Daily Archives: February 4, 2014

The Sun Online and solar activity. February 4, 2014

The solar soft X-ray background flux is slowly varying between the C and M-levels in response to slow activity in the Catania sunspot groups 27 and 28 (NOAA ARs 1968 and 1967 respectively). Numerous impulsive flares occur on top of this varying background. The two strongest flares of the past 24 hours occurred today: the M3.8 flare peaking at 01:23 UT in the Catania sunspot group 27 (NOAA AR 1968) and the M5.2 flare peaking at 04:00 UT in the Catania sunspot group 28 (NOAA AR 1967). None of the flares was associated with a major CME. Catania sunspot groups 27 and 28 maintain respectively beta-gamma and beta-gamma-delta configurations of their photospheric magnetic field. We expect continuing flaring activity on the M-level, with an isolated X-class flare being probable, especially in the
Catania sunspot group 28 (NOAA AR 1967). Due to the position of the Catania sunspot group 28 close to the solar central meridian, a CME associated with a flare in this active region may arrive at the Earth. A major CME in this sunspot group may lead to a proton event, so we maintain the warning condition. A weak partial halo CME first appeared in the SOHO/LASCO C2 field of view today at 01:25 UT (after a data gap). It had the angular width of around 170 degrees and the plane-of-the-sky projected speed of
around 700 km/s. The CME was most probably associated with an eruption in the western part of the Catania sunspot group 28 (NOAA AR 1967) accompanied with a weak and small coronal dimming and a post-eruption arcade. No flare was reported as the eruption seemed associated with one of the slow
increases of the solar soft X-ray flux, with the above-mentioned (unrelated) M3.8 flare superposed on top of it. Due to the weakness of the partial halo and based on its morphology, we expect only the arrival of a
CME-driven shock at the Earth, probably late on February 7, with weak geomagnetic consequences up to the active level (K = 4). The Earth is currently inside a slow (around 350 km/s) solar wind flow with slightly elevated (around 6-7 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions in the coming hours.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 100 frames
Date: 02/04/14
Time UT: 18:00
Exposure 1/500 sec.

With SPONLI Space is getting closer!


A Particle Beam Jet forms HH 24

Image Credit: Hubble Legacy Archive, NASA, ESA – Processing: Judy Schmidt

Explanation: If you visit HH 24, don’t go near the particle beam jet. This potential future travel advisory might be issued because the powerful jet likely contains electrons and protons moving hundreds of kilometers per second. The above image was taken by the Hubble Space Telescope in infrared light in order to better understand turbulent star forming regions known as Young Stellar Objects (YSOs). Frequently when a star forms, a disk of dust and gas circles the YSO causing a powerful central jets to appear. In this case, the energetic jets are creating, at each end, Herbig-Haro object 24 (HH 24), as they slam into the surrounding interstellar gas. The entire star forming region lies about 1,500 light years distant in the Orion B molecular cloud complex. Due to their rarity, jets like that forming HH 24 are estimated to last only a few thousand years.

NASA APOD 04-Feb-2014

NGC 1333 in the constellation Perseus

6548b7535ba122ba35435a256539216a.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright Dean Salman
NGC 1333 is a reflection nebula, which lies about 1,000 light-years from Earth in the constellation of Perseus. Lastly, astronomers have found around 50 brown-dwarfs within the nebula, which is a larger part of the Perseus molecular cloud. Also nearby is the Rho Ophiuchi cloud complex, which contains about 3,000 solar masses of material. One such member of the brown-dwarf family belonging to the nebula is six times more massive than Jupiter, making it one of the smallest free-floating objects currently known of.

Imaging telescopes or lenses: Intes Micro MN84
Imaging cameras: QSI 583 wsg
Mounts: Astro-Physics 1200 GTO
Guiding cameras: Starlight Xpress Lodestar
Software: Adobe Photoshop CC, PixInsight
Filters: Astrodon Luminance, Astrodon RGB filter set
Dates: Oct. 24, 2013
Astrodon Luminance: 9×1200″
Astrodon RGB filter set: 48×900″

Autor: Dean Salman

AstroPhotography of the day by SPONLI

04 February 2014

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