... A Starry Night of Iceland . ... Credit Copyright: Stephane Vetter ( Nuits sacrees ); Rollover Annotation: Judy Schmidt Explanation: On some nights, the sky is the best show in town. ... The featured winning image was taken in 2011 over Jфkulsюrlяn , the largest glacial lake in Iceland . ... A powerful coronal mass ejection from the Sun caused auroras to be seen as far south as Wisconsin , USA. ... Publications with keywords: aurora . Publications with words: aurora . ... Aurora over Clouds . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2016 January 3 . A Starry Night of Iceland . ... Explanation: On some nights, the sky is the best show in town. On this night, the sky was not only the best show in town, but a composite image of the sky won an international competition for landscape astrophotography. ... Follow APOD on: Facebook , Google Plus , or Twitter . ... About APOD | ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

MROI Science Combiner Downselect Workpackage Definition INT-407-PMG-nnnn rev 0.2 10 July 2006 John Young jsy1001@cam.ac.uk Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE, UK http://www.mrao.cam.ac.uk/ Magdalena New 801 Socorro, Ridge Observatory Mexico Tech Leroy Place NM 87801,USA http://www.mro.nmt.edu Objective To define the scope, deliverables, and milestones for the science beam combiner downselect work package. ... The work package ends once the downselect has been made. ...

Next: Combining Bias Frames Up: Preparing Your Calibration Previous: Input and Output . Except for summing the frames together, combining frames may require correcting for variations between the frames due to differing exposure times, sky background, extinctions, and positions. ... The input frames are combined by applying a sigma clipping algorithm at each pixel. ... The input frames are combined with a variant of the sigma clipping algorithm which works well with only a few frames. ...

... Meta Index / Home Page / Intermediate Output Files This image-file is produced by omdetect and the image shows the final background map it produced after running the source-detection algorithms. Intermediate background-image file produced by omdetect - eg I0123920101OMS493BCKIMAGE1000.FIT . For engineering-2 mode data, the four image segments are combined into a composite image by omcomb (fits file, eg I0135720601OMS01700E2I.FIT) which is then processed in the normal way. ...

... Astronomy from the Ground Up . ... Universe At Your Fingertips . Universe At Your Fingertips TOC . Universe At Your Fingertips Activities TOC . ... Resource Guides . ... Resources . ... ASTRONOMY BACKGROUND - SECTION 2 . ... Resources for Exploring the Moon . ... Resources for Exploring the Big Bang and the Expansion of the Universe . ... Resources for Exploring Astrology and Other Astronomical Pseudoscience . ... Resources for Exploring Skylore (the Astronomical Mythology of Many Cultures) . ...

... There are several explanations for these X--ray quiet PMS stars. To examine the explanations, it is proper to divide the PMS stars into three groups: those bluer than R - I = 0.7, those redder than the X--ray sources (R - I > 1.25) and those with colors similar to the X--ray sources. ... A total of 26 of the non--X--ray detected PMS candidates had spectra taken. ... Between V=14 and V=16, I find 25 stars which are X--ray sources and estimate 19 non--X--ray PMS stars. ...

CCD Performance . ... The dark current appears to have two components: one from electronic sources in the CCD, and a second component whose strength correlates with the cosmic ray flux. ... As of this writing, the " DARKTIME" keyword in the WFPC2 image headers does not reflect correctly the actual time during which the CCD collects dark current. ... External exposures of 180s or longer made with the serial clocks off (CLOCKS=NO; the default setting) suffer an additional 60s of darktime (restart=1). ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the 'asteroid' was found on March 30 to have a short tail! ... it was renamed periodic comet P/2004 CB (LINEAR). ... Back to Previous News . Siding Spring Survey Main Page . ... Follow-up Astrometry with the 1.0-m at SSO . Previous News Items . Anglo-Australian Near Earth Asteroid Survey 1990-96 . ...

