Astronomy Picture of the Day . A Blue Moon Halo over Antarctica . ... 10.08.2015 . ... Credit Copyright: LI Hang Explanation: Have you ever seen a halo around the Moon? Such 22 degree rings around the Moon -- caused by ice crystals falling in the Earth's atmosphere -- are somewhat rare. ... What is featured above might therefore be considered doubly rare -- a halo surrounding a blue moon. ... August 2015 . ... Publications with keywords: Moon - halo . Publications with words: Moon - halo . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2015 August 11 . A Blue Moon Halo over Antarctica . ... Explanation: Have you ever seen a halo around the Moon? ... What is featured above might therefore be considered doubly rare -- a halo surrounding a blue moon . The featured image was taken late last month near Zhongshan Station in Antarctica. ... About APOD | ...

... Though Flint knows the interface definitions (i.e. number, type and intent of each argument) of standard FORTRAN functions, it is desirable for users to build and use a file (or files) describing the interfaces to their own library. ... The format is: flint -o file .. ... While these interface definitions could be input along with normal source files, preceding the interface file with the -l (library) switch has the advantage that the source of this file does not appear in the listing file. ...

Next: Sky background definition Up: Background Definition Previous: Smoothing spline interpolation . The command BACKGROUND/SMOOTH enables to define the background without previous order definition. This feature is useful for example to correct for the background the image required for the order definition. ... All above methods are implemented in command BACKGROUND/ECHELLE and selected by the echelle keyword BKGMTD . ...

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Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... Atmosphere Class Reference . ... More... #include < Atmosphere.hpp > . voidљ . computeColor (double JD, Vec3d _sunPos, Vec3d moonPos, float moonPhase, StelCore *core, float eclipseFac, float latitude=45.f, float altitude=200.f, float temperature=15.f, float relativeHumidity=40.f) . ... Get fade in/out duration in seconds. ... getFlagShow () const . ... getFadeIntensity (void) const . ... Definition at line 40 of file Atmosphere.hpp . ...

... HST . ... Data . ... HST Overview . Overview . ... Phase I Proposing . ... Retrieving HST Data . ... Instruments . ... DrizzlePac . ... Phase I . ... WFC Distortion . ... ACS Instrument Handbook . ACS Data Handbook . ACS Instrument Science Reports . ... Introduction to the HST Data Handbooks . ... Listed below are various detector artifacts and anomalies that ACS users might see in their data. See also the more detailed HLA report, ACS CCD Image Anomalies in the Hubble Legacy Archive . ...

... user-defined data file formats . ... better integration with a user's analysis routines To add such functionality to SAOimage, we developed the XPA Messaging System that allows X programs to define points of public access through which data and commands can be exchanged with external programs. ... We have utilized XPA to develop "SAOimage: The Next Generation" (SAOtng), an extensible image display service that can cooperate with other processes and programs. ... SAOtng help pages . ...

... These so called Out-of-Time (OoT) events gets a wrong RAWY value assigned, and thus eventually a wrong energy correction. ... generate an image from the OoT event list evselect table=PiiiiiijjkkPNblllOOEVLInmmm.FIT imagebinning=binSize imageset=PN_OoT_image.fits withimageset=yes \ xcolumn=X ycolumn=Y ximagebinsize=80 yimagebinsize=80 . ... change the name of the COUNTS column in the OoT event spectrum to CTS_OOT . ... copy the CTS_OOT column of the OoT event spectrum into the source spectrum . ...

... Bojan Nikolic web pages (r. 329) . ALMA . We present a framework for modelling atmospheric phase errors and their correction by both the fast-switching and water vapour radiometeric techniques. ... We use this framework to simulate relative point source sensitivity and effective resolution for a range of atmospheric conditions, with and without phase correction. ... Published as ALMA Memo #582. ... Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA Science . ...

... identify a realistic size of an event on the wavelet map; for example, a rectangular box one-duration wide and allowing for limited ratio of durations in height, has been used. identify all local maxima by placing a box around them and verifying that no larger values occur within the box. within each box, normalize the values of the map by the local maximum. threshold what is left to show the vicinity of each maximum. ... Figure 25: Local maxima of g2-energy map. ...

... Re-implement the Raw2Raw, using the same OCA rules of point 1 and making use of real and virtual products 3. ... Virtual products Point 2 requires to create the virtual products in the DB: a virtual product is a pipeline product that would be generated if the pipeline was run with a given set of input files, e.g. a master bias or a master flat. ... It will then look into the provenance table for the raw files that went into that product and repeat the OCA evaluation until no raw files are found. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... stars . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do neutron stars generate steady magnetic fields? ... How can a neutron star exist if those neutrons are just going to pieces? Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

... Unlike clients such as Shout and IceDJ this permits the broadcast of live audio, rather than prerecorded mp3's. LiveIce was developed after the appearance of IceCast to provide the Real Time streaming functionality which makes it a viable solution for broadcasting. It is based on the guts of 2 of my previous works - Mp3Serv, the first mp3 broadcasting system & Mp3Mixer, a toy which allows the user to 'Mix' with mp3 streams. ... LiveIce XMMS sourcecode is available here . ...

... The Scientist's Expert Assistant (SEA) is a prototype effort for the Next Generation Space Telescope that uses a combination of artificial intelligence and user interface techniques to explore ways to substantially reduce the time and effort involved in proposal preparation for both scientists and the telescope operations staff. ... At the time, SEA supported only a single observation, had the basics of a graphical exposure calculator and a visual target tuner, and had a very limited expert system. ...

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