... Science Users Information Future Facilities and Development E-ELT jump to navigation jump to content . ... Observing with ESO Telescopes . ... In December 2012 ESO Council fully approved the E-ELT Programme ( more , more , even more , still more ). ... In December 2014 ESO Council approved the construction of the E-ELT in two phases, and authorised spending on Phase 1 . ... 15 Jan 2012] Announcement of the E-ELT Workshop "Shaping E-ELT Science and Instrumentation" , 25 February 01 March 2013 . ...

... 2012 December 2 . The Gegenschein Over Chile . ... Explanation: Is the night sky darkest in the direction opposite the Sun? ... In fact, a rarely discernable faint glow known as the gegenschein (German for "counter glow") can be seen 180 degrees around from the Sun in an extremely dark sky. ... Here a deep exposure of an extremely dark sky over Paranal Observatory in Chile shows the gegenschein so clearly that even a surrounding glow is visible. ... About APOD | ...

... Jan-February: Very mild with only 5 days in the period . ... March 11: 71 degrees - ties record high . ... May 8-17: Icky weather: Highs never about 55 . ... Eugene Record 24 hr rainfall on May 29: 1.05 inches . Salem new record rainfall for month: 5.55 inches . Portland new record rainfall for month: 5.55 inches . ... 14 days with highs less than 60 for Eugene . ... Record Highs: July 26 = 102; July 27 = 105 . ... New Drought Record: 84 days: June 26 - Sept 15 . ...

Armagh Observatory reports that December was drier, sunnier and colder than average. ... The mean monthly temperature was 3.9 degrees Celsius (39.0 degrees Fahrenheit), which is about 0.8 degrees Celsius below average. The maximum temperature was 11.7 degrees C on the 20th and 21st, while the lowest air temperature was -4.3 C on 29th. ... The mean annual temperature at Armagh during 2008 was 9.78 degrees Celsius, making 2008 the coolest year since 2001. ...

Chaotic Synchronization in Ensembles of Coupled Maps . ... Moscow, 103907, Russia . IEEE Transactions on Circuits and Systems-I , 1997, vol. ... 918-926. Received December 18, 1996 . ... Synchronization modes are investigated in ensembles of interacting maps with chaos. For certain types of the map couplings, simple and rigorous conditions for chaotic synchronization are obtain, determined by only two parameters of order. ...

... HST . ... Data . ... HST Overview . ... Cycle 24 Announcement . ... Update on Charge Transfer Inefficiency of the STIS CCD . CCD Side 2 Read Noise . ... ISR 2001-005: STIS CCD Read Noise During Side-2 Operations . ... The frequency of the read noise pattern ranges from 15.5 to 18 kHz, which corresponds to a spatial frequency on the detector of approximately 3 pixels (horizontally, in the direction of serial clocking). ... A code is provided to analyze and filter the pattern noise in STIS CCD data. ...

... December 27, 1999 . Solar Moss . Credit: TRACE Project , NASA . ... The false-color TRACE image above was recorded in extreme ultraviolet light on October 18. It shows the solar moss associated with hot magnetic plasma loops arching above one of the Sun's active regions . ... Solar moss isn't found growing only on the Sun's north side, but as a rule seems to lie above the photosphere or visible surface, in the transition region of the solar atmosphere. ... About APOD > . ...

... Sun images . ... Sun flares . ... Active areas . December : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Coordinates and other characteristics of active regions are issued for December 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for December 09, 2015 00:31 UT . ...