Daily Archives: September 7, 2013

Sun online. Solar activity. 07 September 2013

According to data of Royal Observatory of Belgium:
Solar activity has been eruptive during the past 24 hours, featuring a C1.0 flare from returning NOAA AR 11831 near the East limb, peaking at 22:50 UT on September 6. There is a chance for more C flares within the next 48 hours.The solar wind decreased from 420 to 360 km/s in the past 24 hours. In the same period, the Interplanetary Magnetic Field was low with values between 4 and 5 nT. The geomagnetic activity was at quiet levels (K Dourbes between 0 and 3; NOAA Kp between 1 and 2) during the past 24 hours. Quiet geomagnetic conditions (K Dourbes < 4) are expected for September 7 to 9.

Local time:9/7/2013 at 14:37:15 Local time:9/7/2013 at 14:37:15 Local time:9/7/2013 at 14:37:15 Local time:9/7/2013 at 14:37:15

Equipment: Coronado 90 + SBIG 8300s + LX75
Editor: Photoshop
Date: 07/09/13
Time GMT: 19:30:00
Exposure 0.09 sec.

With SPONLI Space is getting closer!

Night in the Andes Ice Forest


Image Credit & Copyright:
Babak Tafreshi (TWAN)
Explanation: This forest of snow and ice penitentes reflects moonlight shining across the Chajnantor plateau. The region lies in the Chilean Andes at an altitude of 5,000 meters, not far from one of planet Earth’s major astronomical observatories, the Atacama Large Millimeter/submillimeter Array. Up to several meters high, the flattened, sharp-edged shapes, and orientation of the penitentes tend to minimize their shadows at local noon. In the dry, cold, thin atmosphere, sublimation driven by sunlight is important for their formation. A direct transition from a solid to a gaseous state, sublimation shapes other solar system terrains too, like icy surfaces of comets and the polar caps of Mars. Above the dreamlike landscape stretches the southern night sky. Their own forms rooted in myth, look for the constellations Pegasus, Andromeda, and Perseus near the panorama’s left edge. Bright and colorful stars of Orion the Hunter are near center, with the Large Magellanic Cloud and the South Celestial Pole on the far right.