... The core of the mountain experience is expressed in decision making; the holds to use, the routes you are capable of climbing, and the information you can trust. ... While every attempt is made to insure that the information provided here is correct and safe, it is never a substitute for your better judgement. ... By use of the provided information, the reader hereby releases the authors and providers of said information from liability for any injury, including death, that might result. ...

... Capability of space means for the solution of problems of military character . ... Classification and functions of space systems of military purpose(assignment) . ... Ground complex of maintenance of launch and control of space vehicles . ... Capability of space systems of optical reconnaissance . ... Complexes topographical and earthresource shooting on base of "Zenit" space vehicle . ... Space vehicle for optical-electronic reconnaissance . ... System with space vehicle on low-altitude orbits . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... There are numerous excellent online and web-based activities related to the HR diagram. ... Cluster Color-Magnitude Diagrams and the Age of Stars provides colour indices and magnitude data for the Pleiades and 47 Tuc, a globular cluster so that you can plot colour-magnitude diagrams and determine cluster ages. ...

E. V. Miletsky, V. G. Ivanov, Y. A. Nagovitsyn, Some properties of latitude-time evolution of local and background solar magnetic fields // Advances in Space Research, 2015, vol. 55, Issue 3, pp. ... PDF] . E. V.Miletsky, V. G.Ivanov, Amplitude-Time Relations at Different Latitudes in the 11-Year Cycle of Solar Activity // Geomagnetism and Aeronomy, 2015, vol. ... V. G. Ivanov, E. V. Miletsky, Width of Sunspot Generating Zone and Reconstruction of Butterfly Diagram // Solar Physics, 2011. vol. ...

Disastrous earthquakes happen 100 to 200 times a year. ... There is a chance that the data of ionospheric plasma observations hold an answer to the latter question. Satellites and ground-based facilities may detect earthquake precursors in the ionosphere a few hours or days before the main shock. ... ULF "Hz"-oscillations have been recorded several hours before the main shock in a narrow magnetic field tube (40...100 km along the satellite trajectory) conjugated with epicenter of the earthquake. ...

... Illya Ivanovich Zalyubovsky was born on June, 15, 1929 in Poltava Region. He entered the physical and mathematical faculty of the Kharkiv State (presently V. N. Karazin National University) in 1949. ... Since 1965 he is the head of the department of experimental nuclear physics, and since 1967 the Vise-rector for scientific work. ... Since I. I. Zalyubovsky headed the department of experimental nuclear physics, the range of his scientific interests has broadened sharply. ...

. Language [RU/EN] Search: . Home . UP . Research . Projects . Services . Info . News . Events . Personal . Archive . WebMail . N.V. Pushkov . 09/04/2016 22:37 MSK . webmaster@izmiran.ru . Magnetism . ИЗМИРАН . Ionosphere . COSPAR 2016 . Istanbul, Turkey . Jul 30 - Aug 07 2016 . Solar-Terrestrial Physics . Forecasts . Solar Activity . Geomagnetic Activity . ICC . IZMIRAN-75 . 11.12.14 Exibition. 75-th anniv. of IZMIRAN . Information . News . 25.05.2015 FSR-2015 . Events . Ads . (C) 2007, IZMIRAN

Next: The STScI NICMOS Calibration Up: No Title Previous: CONICA: The high resolution . The STScI NICMOS Calibration Pipeline . Introduction . ... Dark Current Subtraction . ... Input Data . ... Scalar Background Subtraction . 2-D Background Subtraction . ... Status and Goals of the NICMOS Calibration Plan . ... Photometry . ... Photometric Performance of NICMOS . ... NICMOS Photometry. ... ST-ECF Grism Spectrum Software for NICMOS Grism Data . ... Analysis . ... STScI NICMOS Software . ...

. Subdwarfs . Metal deficient red giants in galactic field . Red horizontal branch stars . Blue horizontal branch stars . Extended horizontal branch stars . Stars inside globular clusters . W Vir type stars . IRAS-sources identified with peculiar supergiants . RCrB type stars . Sakurai's object . peculiar supergiant FG Sge .