Python Reference Introduction These notes contain commands useful for analysing and plotting data using the Python programming language, together with the Numpy and Matplotlib libraries. ... So for example, the plot command (from matplotlib) would be executed by typing pylab.plot(.. ... Pulling out part of an array. ... To pick out only the chosen elements, and put them in a new array, use something like: new_array = my_array[index_array] Plotting We use Matplotlib (included in pylab) to plot. ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Community . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... elements . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . ... Meade Series 5000 HD-60 18mm 6-Element Eyepiece (1.25") . ... Meade Series 5000 18mm HD-60 6-Element Eyepiece, #07734 (1.25"). The latest advancement in the Meade Series 5000 eyepiece series offers a large 60 apparent field of view and a flat field of view which is tack sharp right to the edge. ... Meade Series 5000 Pl ssl Eyepieces offer a very wide field-of-view, with pinpoint edge of field sharpness and contrast. ...

This Directory contains mean hour values of geomagnetic field components at observatories in Russia and other repub- lic of Former Soviet Union (FSU). The List of these observatories has indication of Data Years. ... Files are prepared in the DOS format. The Format for mean values follows after this list of the geomagnetic observatories. ... 21-116 24I4 24 4-digit hourly mean values for the day. ... If any of the hourly mean values for the day are missing 9999 will appear as the daily mean. ...

... For certain blo ck diagram (var. 1) and time of working cycle ( = 1 hour) find reliability function P (S ) and operating time to failure Tf (S ). ... Write answers on following questions: · May operating time to failure for system is increased twice by changing failure rate for element number 1? ... Change trim effect mechanism such, that 5 = 0, 2 · 10-6 1/h, then S = 3, 15 · 10-6 1/h, and operating time to failure for yaw control system Tf = 0, 32 · 106 h, reliability criterion is executed. ...

... Field size . Object name . ... Map size . ... Field size: the approximate size of the map in the Y direction. ... Galaxies: . ... Galaxies, which size exceeds some value depending on the field and map sizes, are displayed with their real positional angles and sizes by 25m isophote. ... In the "tools" fields there are links to the several famous AVO (Astrophysical Virtual Observatory) resources: NED and Simbad databases and DSS2 (Palomar Digitized Sky Survey) images of the corresponding sky area. ...

... Information about a variety of different calendars for different cultures (e.g., Christian, Jewish, Muslim, Chinese, Hindu etc.) ... In addition, the Chinese had two different ways of interpreting and observing celestial events. One way the Chinese used astronomy was known as lifa; it was a discipline that aimed to understand the regularities and the predictable events in the celestial system through careful, observations, measurements and records. ... back to Teachers' Newsletter Main Page ...

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. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Space Flight . ... Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a hot, dense soup of quarks and gluons. ... In the very last few kilometres some of the light was scattered by a myriad of water droplets (containing hydrogen nuclei which had existed almost since the Big Bang) slowly descending through the air following a rainshower. ...

... Catalog . ... This web application is brought to you by the following people (in alphabetical order): . Alexey Sergeev, markup issues . Artemy Tregoubenko , JavaScript code . Elena Glushkova, content management . ... We would like to acknowledge the usage of these open source technologies: . Django , web framework . PostgreSQL , database management system . ... SAMP-Webtools , set of JavaScript tools for SAMP-enabled web applications . Developed by the Team . ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

MATSYM - symbolic matrix processor . ... To use the program you will need a MAT file (liked CIR file: "User manual for CIRSYM program") of your system. ... In first string of MAT file enter any text you want to be the title of your system. ... Starting from string 2 (if is not comments - "*") enter the system element name, incident row and column and, optionally, its value. ... To generate a solution, run MATSYM.exe and enter "system_file_name.CIR" or click on the "ENTER" (in "MAT" case). ...

... Oleg V. Verkhodanov . ... The last few years have changed our view on the evolution of galaxies: the most distant galaxies (i.e. systems having stellar population) have been found at redshift z=6.68 (Chen H.-W., Lanzetta, K. M., Pascarelle, S. 1999, Nature, 398 , 586) and radio galaxy at z=5.19 (van Breugel W., De Breuck C., Stanford S. A., Stern D., Rottgering H., Miley G. 1999. astro-ph/9904272 ). ... Redshifts and age of stellar systems of distant radio galaxies from multicolour photometry data. ...

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. ...

... Made with Swarovski Elements - известный бренд, специализирующийся на производстве одежды и аксессуаров, украшенных кристаллами Swarovski. ... В нашей акции представлена богатая коллекция кожаных женских сумок, инкрустированных кристаллами.Артикул: 00_92_BLUE_JEANЦвет: синийСостав: 100% натуральная кожаОсобенности: кожаная сумка с двумя ручками на молнии, украшенная кристаллами Swarovski. ... Тип: Сумка . ... Сумки . ... Тип гриля: Электрический . ... Полезный объем духового шкафа: 66 . ...

... Bad Astronomy . ... Every few months, one of a series of questions comes up on the USENET group sci.astro involving tides, or the rotation of the Moon, or the recession of the Moon from the Earth. ... Why the Moon's rotation period is the same as the length of time it takes to orbit the Earth (same as number 1, but phrased differently). ... But when this happens, the time it takes for the Earth to rotate once will be slowed to exactly the same time it takes for the Moon to go around the Earth once! ...

... 237S (SIMBAD/NED BibCode) ================================================================================ Keywords: Sun: UV radiation - atmospheric effects - Sun: atmosphere - lines: identification Description: An ultraviolet atlas of the solar spectrum with a spectral resolution of 15mA in the region 1948-2000A is presented. ... The wavelength atlas with a list of about 550 lines has been synthesized from data at center of the Sun ({mu}=1) and at {mu}=0.89, smoothed out over an area of 30 arcsec. ...

SAI VO . ... SAI CAS . ... Web Services . Catalog Access Services . ... SAI VO Wiki . ... Program Access . SAI CAS Wiki . SAI Web Services . ... DSS Mirror . ... We provide an implementation of IVOA standard Simple Image Access Protocol interface to our DSS mirror. Service metadata is available here . Currently, we provide the atlas service only, which returns the list of original DSS images intersecting the requested sky area. ... SAI MSU | ...

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...