... 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. ...

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• Conditions of the Test
• iPhone 2G testing
• Photometry with STIS

... 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 | ...

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• APOD: 2008 December 4 - Venus in the Moon
• APOD: 2015 December 11 - The Brightest Spot on Ceres
• APOD: 2008 December 6 - Lunar Diamond

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. ...

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... 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 | ...

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• Arcetri Star-Formation Group Publications
• APOD: December 18, 1999 - Irregular Galaxy Sextans A
• APOD: December 30, 1998 - Supernova 1994D and the Unexpected Universe

... 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. ...

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... 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? ...

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• The Brightest Moon

. 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.

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• Geminid Meteor Shower: 13 to 16 December 2008 | International Year of Astronomy
• Geminid Meteors
• Armagh Observatory

... 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 . ...

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• RadioAstron main page, english version

... 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) . ...

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... 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 . ...

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• VLBI Wiki | Main / Telecon2013Dec03
• Diffuse gas in and around the Milky Way - Programme
• Diffuse gas in and around the Milky Way

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 | ...

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• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• Russian Space Programme | Astronotes
• December Night Sky Wonders | Astronotes

... 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 . ...

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