Daily Archives: January 14, 2014

The Sun Online and solar activity. January 14, 2014

During last 24 hours five C-class flares and one M-class flare were reported. The M1.3 flare, which originated from the Catania sunspot group 98 (NOAA AR 1944), peaked at 21:51 UT on January 13. The flare was associated with the CME, however from the currently available data it is not clear if the CME was Earth directed. The background X-ray flax has almost a C-level, so we expect C-class flares and possibly also M-class flares. The Catania sunspot group 98 (NOAA AR 1944) is at the West solar
limb and we maintain the warning condition for a proton event. The SOHO/LASCO coronagraph data show front side CME without an associated flare (possibly stealth CME). The CME is first time seen in the SOHO/LASCO C2 field of view at about 21:17 UT on January 13. The bulk of the CME mass was
oriented southward of the Sun-Earth line and we do not expect the CME to arrive at the Earth. A glancing glow is possible, but not very probable, from the CME-driven shock wave. The eruption, at about 08:31 UT today, was accompanied by coronal dimming and EIT wave observed by SDO/AIA. From the
currently available data it is not clear if the associated CME was Earth directed.The solar wind speed is slowly decreasing, however the Earth is still inside a fast flow (680 km/s) associated with the extended (in latitude and in longitude) coronal hole in the northern hemisphere which first reached the central meridian on January 8. The interplanetary magnetic field magnitude is currently about 4 nT. Short interval of negative Bz component of the interplanetary magnetic field resulted in unsettled geomagnetic conditions early this morning (Izmiran reported values of K=3, and NOAA reported a Kp value of 4).We expect quiet to unsettled geomagnetic conditions in the next 24 hours.

Equipment: Coronado 90 + SBIG 8300s + LX75
Processing: Photoshop
Date: 01/14/14
Time UT: 15:00
Exposure 0.8 sec.

With SPONLI Space is getting closer!


The Gegenschein Over Chile


Image Credit & Copyright:
 Yuri Beletsky (Las Campanas Observatory, Carnegie Institution)

Is the night sky darkest in the direction opposite the Sun? No. 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. The gegenschein is sunlight back-scattered off small interplanetary dust particles. These dust particles are millimeter sized splinters from asteroids and orbit in the ecliptic plane of the planets. Pictured above from last year is one of the more spectacular pictures of the gegenschein yet taken. Here a deep exposure of an extremely dark sky over Las Campanas Observatory in Chile shows the gegenschein so clearly that even a surrounding glow is visible. Notable background objects include the Andromeda galaxy, the Pleiades star cluster, the California Nebula, the belt of Orion just below the Orion Nebula and inside Barnard’s Loop, and bright stars Sirius and Betelgeuse. The gegenschein is distinguished from zodiacal light near the Sun by the high angle of reflection. During the day, a phenomenon similar to the gegenschein called the glory can be seen in reflecting air or clouds opposite the Sun from an airplane.
APOD NASA 14-Jan-2014

NGC 3372: The Carina Nebula

The Carina Nebula (also known as the Great Nebula in Carina, the Eta Carinae NebulaNGC 3372, as well as the Grand Nebula) is a large bright nebula that has within its boundaries several related open clusters of stars. Some papers generally refer to this as the Carina Nebula, mostly because of differentiating the many paper published on this object, but the historical precedence as determined by southern observers like James Dunlop and John Herschel, who have both termed it the Eta Argus Nebula or Eta Carinae Nebula. John Herschel also describes “The star η Argus, with the Great nebula about it.” with many of his subsequent published papers supporting this.

Imaging telescopes or lenses: Takahashi FS60C
Imaging cameras: SBIG 8300M
Mounts: Skywatcher HEQ5 Pro GoTo HEQ5 Pro GoTo
Guiding telescopes or lenses: APO TS 80mm/480mm
Guiding cameras: Starlight Xpress Lodestar
Software: PixInsight 1.8 RC7
Filters: Astrodon Ha 5nm
Dates: Jan. 10, 2014
Frames: Astrodon Ha 5nm: 5×600″ bin 1×1
Integration: 0.8 hours
Darks: ~5

Autor:  Roberto Colombari

AstroPhotography of the day by SPONLI

14 January 2014

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