... 29.11.2013 . ... Credit Copyright: NASA , SOHO Explanation: Sungrazing Comet ISON reached perihelion, its closest approach to the Sun, yesterday, November 28, at 18:45 UT. ... These two panels follow ISON before (right) and after its close approach, imaged by the LASCO instrument onboard the Sun staring SOHO spacecraft . ... November . ... November 2013 . ... Publications with keywords: sungrazer - perihelion . Publications with words: sungrazer - perihelion . ... Perihelion Approaches . ...

Galileo clear filter image of asteroid 951 Gaspra taken 10.5 minutes before closest approach. ... Galileo, 0107318.26) . ... Central Latitude/Longitude (deg): N/A . ... Instrument: Solid State Imaging CCD Camera . ... Instrument Field of View (deg): .46 x .46 . ... Illumination Incidence Angle (deg): N/A . Phase Angle (deg): N/A . ... NASA Image ID number: N/A . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ... Code 630, NASA Goddard Space Flight Center . ...

The Instrument · · · · · · Baffling Coa3ngs Assembly Moths Lab Tes3ng Commissioning NA2 Baffle · · The NA2 baffle will need to be modified The baffle will need to be opened up to allow the 10.8' diameter field through Instrument Baffles · There are three knife edged surfaces inside the instrument ­ Entrance port ­ Back of shuIer housing ­ Op3cal Tensioner Coa3ngs · Dewar ­ Main components Nickel plated ­ Stainless steel components either ...

... Parameters . Filters . ... Direct images . ... The SCORPIO-2 project: . Spectral Camera with Optical Reducer for Photometric and Interferometric Observations - 2 . The broad-band glass filters made in SAO RAS are used for the observation in the Johnson-Cousins (UBVRI) photometric system in the direct images mode. The glass filters transmission curves are shown by solid line. ... The filters transmission curves of the `comets' filters measured with the SCORPIO-2 in the F/4 beam. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... We have obtained imaging polarimetry of the comet C/2013 R1 (Lovejoy) with 2-Channel-Focal-Reducer Rozhen instrument at 2m RitcheyтАУChr tienтАУCoud telescope of the Bulgarian National Astronomical Observatory Rozhen in two dust continuum filters covering wavelength intervals clear from molecular emissions and centred at 4430 in blue filter and at 6840 in red filter. ...

... ESO, the European Southern Observatory . ... Travel and Contacts . ... ESO . ... VLT/Paranal . ... Survey Telescopes . ... 2013 . ... This image shows the most recent observations of 4-kilometre diameter comet 67P/Churyumov-Gerasimenko, taken on 5 October 2013 by ESO's Very Large Telescope (VLT) when the comet was around 500 million kilometres away тАФ before it passed behind the Sun and out of view from Earth's perspective. ... The path of comet 67P/Churyumov-Gerasimenko in October 2013 Credit: . ...

... The floor of Kandinsky is in permanent shadow and never receives direct sunlight, keeping it very cold. However, by using sunlight scattered off the crater's walls and the WAC broadband clear filter, MESSENGER's MDIS instrument was able to capture this image that reveals the details of the shadowed surface. ... The view on the right shows the same image but with the brightness and contrast stretched to show the details of the crater's shadowed floor. ...

DOK-S spectrometer is designed to measure the energetic spectrum and angular distribution of electrons in the energy range 20-180 keV and of ions in the range 20-1300 keV. In the main operational mode the range of measurements includes 8 energy channels. The instrument consists of two units: detector unit and electronics unit. ... Contact persons: K.Kudela - Institute of Experimental Physics, Slovak Acad. ... J.Simunek - Institute of Atmospheric Physics, Czech Acad. ... Prague, Czech Republic. ...

... Previous: A Posteriori Guidance for Astronomical Images . ... We present an original algorithm for the recognition of anomalous events in a CCD frame (i.e., cosmic hits, bad pixels etc.) The algorithm is able to distinguish between these events and real features by comparing the standard deviation and the kurtosis of a synthetic PSF, whose width is given by the user, and the corresponding values in a running window, whose size is chosen by the user, in the actual frame. ...

