A proton event is currently in progress. From January 6 on at 8h20 UTC the proton flux started to rise for > 10 MeV, > 50 MeV and > 100 MeV the energy levels. The event threshold of 10 pfu was passed on 9h15 UTC for > 10 MeV protons and on 9h45 UTC for > 50 MeV protons. The proton flux is still above (>10 MeV) or near (>50 MeV) the event threshold. This proton event was due to a strong flare erupting from NOAA AR 1936, which has turned around the west limb a few days ago. The flare was visible around
7h45 UTC in STEREO A EUV195 and (partly) in SDO/AIA imagery. The flare was associated with a metric type II radio burst, detected in Learmonth (estimated shock wave speed 1383 km/s) and Culgoora spectrographic data. There is also a strong westward halo CME, observed by STEREO A/COR2 and LASCO/C2. The CME speed at eruption is estimated around 1200 km/s, but has slowed down to 900 km/s. Due to the position of the solar origin we estimate the geoeffectiveness of this CME to be limited to at most a glancing blow around January 8 at 4h UTC. NOAA AR 1944 was relatively stable and produced three C flares over the past 24 hours. Region NOAA AR 1946 has shown some growth. The likelihood for C and M flares remains high. There is a slight chance for an X-flare.Current solar wind speed has decreased to 400 km/s. The magnitude of the interplanetary magnetic field remains around 5 nT, with a fluctuating Bz-component. Current geomagnetic conditions are quiet (estimated NOAA Kp and local K_Dourbes and K_Izmiran=0 to 1). Mainly quiet conditions are expected to continue for the next 24
hours. Unsettled to active (K=3 to 4) conditions might be reached on January 8 due to the possible arrival of a glancing blow from the CMEs of January 4 and January 6.
Equipment: Coronado 90 + SBIG 8300s + LX75
Time UT: 19:00
Exposure 0.8 sec.
With SPONLI Space is getting closer!
Expedition 38 Crew, NASA
Cubes are orbiting the Earth. Measuring ten-centimeters on a side, CubeSats – each roughly the size of a large coffee mug — are designed to be inexpensive both to build and to launch. Pictured above, three CubeSats were released from the International Space Station (ISS) last November by the arm of the Japanese Kibo Laboratory module. CubeSats are frequently created by students as part of university science orengineering projects and include missions such as collecting wide angle imagery of the Earth, testing orbital radio communications, monitoring the Earth’s magnetic field, and exploring the Earth’s surrounding radiations. Depending on the exact height of their release, CubeSats will re-enter the Earth’s atmosphere on the time scale of months to years.
NASA APOD 06-Jan-2014
Lagoon Nebula (down) Trifid Nebula (up) in the constellation Sagittarius.
The Lagoon Nebula is estimated to be between 4,000-6,000 light years from the Earth. In the sky of Earth, it spans 90′ by 40′, translates to an actual dimension of 110 by 50 light years. Like many nebulas, it appears pink in time-exposure color photos but is gray to the eye peering through binoculars or a telescope, human vision having poor color sensitivity at low light levels. The Trifid Nebula was the subject of an investigation by astronomers using the Hubble Space Telescope in 1997, using filters that isolate emission from hydrogen atoms, ionized sulfur atoms, and doubly ionized oxygen atom. The images were combined into a false-color composite picture to suggest how the nebula might look to the eye.
Camera : SBIG STF-8300M (cooled at-5C)
Telescope/Lens : Takahashi FSQ-85ED (450mm f/5.3)
Filter : Astrodon Ha, SII, OIII
Tracking Mount : Takahashi EM-11
Autoguide : SBIG SG-4
Total Exposure Time : Ha-72mins, SII-105mins, OIII-75mins
w Dark Frames, Bias Frames
process w CCD stack,PI, PS5
Autor: Vincent Vegabort
AstroPhotography of the day by SPONLI
6 January 2014
We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.