Daily Archives: December 27, 2013

The Sun Online and solar activity. December 27, 2013

There were four C flares on the Sun during the past 24 hours. The brightest one was a C4.4 flare peaking at 12:13 UT on December 27, for which the source region is still unknown at this moment. Since AR 11934 and 11936 are showing fast flux emergence, the probability for C flares over the next 48
hours is high (around 75%) and for M flares around 25%. The > 10 MeV proton flux as observed by GOES13 has stabilized around 2 pfu and is not expected to exceed the threshold level of 10 pfu in the next 48 hours. STEREO COR2 B observed a full halo CME at 3:12 UT on December 26, which was detected as a partial halo CME on LASCO C2 by CACTUS. This CME is related to a backsidedevent.  Another CME was observed by LASCO C2 at 7:36 UT on December 26 and by STEREO COR2 A at 7:54 UT. This CME is probably related to the C2.2 flare released by AR 11931 which peaked at 7:02 UT. There is a slight chance that this CME will deliver a glancing blow in the first half of December
30.Around 3h UT on December 27, the solar wind speed as observed by ACE increased quickly from about 265 to about 310 km/s. Over the past 24 hours, the magnitude of the Interplanetary Magnetic Field has increased from about 3 to about 7 nT. These observations may be the effect of a weak coronal
hole high speed stream arriving at Earth. Geomagnetic activity has been quiet over the past 24 hours (K Dourbes between 0 and 2; NOAA Kp between 1 and 2). Quiet geomagnetic conditions (K Dourbes < 4) are expected on December 27, 28, and 29.
SIDC

Equipment: Coronado 90 + SBIG 8300s + LX75
Processing: Photoshop
Date: 12/27/13
Time UT: 15:00
Exposure 0.8 sec.

With SPONLI Space is getting closer!

  

Related posts:

  1. The Sun Online and solar activity. December 25, 2013
  2. The Sun Online and solar activity. December 26, 2013
  3. The Sun Online and solar activity. December 24, 2013
  4. The Sun Online and solar activity. December 23, 2013

Melotte 15 in the Heart

LRGBV6Melotte15_JWalker

Image Credit & Copyright: Jimmy Walker
Explanation: Cosmic clouds seem to form fantastic shapes in the central regions of emission nebula IC 1805. Of course, the clouds are sculpted by stellar winds and radiation from massive hot stars in the nebula’s newbornstar cluster, Melotte 15. About 1.5 million years young, the cluster stars are near the center of this colorful skyscape, along with dark dust clouds in silhouette. Dominated by emission from atomic hydrogen, the telescopic view spans about 30 light-years. But wider field images reveal that IC 1805’s simpler, overall outline suggests its popular name – The Heart Nebula. IC 1805 is located along the northern Milky Way, about 7,500 light years distant toward the constellation Cassiopeia.

APOD NASA 27-dec-13

Related posts:

  1. Stars and Dust Across Corona Australis
  2. The Hydrogen Clouds of M33
  3. North America and the Pelican
  4. Alnitak, Alnilam, Mintaka

Soul Nebula in Cassiopeia

nos
Soul Nebula (Sharpless 2-199, LBN 667) is emission nebulae in Cassiopeia. Several small open clusters are embedded in the nebula: CR 34, 632, and 634 and IC1848.

Imaging telescopes or lenses: Sky-Watcher ED 80/600
Imaging cameras: Atik 383L+
Mounts: Sky-Watcher HEQ5
Guiding telescopes or lenses: Sky-Watcher ED 80/600
Software: photoshop, EQMod EQASCOM, Maxim DL, PHD guiding, CCDStack, Cartes du Ciel
Filters: Baader OIII 1.25″ Filter, Baader Ha 1.25″ Filter 7nm, Baader SII 1.25″ Filter
Accessories: ATIK OAG, Atik EFW2
Resolution: 3321×2445
Dates: Oct. 26, 2013, Nov. 2, 2013
Locations: Kefalonia
Frames:
Baader Ha 1.25″ Filter 7nm: 6×1200″ -10C bin 1×1
Baader L 1.25” Filter: 18×1200″ -10C bin 1×1
Baader OIII 1.25″ Filter: 6×1200″ -10C bin 1×1
Baader SII 1.25″ Filter: 6×1200″ -10C bin 1×1
Integration: 12.0 hours
Darks: ~20
Flats: ~20
Flat darks: ~20
Bias: ~20

Autor: Konstantinos Stavropoulos

27 December 2013

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

Related posts:

  1. Soul Nebula in Cassiopeia (narrowband)
  2. Soul Nebula in Cassiopeia
  3. NGC 281: the Pacman Nebula in Cassiopeia
  4. NGC 281 in the constellation of Cassiopeia

The Sun Online and solar activity. December 26, 2013

There were six C flares on the Sun during the past 24 hours, released by NOAA AR 11928, 11936, 11934, and 11931. The brightest one was a C2.2 flare from AR 11931 peaking at 07:02 UT on December 26. In the next 48 hours, the probability for C flares is high (around 80%) and for M flares around 30%. The > 10 MeV proton flux as observed by GOES13 started rising around 9h UT
on December 26, right after the long duration C1.3 flare produced by AR 11936. It is currently still rising, but it is not expected to exceed the threshold level of 10 pfu.During the past 24 hours, solar wind speed as observed by ACE has varied between about 260 and 300 km/s, while the magnitude of the Interplanetary Magnetic Field has decreased from about 11 to about 3 nT. Geomagnetic activity has been quiet over the past 24 hours (NOAA Kp between 1 and 3). Due to the expected arrival of a coronal hole high speed stream, quiet to active geomagnetic conditions (K Dourbes < 5) are expected in the second half of December 26 and on December 27. Quiet geomagnetic conditions are likely on December 28.

SIDC

Equipment: Coronado 90 + SBIG 8300s + LX75
Processing: Photoshop
Date: 12/26/13
Time UT: 01:00
Exposure 0.8 sec.

With SPONLI Space is getting closer!

  

Related posts:

  1. The Sun Online and solar activity. December 24, 2013
  2. The Sun Online and solar activity. December 25, 2013
  3. The Sun Online and solar activity. December 23, 2013
  4. The Sun Online and solar activity. December 22, 2013