parts: . ... Ionogram processing software on the basis of image processing; . Interactive ionogram processing software. ... Here we present ionogram samples for different kinds of chirp sounding . ... Capabilities and samples | ...

... Sun images . ... Sun flares . ... Active areas . September : 2009 . ... No sunspots and sunspot groups can be currently observed on the Sun's surface . The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates . ... Coordinates and other characteristics of active regions are issued for September 09, 2009 00:31 UT . Last updated: September 10, 2009 00:00 UT . ... 7(499)132-65-96, Fax: +7(499)132-65-97 . ...

... Space flight . Crew training . ... Space camp . ... The "Odyssey" project includes all the stages of preliminary selection and pre-flight training of the inter-planetary station crew, as well as simulates a 7-day "Earth-Moon-Earth" space mission. ... Training in crews on the "MIR" space station trainers and simulators under the interplanetary "Earth-Moon-Earth" mission program, . ... A commander (carries out a general onboard control and is responsible for the crew safety and vital activity. ...

SAI VO . ... SAI CAS . ... Web Services . Catalog Access Services . ... SAI VO Wiki . ... Program Access . SAI CAS Wiki . ... arXiv.org Search . ... Astronomical Thesaurus . ... The following services are available: . ... Other web-services available from SAI CAS project . ... Astronet | SAI MSU | ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

RESEARCH OF EQUILIBRIUM STATE OF SPACE TETHER SSTEM CONSIDERING ATMOSPHERIC D RAG D , L A, Cq N P U The equilibrium equations of tether and subsatellite will be given with the consideration of tether mass, tether deformation and atmospheric drag. Space tether system equilibrium state will be obtained through solving the equilibrium equations of tether and subsatellite. ... Space tether system equilibrium state is obtained by calculating Tether and payload equilibrium state equations. ...

Following acceptable use statement forms basic principles of Russian Space Science Internet activity. ... Usage of the Russian Space Science Internet to support Russian space research and associated technical activities at non-profit institutions and centres of resarch and science is acceptable. ... All user requests for Russian Space Science Internet connectivity must be validated and supported by Network Coordination Centre at Space Research Institute RAS. ...

... In the light curve depicting their observations, definite trends are noted, here is a "thumb-nail" analysis of the the magnitude estimations of the bright SN (1989B) in the galaxy NGC 3627 (M66). ... 10 (IAUC # 4742) 2/25 13.3 16 j 2/27 13.5(*) 18 lc 2/28 13.8 19 p 3/1 13.2 20 w 3/2 13.5 21 a 3/4 13.8 23 p 3/6 13.3 25 c 3/7 13.3 26 c 3/8 14.1 27 m 3/8 13.3 27 r 3/9 13.4 28 c 3/9 14.1 28 m 3/10 13.6 29 j 3/10 14.0 29 a 3/11 13.6 30 c 3/11 13.5 30 r 3/11 13.7 30 s 3/13 [13.69 CCD Mag.] ...

... Ballistics, navigation and flight control of the spacecraft, going to the L2 point of Sun-Earth system. ... and calculation algorithms have been developed: - an algorithm, building nominal trajectories for one impulse flights to the L2 point of Sun- Earth system, including a Moon swingby maneuver or not. - an algorithm, calculating corrections of spacecraft trajectory needed for the flight from Earth to halo orbit and for stationkeeping of the spacecraft moving in halo ...

The rising tides. In 1777 Laplas made a report in the Paris academy about the rising tides and the falling tides. Their first model was considered by Newton and Kepler so that the rising tides and the falling tides were caused by the Moon and the Sun. This theory was developed by I. Bernully, Ailer and d'Alamber. Their scheme about the rising tides following on two directions (one to the Moon and the other to the Sun) was suited the non deep ocean in the stable planet. ...

... Chilingarian, I., Melchior, A.-L., Zolotukhin, I. 2010: Analytical approximations of K -corrections in optical and near-infrared bands , MNRAS, v. 405, p. 1409 (also arXiv:1002.2360) . ... Calculator . ... calculate spectral energy distributions , K-corrections calculator , UKIDSS YJHK , K-corrections of galaxies , spectral based k-corrections , SDSS filter set K-corrections , K correction code IDL , kcorrect IDL C , . ...

. Home . Structure of Data . Description . Catalog . Publications . VO . ЮБ 2000 . 11:14:20.2 . ЮД 2000 . -57:33:04 . l . 290.172 . b . 2.895 . diameter . 14.0' . (m - M) 0 . 11.4 0.05 . distance . 1900 50 pc . E(B - V) . 0.08 0.01 . log(t) . 9.65 0.05 . (J, J-H) isochrone VOTable . 2MASS data VOTable . Developed by the Team . Send us your questions or feedback

Computer Ephemeris. Precession/nutation matrix. Explanations. Each row contains for the date specified at 0 h of Time Dynamical Terrestrial nine elements of equatorial precession/nutation matrix minus unity matrix multiplied on 10 8 . This matrix is to be used for coordinate transformation of equatorial coordinates between mean equatror and equinox J2000.0 and real equator and equinox of date. ... This is the matrix for transformation from J2000.0 to date. ...