... I fixed the bugs that caused the map_point changes to fail tests. Then I removed the no longer needed dimensional variables from the p structure and got those changes to pass all the tests. ... I put the code under subversion control in a new branch called refactor. ... The code change which processes each drizzle kernel over an entire image rather than a line at a time now passes the unit tests and was checked in. ... I got the keywords argument changes done and got the tests to pass. ...

... 2005 December 19 . Thin Rings Around Polarized Saturn . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: How thin are the rings of Saturn? ... This thinness sometimes appears in dramatic fashion during an image taken nearly along the ring plane. The robot Cassini spacecraft now orbiting Saturn has now captured another shot that dramatically highlights the ring's thinness. ... If alone in space, the unlit part of Saturn would be much darker. ... About APOD | ...

The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

... Press Release Images . Individual Images . ... The right-hand image shows Hubble's close-up view of the galaxy's core, taken in December 1995 by the Wide Field and Planetary Camera 2. The bluish-purple clumps that form the ring are the clusters of infant stars. Two dark, wispy lanes of dust and a pair of blue spiral arms are just outside the star-forming ring. ... The gas is trapped inside the ring through the stars' gravitational attraction. ... Amazing Space | ...

... On the night of December 13, 1908, 100 years ago today, the 60-inch diameter reflecting telescope of Mount Wilson Observatory was first tested on the stars. ... A Halo Around the Moon . ... Cameras around the globe pointed skyward this week to capture the spectacular conjunction of a crescent Moon and bright planets Venus and Jupiter. ... On December 1, bright planets Venus and Jupiter gathered near the young crescent Moon, an inspiring celestial scene in early evening skies around the world. ...

... Aurora from Space . ... Magnetic Storms . ... The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... Why no aurora at the magnetic poles? ...

. SoHO ( So lar and H eliospheric O bservatory) was launched in December 1995 in an orbit around the first Lagrange point. This is a point directly between the Earth and the Sun where the gravitation forces balance such that SoHO always stays between them. This point is about 1% of the distance to the Sun, about 1,000,000 miles, four times further away than the Moon. The SoHO orbit at the L1 point. Trace ( T ransition R egion A nd C oronal E xploror) was launched in April 1998 on a Pegasus XL rocket.

... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...

... It is notoriously difficult to identify weak cosmic ray events in long exposure observations. ... The method is to compare the probability distribution function (PDF) of cosmic ray events between an observation and a dark frame matched in exposure time. We illustrate the basic idea using dark exposures from a Tek 1024 1024 CCD with varying exposure lengths and read-out times. ... Figure: Histogram of cosmic ray events in a two hour dark frame. ... Original PostScript figure (78 kB) . ...

... You are here: start €Ё lbaops €Ё telecon2013dec03 . ... VLBI Schedule . LBA Home Page . ... Observer's Wiki . ... Chair: Tasso Tzioumis . Attendance: Cormac Reynolds, Hayley Bignall (Curtin); Tasso Tzioumis, Chris Phillips, Phil Edwards, Ioannis Gonidakis, Jamie Stevens (CASS); Shinji Horiuchi (ATDSCC); Jamie McCallum, Brett Reid (UTas); Oleg Titov(GA) . ... Need ATNF disk space (Chris,Tasso, Shaun) Continuing . ... Monitoring тАЬcheck-listтАЭ for ATNF telescopes (Chris, Jamie S) Continuing . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Monthly Sky Notes . ... This month Jupiter the largest of all planets, remains visible in the sky after sunset, not setting until after 11pm.€а On the evening of 12and 13 December the bright star-like object close to the Moon will be this gas giant planet. ... Rising this month is the great winter constellation of Orion the Hunter who will remain in our night sky through until March. ... Tweets that mention Wonders of the December Sky | ...

... These reports are submitted for engineering work accomplished during bright time and maintenance shutdowns. ... 010531: May 2001 Bright Time Engineering Work Summary . ... 020102: January 2002 Bright Time Engineering Work Summary . 020202: February 2002 Bright Time Engineering Work Summary . ... 030101: January 2003 Bright Time Engineering Work Summary . ... 040101: January 2004 Bright Time Engineering Work Summary . ... 050101: January 2005 Bright Time Engineering Work Summary . ...

... Initially, there are a number of contract requirement tests, which will provide an initial set of required tests: . ... Transmitter running into dummy load on the platform . ... Test signal at 2380 MHz . ... Transmit a signal (tone or spectrum?) and watch leakage into the receiver. ... This test should really be run with different sampling systems: The hardware decoder , the Radar Interface running into a tape recorder, and the Mk IV Pulsar timing machine, used as a fast sampling system. ...

. December 10,1998 - Laminar flow units were integrated to the clean tent at IKI test area. November 15,1998 - Integration of the Clean tent at IKI test area is finished. September 25,1998 - the clean tent laminar flow units (fLeicester University, UK) are put at IKI test room. August 28,1998 - the clean tent supporting structure is assembled . August 6, 1998 - integration of the bottom level of the clean tent supporting structure . Last updated Nov. 16, 1998 by V.Arefiev, gita@hea.iki.rssi.ru .

... What a beautiful picture of a field of stars from the European Southern Observatory! ... A patch of sky so filled with stars that hardly any dark spots are seen across the entire picture. However in the centre, next to an especially bright, blue star cluster, you can see a strange dark cloud. ... We call clouds like this one Bok globules'. ... Bok globules are the remains of much larger clouds, known as 'molecular clouds'. ... What do you see in this dark patch? We see a lizard. ...

... This is particularly true for columns at low energy, because of charge transfer efficiency variations from one column to the next. ... To avoid wrongly detecting columns as bad (either dark or bright), the observed dispersion in the distribution is used to compute the significance of an excess assuming a Gaussian distribution. ... The cost of this security is to detect less easily groups of bad columns/rows, because the observed dispersion is large even when the tested column/row is discounted. ...

Astronomy Discussion Forums . Forums: . ... Discussion Forums | ... Post . ... Test Followup . Forum List | ... Post Message | ... Posted by John Huggins on December 21, 2002 16:14:35 UTC . Just checking to see if followup messages still work. ... Login to Post . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

TESTING . LV Energia assembling . ... In December 1982, in the assembly test building, the first "LV-test rocket package" was assembled and subjected to dynamic tests and fit checks using the Ukrainian ground support equipment. In a period from March to October 1985, the core stage undergone "cold" bench tests on the versatile complex "Stand-Start" to verify the fueling technology including supercooled liquid hydrogen fill in. ... LV Energia . ... Official WEB-site of S.P.Korolev RSC Energia . ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Jupiter brightens the December sky . ... The largest planet in the solar system, Jupiter, reaches maximum brightness the night of December 2. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email...

... click image to view discuss) . ... Submitted by Mario Motta M.D. on 02/14/2007 21:00:35 . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...