Daily Archives: September 10, 2014

The Sun Online and solar activity. September 10, 2014

There are currently 9 sunspot groups visible. Only 2 low-level C-class flares were observed over the last 24 hours, both having NOAA 2157 as their source. This active region still has a delta in its main trailing spot. NOAA 2158 seems to have lost its delta structure, and has not produced any flares. The other sunspot groups are quiet. Two active regions are approaching the east limb. The greater than 10 MeV proton flux is still slightly enhanced and is currently at 1 pfu. It continues its slow decline.
C-class flares are expected, with a chance on another M-class event. Solar wind speed was mostly between 350 and 400 km/s, with Bz varying between +6 and -5 nT. Geomagnetic conditions were quiet to unsettled. Quiet to unsettled geomagnetic conditions are expected on 10 and most of 11September, possibly modulated by the high speed stream from a coronal hole that passed the central meridian on 5 September, and a glancing blow from the 6 September CME. Locally, an isolated active period is  possible. Late on 11 and on 12 September, the impact of the halo CME related to the M4.5 flare from 9 September may result in active conditions and possibly a brief period of minor geomagnetic storming.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 10/08/14
Time UT: 16:00
Exposure 1/500 sec.

Observatory Sponli


Laniakea: Our Home Supercluster of Galaxies 

Image Credit: R. Brent Tully (U. Hawaii) et al., SDvision, DP, CEA/Saclay

 It is not only one of the largest structures known — it is our home. The just-identified Laniakea Supercluster of galaxies contains thousands of galaxies that includes our Milky Way Galaxy, the Local Group of galaxies, and the entire nearby Virgo Cluster of Galaxies. The colossal supercluster is shown in the above computer-generated visualization, where green areas are rich with white-dot galaxies and white lines indicate motion towards the supercluster center. An outline of Laniakea is given in orange, while the blue dot shows our location. Outside the orange line, galaxies flow into other galatic concentrations. The Laniakea Supercluster spans about 500 million light years and contains about 100,000 times the mass of our Milky Way Galaxy. The discoverers of Laniakea gave it a name that means “immense heaven” in Hawaiian.

APOD NASA 10-Sep-14

M45, Pleiades

In astronomy, the Pleiades, or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The celestial entity has several meanings in different cultures and traditions.

Imaging telescopes or lenses: Orion 80ED
Imaging cameras: Canon EOS 1000D / Rebel XS
Mounts: Orion Sirius EQ-G
Guiding cameras: Orion Star Shoot Planetary Imager & Autoguider
Focal reducers: Orion 0.85x Reducer/Corrector
Software: DeepSkyStacker, PHD guiding, photoshop, Canon EOS
Dates: Oct. 7, 2011
Frames: 24×240″ ISO1600
Integration: 1.6 hours

Author: Mike Carroll
AstroPhotography of the day by SPONLI 10 Sep 2014