Daily Archives: October 21, 2014

The Sun online and solar activity. 21.10.2014

солнце 21

INFO FROM SIDC - RWC BELGIUM 2014 Oct 21 13:39:38

Catania sunspot group 88 (NOAA AR 2192) continues to grow and maintains the
beta-gamma-delta configuration of its photospheric magnetic field. It
produced four M-class flares in the past 24 hours, the strongest of them
being the M4.5 flare peaking at 16:37 UT. We expect flaring activity mostly
on the M-level in this group, with a good chance for an X-class flare. As
the Catania sunspot group 88 approaches the solar central meridian, a major
eruption in this active region may lead to a geoeffective CME and a proton
event. An active region at the north-east limb (no sunspots are still
visible) produced several flares including the C6.3 flare peaking at 10:58
UT today. It may produce an isolated M-class flare as well. A weak partial
halo CME (angular width around 200 degrees) was first seen in the
SOHO/LASCO C2 field of view at 19:12 UT on October 20. The CME was very
weak and disappeared before reaching the LASCO C3 field of view, so we do
not expect it to arrive at the Earth. The source region of the CME is the
eruption in the Catania sunspot group 88 (NOAA AR 2192) and in the region
to the south-west of it, starting around 18:40 UT, accompanied with coronal
dimmings and the M1.4 flare peaking at 19:02 UT. The solar wind speed is
currently high (around 640 km/s) and the interplanetary magnetic filed
(IMF) magnitude is around 7 nT. Due to elevated values of the IMF magnitude
and predominantly southward IMF direction, the K index reached 5 during one
interval yesterday evening (according to Dourbes, IZMIRAN, and NOAA).
Currently the north-south IMF component Bz is fluctuating around zero, so
we expect quiet to unsettled geomagnetic conditions (K < 4) in the coming
hours, possibly with isolated intervals of active conditions (K = 4).

Orion Nebula

17c02f4e6f013ca894aa7f9d049fcd1a.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright Berchan's Observatory

The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated south of Orion’s Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2000 times the mass of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.

The Orion Nebula is one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula.

Imaging telescopes or lenses: Astro-Tech AT111EDT
Imaging cameras: SBIG STF-8300M
Mounts: Orion Sirius EQ-G Goto
Guiding telescopes or lenses: Orion Mini Guidescope
Guiding cameras: ALccd / QHYCCD QHY5L II mono
Focal reducers: WILLIAM OPTICS P-FLAT 4
Software: Adobe PhotoshopCS6
Filters: Baader LRGB 2″ Filters
Accessories: Starlight Xpress SX USB Filter Wheel 5×2″
Resolution: 3257×2532
Dates: Oct. 16, 2014
Frames: 5×600″
Integration: 0.8 hours
Avg. Moon age: 22.32 days
Avg. Moon phase: 48.17%
RA center: 83.873 degrees
DEC center: -5.354 degrees
Orientation: -164.396 degrees
Field radius: 0.976 degrees

Аuthor: berchan, 21.10.2014

AstroPhotography of the day of SPONLI