... ABOUT ST-ECF . ... Change the relative shifts in association file . ASNCOMBINE . Process and combine images in one or two NICMOS associations . ... Examine images in an association . ... Plot magnitude as function of subpixel position . ... Group images in associations . ... Makes flatfields corresponding to the output image of asncombine . ... Compute the pixel response function for an image created with asn combine . ...

... The first column gives the star identification number, followed by X, Y positions in mm. The zero point of these offsets is star number 1 which lies at 21:24:20.52 +36:30:25.6 (equator and equinox 2000). Next are relative proper motions (muX and muY) and their errors (ex and ey) in 10**4 arcsec/yr, followed by calculated V magnitudes. The final column gives the calculated membership probabilities in percent. ...

... Appendix: Effect of errors in the encoder roller and drive disk on tracking. ... Servo error. ... Table 1: Tracking error budget Component Component error (nm RMS ) Effect (mas RMS ) Az axis wobble Drive disk high freq. error 200 17.17 Guide roller error 50 8.58 Lower bearing high freq./nonrep. error 50 4.29 Alt axis wobble Bearing high freq./nonrep. error 50 4.86 Az encoding error Drive disk high freq error 200 4.59 Encoder capstan error 50 5.73 Encoder ...

Geomagnetic disturbances can be monitored by ground-based magnetic observatories recording the three magnetic field components. The global Kp index is obtained as the mean value of the disturbance levels in the two horizontal field components, observed at 13 selected, subauroral stations . ... Geomagnetic activity is the occurrence of K variations. ... But K still remains a local index, describing disturbances in the vicinity of each observatory. ...

... follows . Abundances are referred to as (i) = relative abundance of species X by number, (ii) = log of above, (iii) , representing log abundance relative to solar and (iv) , representing the same scaled to allow for the difference between the stellar and solar iron abundance... unchanged . This is actually the description of chaotic behaviour in a mechanical system. Simon Jeffery . 2002-01-25

... Educational programs (English) . ... Additional training . ... Samara State Aerospace University Education Educational programs (English) Mathematical Modeling and Informational Technologies in Photonics . Degree awarded (diploma or credits): Master of Science in Photonics. ... The Master s program is focused on the project-oriented activity (Applied Master s program the Program). ... Areas of the professional activity for graduates with the Master s Degree include: . ... Professional skills: . ...

... Content Model: %Body.Content . ... Note that the ID, LANG and CLASS attributes can be used with virtually all of the elements permitted in the document body. ... CLASS . ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ...

The Mars Flag has a different design on the reverse side. obverse side of flag . ... The orbit lines on the obverse cross the Sun on the lower half of the flag and appear to go behind the Sun on the upper half of the flag. The reverse side has the orbits lines continuing around the Sun on the upper half of the flag. ... The Mars Flag reverse side is a continuation of the obverse side and not just a different design on the back and not a mirror image of the obverse. Main Flag Background Color . ...

... 38.4, THAT GIVES FOR 68 MONTHS (2014, SEPTEMBER) DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*sep. ... 15.5 ---------------------------------------------------------------------- Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 30.03 - 05.04.2015, Forecast on 06 - 13.04.2015, Carrington Rotation 2162 (27,93.03.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE AVERAGE LEVEL ALL DAYS EXCEPT APRIL, 3 WHEN LEVEL FELL TO THE LOW. ...

... Archives . ... If you do not mind the time predictor, it is hard to believe that this is a light curve, time dependent data. ... It?s hard to say this data set is designed for time series analysis apart from the complication in statistical inference due to measurement errors. How to design the statistical study with measurement errors, huge gaps in time, and unequal time intervals is complex and unexplored. ... The following is R output without measurement errors. ... Chandra Blog . ...

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. ...

... 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. ...

... SAO RAS . ... In 2016, a leading center of the Russian ground-based observational astronomy, Special Astrophysical Observatory of the Russian Academy of Sciences, is celebrating its 50th anniversary. The Observatory organizes an international conference "Multi-spin galaxies 2016", as a part of the festivities. ... Afanasiev Victor (SAO RAS, Russia) . ... Mapelli Michela (INAF - Padova, Italy) . Moiseev Alexei (SAO RAS, Russia) - chair . ... Karachentsev Igor (SAO RAS, Russia) . ... Russia), . ...

Contents. planet: 5 - Jupiter satellites: J1 - Io : 10, J3 - Ganymede : 15, J4 - Callisto : 6 total number: 31 type: relative dates: 1997-1997 observatory: see observatories list in the relevant article. ... Emelianov N. V., Vashkovjak S. N. (2009) Astrometric results of the observations of the mutual occultations and eclipses of the Galilean satellites of Jupiter in 1997. ... Position angle A in degrees (topocentric for mutual occultation or heliocentric for mutual eclipse) 10. ...

... 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 , . ...

... The data for ~ 5500 F-G stars are used to study their kinematics, metal abundance and HR diagram in terms of uvby photometry. The age - metallicity, velocity - metallicity, and age - velocity relations are derived. ... 4) At a given metallicity the kinematics of F dwarfs is close to that of G giants and the kinematics of G dwarfs is close to that of K giants. ... 1) При [Fe/H] < 0 звезды данной металличности обнаруживают отчетливую точку поворота главной последовательности (ГП). ...

Following designations of elements/ parameters are used in AMPLE. ... mean anomaly . ... Node . ... Apart conventional orbital elements AMPLE gives possibility to calculate for each minor planet the following often used functions: . ... MOID . ... To calculate MOID user should order the name or the number of the major or minor planet through dialog. ... To calculate CT user should order the name or the number of the major or minor planet through dialog as it is proposed for MOID calculation. ...

Text of these problems is available also in other languages : . ... What can one see in the Moon's sky more often - the Sun or the Earth? ... There are about of 250 millions of stars in the elliptical galaxy M32 (a satellite of Andromeda galaxy). ... The masses of Capella's components. ... You are proposed to estimate the masses of Capella's components, using our observational data. ... A galaxy's mass. ... Estimate the mass of FGC 1908 and compare it to the mass of our galaxy. ...

Kepler Orrery IV . ... Credit Copyright: Ethan Kruse (University of Washington) Explanation: The exoplanet hunting Kepler mission's total for candidate and confirmed multiple planet systems stands at 1,705 worlds in orbit around 685 distant stars. Put all of those exoplanet orbits on the same scale and follow their relative orbital motions to get Kepler Orrery IV. ... The color code indicates a planet's estimated equilibrium surface temperature based on its orbit size and parent star . ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...