Daily Archives: December 30, 2013

Nebulas in Hydrogen Alpha

@ Vincent Vegabort

The Sun Online and solar activity. December 29, 2013

There were one M flare and nine C flares on the Sun during the past 24 hours. The M3.1 flare was released by NOAA AR 11936, and peaked at 07:56 UT on December 29. The probability for C flares over the next 48 hours is very high (around 95%) and for M flares around 55%. There is a slight chance for an X flare, especially from AR 11936.  The > 10 MeV proton flux as observed by GOES13 started rising near 18:50 UT on December 28. It exceeded the threshold level of 10 pfu around 21:50 UT, and attained a peak value of 29 pfu at 23:15 UT. It went under the 10 pfu threshold again at 7:50 UT on
December 29, and is further decreasing. The > 50 MeV and > 100 MeV proton flux have also increased, but have not exceeded the 10 pfu threshold. This proton event is most probably associated with the halo CME first observed by LASCO C2 at 17:36 UT on December 28, which is probably linked to a backsided eruption. A warning condition for further proton storms is issued.Around 13h UT on December 28, the   olar wind speed as observed by ACE suddenly increased above its plateau of around 300 km/s, and gradually rose further to a plateau of around 370 km/s. During the past 24 hours, the magnitude of the Interplanetary Magnetic Field varied between about 3 nT and 9 nT. A continuation of nominal solar wind conditions is expected on December 29-31. Geomagnetic activity has been quiet over the past 24 hours
(NOAA Kp between 1 and 2). Quiet geomagnetic conditions (K Dourbes < 4) are expected on December 29, 30, and 31, with a slight chance of active conditions (K Dourbes = 4) in the first half of December 30 (in case the Earth suffers a glancing blow from the CME first observed by LASCO C2 at 7:36 UT on December 26).

Equipment: Coronado 90 + SBIG 8300s + LX75
Processing: Photoshop
Date: 12/29/13
Time UT: 17:00
Exposure 0.8 sec.

With SPONLI Space is getting closer!


The Sun Online and solar activity. December 30, 2013

Several C-class flares occurred since our last bulletin, all originating in NOAA AR 11936. The largest one was a C5.4 flare peaking at 19:30 UT on December 29. We expect more C-class flares in the coming 24h. There is also a good chance (around 50%) for an M-class flare. Due to its location close
to the west limb and the fact that NOAA AR 11934 is still showing flux emergence and associated activity, we issue a warning condition for a proton event in case a strong flare occurs in this active region.

CACTUS reported the detection of a partial halo CME at 07:12 UT on December 29. This CME originated near NOAA AR 11938. Coronagraph images from LASCO/C2 and STEREO-B/COR2 show that this is a very slow event (around 180 km/s) which is mostly southward directed. We do not expect geomagnetic effects from this eruption.
The leading edge of a recurrent coronal hole has crossed the central meridian. This coronal hole has grown compared to the previous rotation. At that time, the associated fast wind stream caused a geomagnetic storm (Kp up to 6, K_Dourbes up to 5).The solar wind speed has decreased further to
300 km/s and the total strength of the magnetic field lies around 6 nT. Current geomagnetic conditions are quiet. We expect them to remain so until late on January 1, when we foresee the arrival of a coronal hole wind stream. Minor storm conditions (K_Dourbes up to 5) are expected.

Equipment: Coronado 90 + SBIG 8300s + LX75
Processing: Photoshop
Date: 12/30/13
Time UT: 17:00
Exposure 0.8 sec.

With SPONLI Space is getting closer!


Quantum Streampunk Fantasy Fractal Landscape

Image Credit & Copyright: Jos Leys (Mathematical Imagery), Ultra Fractal
Explanation: What strange world is this? Pictured above is no real place but rather a purely mathematical visualization of a generalization of a fractal into three dimensions. Classical fractal diagrams are typically confined to the two dimensions inherent in the complex number plane, demarking regions where an iterative function diverges. Recently explored additions expand the Mandelbrot set of fractals to three dimensions with prescriptions dubbed Mandelbox and Mandelbulb sets. The results are often visually stunning creations of virtual worlds with limitless detail, some of which you can fly through. Pictured above is one such mathematical fantasy, possibly reminiscent of some sort of steam-punkian, quantum-mechanical landscape.

Little Dumbbell Nebula in Perseus

c5761cede58584815fc742b6ae2cb8e4.1824x0_q100_watermark_watermark_opacity-5_watermark_position-5_watermark_text-Copyright Tim Jardine 2013

The Little Dumbbell Nebula, also known as Messier 76NGC 650/651, the Barbell Nebula, or the Cork Nebula, is a planetary nebula in theconstellation Perseus. It was discovered by Pierre Méchain in 1780 and included in Charles Messier’s catalog of comet-like objects as number 76. It was first recognised as a planetary nebula in 1918 by the astronomer Heber Doust Curtis. However, there is some contention to this claim, as Isaac Roberts in 1891 did suggest that M76 might be similar to the Ring Nebula (M57), being instead as seen from the side view. The structure is now classed as a bipolar planetary nebula (BPNe). Distance to M76 is currently estimated as 780 parsecs or 2,500 light years, making the average dimensions about 0.378 pc. (1.23 ly.) across.

Imaging telescopes or lenses: Celestron C1100 Edge HD
Imaging cameras: Atik 428EX
Mounts: Sky-Watcher EQ6 Pro
Guiding telescopes or lenses: Celestron C1100 Edge HD
Software: PixInsight, Stark Labs Nebulosity 3.1, PHD, Adobe Photoshop CS5 CS5
Filters: Baader Planetarium L,R,G,B,Ha,Oiii,Sii
Accessories: Starlight Xpress Lodestar, Celestron OAG
Dates: Oct. 1, 2012

Autor: Tim Jardine

AstroPhotography of the day by SPONLI
30 December 2013

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