... Tonight's Sky . ... The Magazine . ... Observing . ... 50 Weirdest Objects . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Beautiful objects from the Index Catalogue . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...
Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . ... Monthly Sky Notes . ... April . ... By admin March 16, 2015 Posted in: Armagh Planetarium . ... Stargazing the Night Sky is a short and very informal course is for complete beginners who want to know more about the wonders of the cosmos. ... If you want to experience the amazing objects we can all see at night, this is the course for you. ... Copyright Armagh Planetarium 2014 All Rights Reserved. ...
... Aurora - June 23, 2015 . Sunspot, Active Region AR2371, produced an M2 class flare and sent a coronal mass ejection toward the Earth on June 21st. ... A meteor trail, airplane and clouds are also in the image. 30-second image with dark slide, Samyang 14mm, f/2.8 lens imaged at f/5.6, Unmodified Canon T1i on a Tripod, No filter, ISO 800, processed with Adobe Photoshop. 00: 17 hrs EDT, 23 June 2015, Harvard, MA. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...
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... Home Education Classes AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . ... Classes . AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ April 2016 . ... Dec. ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ...
... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...
... NASA Main Page . NASA Organizations Index . ... Marshall Space Flight Center . ... Science @ NASA: news . ... Goddard Space Flight Center: Science missions . National Space Science Data Center . data from NASA space flight missions, . ... High Energy Astrophysics Science Research Center (HEASARC) - a source of gamma-ray, X-ray, extreme ultraviolet, other wavebands observations of cosmic (non-solar) sources. ... Kennedy Space Center - Publisher's Photo Corner - Photograph Index . ...
... This applet generates an observing list based on an observer's location and time. ... To use this program, enter in your location, and the local times at which you wish to begin and end observing. The date you enter should correspond to the calendar day at the time at which you begin observing. For example, if you wish to observe from 9:37 PM October 23, 2007 until 3:21 AM October 24, 2007, you would enter 21:37 for the starting time, 03:21 for the finish time, and 10/23/2007 for the date. ...
Neutron Monitors ] [ Solar Neutrons ] [ Muon Telescopes ] [ Base Potchefstroom University ] [ Magnetometers ] [ GPS systems ] [ Ionosphere ] [ Related Data ] [ Space Weather ] . ... All Cosmic Ray Stations + InterPlanetary Data: WorldNet . Alma-AtaB (Mt.Tien Shan) DataBase of Kazakhstan Spectrograph Alma-AtaB (Mt.Tien Shan) new . ... Nagoya Muon Telescope and DATA or mail . ... Belgrade Muon Telescopes and DATA or ">mail . ... Real-Time database for Cosmic Ray Anisotropy (DB10) . ...
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. F IGURE . 8. Relations between GC parameters and the horizontal-branch color index. The open circles correspond to the old halo, filled circles to the young halo (large filled circles correspond to clusters with (B-R)/(B+V+R)>0.32 ), and filled triangles to the corona. discussion in the text | privious figure | next figure .
... Satellite data ] . SMIS ] . The program is designed to process the specific AVHRR instrument data for calculation and analysis of temperature fields on the sea surface and upper level of clouds. It performs brightness correction for visible channels with regards to clouds altitude. ... The program features a wide variety of classification algorithms (including two-dimensional histogram analysis) and enables to construct personal procedures for classification. ... Back to SMIS Home Page . ...
... Seminar archive . ... Титарчук Л. X-ray spectral index correlations vs mass accretion rate in neutron star and black hole X-ray binaries in their different spectral states. ... vs mass accretion rate as in the case of NS as well in the BH case. In BHs the spectral index should increase and then saturate with mass accretion . ... BH case the index, indeed, correlates and then saturates with mass accretion . rate. Moreover this index-mass accretion rate correlation allows us to estimate . ...
Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...