... Archives . ... I decide to discuss Kalman Filter a while ago for the slog after finding out that this popular methodology is rather underrepresented in astronomy. ... When I learned ?Kalman filter? for the first time, I was not sure how to distinguish it from ?Yule-Walker equation? (time series), ?Pade approximant, (unfortunately, the wiki page does not have its matrix form). ... Tags: Cressie , inference , Kalman filter , kriging , MADS , spatial statistics . ... Comment ( RSS ) | ... Chandra Blog ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Parkes | ATCA . ... Visiting Parkes radio telescope . ... With the addition of a focal reducer, this telescope becomes a very efficient instrument in the study of extended, low surface brightness objects. ...

... Solar System . ... Comets and Asteroids . ... Vision of Vesta: a dark feature with a diameter of approximately 100 kim near the asteroid's equator can be seen in this image from Dawn (Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA) . Between Mars and Jupiter lies the Asteroid Belt. ... The Dawn space probe is expected to go into orbit around Vesta on 16 July, from there it will return some detailed images and other data, staying at the asteroid for about a year before setting off to visit Ceres. ...

... Telescope . ... Filter wheel . 8 places for 50x50mm size, 5mm thick filters . Filter sets . ... If 2Kx2K CCD-camera Andor DW-436 is used, the field of view is 8'x8'. There is also a possibility to use fast 1Kx1K electron multiplying CCD-camera Andor iXon DU-888. In this case the FOV is 4'x4', and frame rate can be set to up to few hundreds Hz, when small part of CCD is used. ( more details .. High Energy Astrophysics Department 2016 IKI RAN ...

... In typical nightly use, the wide field and planetary telescope and cameras record images of favorably placed objects in the sky, including constellations, bright variable stars, nebulae through narrow-band filters, comets, the Moon, and planets. ... Shared Skies telescopes are available for use by students at the University of Louisville and the University of Southern Queensland, and by teachers and students in middle and high schools mentored by faculty at the universities. ...

M obile A stronomical Sy stem of TE lescope- R obots MASTER-II Kislovodsk Lomonosov Moscow State University, Sternberg Astronomical Institute , Moscow Union "Optic" , Kislovodsk Solar Station Latitude = 43 o љ44'.767љN; Longitude = 42 o љ31'.417љE; Altitude = 2067љm MASTERљIIљ(8љsquareљdegress) + MASTERљVWF(VeryљWideљFieldљCameras (FOV=800 square degrees, Timeљresolutionљupљtoљ150љms, with unfiltered m_lim=14m on 5 sec. exposure, and ~10.5m with 0.15 sec) . ... 11h 38m 38.0s , -09d 59m 59s) . ...

Comets as the Object of Investigation. ... Stratification of Comets Atmospheres and Their Chemical Structure. ... Formation and Change of Surface Dust Layer of Periodical Comets' Nucleas and Their Evolution in Solar Radiation Field. ... Dynamics of Matter in Near-Nuclear Region of Comet Atmosphere in Adiabatic Approximation. ... Kinetic Theory of Gas Stream in Region of Transition between Condition of Continuum to Free-Moleculte Stream. ... Free-Moleculte Stream of Neutral Gas in Comet Atmosphere. ...

... An estimate the rotation period of cometary nuclei is important for understanding and describing the physical processes of the cometary activity. Unfortunately, the measurements of the rotation periods of the comet nucleus depend on the model assumptions and it is one of the main reasons for the scatter of the estimates given in various articles for a given comet. ... Right: the image of the comet 29P/Schwassmann-Wachmann 1 obtained at the 6-m telescope. ...

Target: Venus . The Soviet VEGA Spacecraft Two remarkable "busloads" of automated spacecraft were launched toward Venus by the Soviet Union in December of 1984. Each one contains three separate modules: one lander and one balloon-carried atmosphere probe to be dropped off at Venus in June, 1985, and one major package of instruments which will continue on to encounter Halley's Comet in March, 1986. ... Venus and Earth: A Comparison . Earth . ... in Earth days) . ... 243 Earth days . ...

. unfiltered . PC 1 - average . PC 2+3 - annual . PC 2 . PC 3 . PC 4 - secular . PC 5 . PC 6 . Sum of nine first PC's 1-10 . Difference between the initial signal and ten first PC 1-10 .