Daily Archives: February 14, 2014

The Sun Online and solar activity. February 14, 2014

IDL TIFF file IDL TIFF file IDL TIFF file IDL TIFF file
The solar activity is still high. The strongest of three M-class flares in past 24 hours was the M2.3 flare originating from the Catania sunspot group 36 (NOAA AR 1974). The flare peaked at 02:57 UT on February 14, and was associated with coronal dimming and EIT wave. The currently available data do not show an associated CME. The M1.4 flare peaked at 15:57 UT on February 13 was associated with the coronal dimming, EIT wave and partial halo CME. The CME was first seen in the SOHO LASCO C2 field of view at 16:36 UT, had angular width of about 250 degrees and projected plane of the sky speed of about 450 km/s (as reported by the CACTUS software). We expect this CME to arrive at the Earth on February 17.  The full halo CME, first seen in the SOHO LASCO C2 field of view at 08:48 UT on February 14 was associated with the flare from the Catania sunspot group 28 (NOAA AR 1967) currently at W150. Due to the CME source region position on the far side of the Sun, the CME will not arrive at the Earth and will therefore have no geomagnetic consequences. The Catania sunspot group 36 (NOAA AR 1974) still has beta-gamma-delta  configuration of its photospheric magnetic field. We expect C-class and M-class flares, and possibly also an isolated X-class flare. Due to position of this sunspot group (approaching to West solar limb) we maintain the warning condition for a proton event.The Earth is currently inside the slow solar wind with the speed of 350 km/s. The  interplanetary magnetic field magnitude is stable and its current value is about 5nT. The low-latitude coronal hole (between N20 and N40) in the northern hemisphere has reached the central meridian yesterday evening. The associated fast flow is expected at the Earth late on February 16 or early on February 17.  We expect quiet geomagnetic conditions in the coming hours and active to minor storm conditions on February 15 and 16 due to arrival of CMEs from February 11, February 12 and February 13.
SIDC

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 100 frames
Date: 02/14/14
Time UT: 14:00
Exposure 1/500 sec.

With SPONLI Space is getting closer

IC 1805: Light from the Heart

IC 1805
Image Credit & Copyright: César Blanco González

Sprawling across almost 200 light-years, emission nebula IC 1805 is a mix of glowing interstellar gas and dark dust clouds about 7,500 light-years away in the Perseus spiral arm of our galaxy. Stars were born in this region whose nickname, the Heart Nebula, derives from its Valentine’s-Day-appropriate shape. The clouds themselves are shaped by stellar winds and radiation from massive hot stars in the nebula’s newborn star cluster Melotte 15 about 1.5 million years young. This deep telescopic image maps the pervasive light of narrow emission lines from atoms in the nebula to a color palette made popular in Hubble images of star forming regions. The field of view spans about two degrees on the sky or four times the diameter of a full moon. The cosmic heart is found in the constellation of Cassiopeia, the boastful mythical Queen of Aethiopia.

NASA APOD 14-feb-2014

M52 in the Cassiopeia constellation

c646bddf74468c556f31fe557d890901.1824x0_q100_watermark

Messier 52 (also known as M 52 or NGC 7654) is an open cluster in the Cassiopeia constellation. It was discovered by Charles Messier in 1774. M52 can be seen from Earth with binoculars.

Due to interstellar absorption of light, the distance to M 52 is uncertain, with estimates ranging between 3,000 and 7,000 light years. One study identified 193 probable members of the cluster, with the brightest member being magnitude 11.  Messier 52 is evaluated at about 35 million years old.

Imaging telescopes or lenses: SkyWatcher 254/1200 Newton f/4.7
Imaging cameras: Canon EOS 350D modified
Mounts: SkyWatcher EQ6 SynScan
Dates: Sept. 19, 2009
Frames: Baader MPCC : 40×120″ ISO1600
Integration: 1.3 hours

Autor: Oliver Runde

AstroPhotography of the day by SPONLI

14 February 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

The Sun Online and solar activity. February 11, 2014

The partial halo CME first seen in the SOHO LASCO C2 field of view at 13:25 UT on February 12, was associated with the C7.9 flare (peaking at 12:34 UT) originating from the Catania sunspot group 40 (NOAA AR 1979). The CME had angular width of about 200 degrees and propagated with the projected plane of the sky speed of about 530 km/s. The bulk of the CME mass was directed northward of the Sun-Earth line and it is therefore not very probable that the CME will arrive at the Earth. The arrival of the associated CME-driven shock wave might be expected in the evening of February 15, producing at most unsettled geomagnetic conditions.  The M2.1 flare, peaking at 15:51 UT of February 12 was associated with the faint partial halo CME first seen in the SOHO LASCO C2 field of view at 16:24 UT. The CME had the projected plane of the sky speed of about 500 km/s. From the currently available data, it seems that the CME is Earth directed. The expected arrival of the CME is February 16.
SIDC

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 100 frames
Date: 02/13/14
Time UT: 14:00
Exposure 1/500 sec.

With SPONLI Space is getting closer