Next: Simulations Up: Period Determination Previous: False Alarms and . The term ``spectral window'' is used to describe the response of the data analysis system to a perfect sine wave. If one observes a non-variable object with finite signal--to--noise each night at exactly the same time (equivalently an object with a one day period), the periodogram analysis on it will return a power spectrum that is peaked at 1 day. ... Figure 1 shows a typical analysis, including the window function. ...

... Alfa_ang is a GUI for the rotang routine. The purpose of this routine is to calculate the optimum rotation angle for ALFA given the RA and Dec of a source and the date and time of the observation. The routine also returns the azimuth and zenith angle of the telescope at the requested time, thus it can be used to find the correct rotation angle and azimuth for the Fixed Azimuth Drift Scan observing mode used by the AGES drift precursor observation. ... To run alfa_ang at Arecibo: . ...

... The result of this introduced windows of Long Term Planning (LTP) Science observations ( tasks to be scheduled) TA window constraints Spike - Sorts observations primarily by filling earliest bins first based on time priorities LTP Planner (MP Team member) - reviews unschedulable tasks tries to fit it in - review hemisphere campaign [cite berman] LTP Schedule (a schedule with four, 7-day bins of observations ) Short Term 1 Scheduling Process Flow Diagram II. ...

... Many astronomical observations, including spectra and time series, consist of irregularly sampled data series, the analysis of which is more complicated than that of regularly spaced data sets. ... This contribution surveys the methods used in astronomy for the interpolation of irregularly sampled one-dimensional data series. ... This method (Scargle 1989) is applicable to data with arbitrary sampling. ... This method is applicable to a regularly sampled data series with missing data. ...

... The effect of a certain sampling pattern in the frequency analysis is particularly transparent for the power spectrum. ... For and we obtain the result . ... Therefore, if interference between frequencies is small, the power spectrum reduces to the sum of the window functions shifted in frequency: . In the opposite case of strong interference, ghost patterns may arise in the power spectrum due to interference of window function patterns belonging to positive as well as negative frequencies. ...

... XMM-Newton SOC Home Page Conferences & Meetings . ... Data Analysis SAS News What is SAS? How to use SAS SAS Workshops SAS Version Changes Download and Install SAS Science Simulator (SciSim) . ... EPIC cameras optical loading . ... The PI is invited to cross-check the expected X-ray flux from the target source (and from any other potentially bright source in the target field of view), or to provide the SOC with her/his own estimate, if not originally specified in the proposal. ...

... PPTA timeline . ... List of projects . ... However, our time series are not equally sampled, so classical spectrum analysis cannot be applied immediately. ... Normally when analysing time series with very steep spectra one would use a "prewhitening" technique and perhaps a low sidelobe spectral window (e.g. the Hanning window). ... The idea is to separate the steep and flatter spectrum components so they can be analysed separately. ... The upper panel has raw data, interpolated data and red...

Taking into account the result by Watanabe P=2.5 days in outburst, I reconstruct old set of photographic observations being partly lost, and add some new observations. ... The periodogram calculated with the method by Lafler and Kinman is shown. ... The last periodogram indicates peaks corresponding following possible periods with the double-wave light curve: 0.4236, 0.4650, 0.5379, 0.6064, 0.7365, 0.871, 1.168, 1.5437, 2.8173, and 6.89 days. ...

... A growing collection of images showing progress with the Telescopes and Telescope Domes restoration project is available on the Armagh Observatory web-site (see star.arm.ac.uk/history/Domes/ ). The project has been progressed satisfactorily and close to its original budget. ... The outer copper skin of the dome has been replaced with new pre-patinated copper sheeting. ... The Sinden Optical Company has made considerable progress with the restoration of the 1835 Grubb 15-inch reflector. ...

Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

Загрузить программу (~10 MB). ... Программа izmccd предназначена для высокоточной астрометрической обработки числовых изображений небесных объектов. Программа позволяет получать как измеренные, так и экваториальные координаты малых планет, комет, спутников больших планет, визуально-двойных звезд и других объектов, а также идентифицировать уже известные малые планеты и найти на числовых изображениях движущиеся объекты. ... Программа является бесплатной. ... Автоматическая обработка, один объект. ...

... Chandra | ESO | ... Field selection . ... Color composite image of the Chandra Deep Field South of 940 ks (pixel size = 0.984 arcsec, smoothed with a s =1 arcsec Gaussian). ... The Chandra Deep Field South (CDF-S) is one of the deepest observations obtained with the X-ray Chandra satellite, which stared at the same path of the sky for 11 days. ... ESO press release on March 13 , 2001 . ... APOD : The Chandra Deep Field South has been the Astronomical Picture of the Day on March 28, 2001 . ...

Adding a few refinements to the DISCals script makes a script worth adapting for your own uses. ... The exposure times and # of iterations are short so the demo runs quickly. def __init__(self, sr): Display the exposure status panel. # if True, run in debug-only mode (which doesn't DO anything, it just pretends) sr.debug = False expStatusWdg = ExposeStatusWdg( master = sr.master, instName = DIS , ) expStatusWdg.grid(row=0, column=0) # get the exposure model self.expModel = ...

... Астронет | ... The second congress of the astronomical society of the former soviet union . ... Modelling the atmospheres of accretion disks . ... The distribution of old neutron stars in the galaxy . ... Compton scattering in a strong magnetic field: Resonances in the cross sections . ... Preface: "Physics of Neutron Stars" . ... Electric fields of neutron stars . ... Magnetic field decay in neutron star cores . ... The non-thermal mode of disc accretion onto the magnetosphere of a neutron star . ...

SAI, graduates year 1982. ... Note: when just a 7-digit phone number is shown, it refers to a phone located in Moscow (international access 007-495). "+" in front of a number means that you must dial an international access code first (or just press "+" on your mobile phone keypad). ... 939-1672(work); . ... Ataev Sasha . 1-(703)-536-8881(home) (USA); . ... Bychkov Sergey . ... 1-(410)-740-8205(home), +1-(301)-286-2150(work) (USA); . ... 1-(412)-767-0332(home), +1-(412)-608-9339(mobile) (USA); . ...

The software package ERA (Ephemerides for Research in Astronomy) is a problem-oriented software system for solving heterogeneous calculating tasks of Ephemeris and Dynamical Astronomy. The package makes it possible to produce ephemeris calculations needed for both planning various observational programs and processing the resulting observations. ... The system includes packages of processing the position observations by both the Least Squares Method and by Kalman filtering. ...

... About StarCalc . News . ... StarCalc Home Page . Short description of changes, implemented in the StarCalc, . ... CHANGES OF PROGRAM CORE FUNCTIONS. CHANGES OF PROGRAM INTERFACE. CHANGES OF OBJECT INTERFACES. ... New "Output console". ... Information, which is generated by StarCalc, is added into the console - for example, ephemeris tables. ... In the StarCalc state file can be saved autorotation parameters, object selection, object locking mode, auto start and stop autorotation mode. ...

... Цвет: синий . Коллекция: Весна-лето 2016 . Материал верха: искусственная замша, искусственный нубук, текстиль . ... Материал подошвы: резина . ... Размер US: 39 . ... Кроссовки ASICS TIGER. ... Материал: искусственная замша, искусственный нубук, текстиль. Сезон: Весна-лето 2016. ... Коллекция: Осень-зима 2015/2016 . ... Пуховик adidas Originals. ... Сезон: Осень-зима 2015/2016. ... Линейка: Originals . ... Игровой набор выполнен в ярких, привлекающих внимание ребенка цветах. ...

... 13, Moscow 119992, Russian Federation, e-mail: busarev@sai.msu.ru; 2 Research Institute Crimean Astrophysical Observatory, p/o Nauchnyi, Crimea 334413, Ukraine, e-mail: prok@crao.crimea.ua Summary: We propose a combined method of astronomical investigations of small or distant planets incorporating registration of a set of integral spectra of an object and their frequency analysis. ... An application of the method is shown on example of asteroid 21 Lutetia. ... 6] Busarev V. V. (2002), Solar Sys. ...

Next: Morlet transform of Up: No Title Previous: Inverse transform . ... Figure 16: Real (solid line) and imaginary (dashed line) parts of the Morlet wavelet for . ... Clearly, the wavelet transform will have a real and an imaginary part, and it is useful to represent them in `polar' coordinates: the norm is the magnitude of the transform and, being related to the local energy, is of primary interest, while the polar angle (phase) completes the representation. ...