Daily Archives: October 6, 2014

Sun online. Solar activity. 05.10.2014







Four low-level C-class flares were recorded. The strongest was a C1.9

peaking at 22:15UT and produced by NOAA 2172 from behind the west limb. The

x-ray background flux has decreased below the C1-level. There are currently

8 sunspot groups visible on the solar disk. Most of them are fairly simple,

and contain a filament or are close to one. Further C-class flaring is

expected. A 20-degrees long, thin, but dynamical s-shaped filament has

rounded the southeast limb. This area seems to have been responsible for a

filament eruption on 03 October between 03:00 and 04:30UT. The associated

CME was not directed to Earth.


Solar wind speed increased from about 330 to 370 km/s. Bz was initially

fluctuating around 0 nT untill about 05:00UT, when it gradually increased

to the current +10 nT. Geomagnetic conditions were quiet to unsettled, and

are expected to remain so, with locally an active episode possible.


Sun online. 06.10.2014




The only C-class event of the period was a C1 flare peaking at 09:54UT and

produced by NOAA 2178. The 7 groups currently visible on the solar disk

have a relatively simple magnetic configuration and have been quiet.

Numerous filaments are present on the solar disk, but they are mostly small

and quiet. There remains a chance on an C-class flare. No obvious CMEs were

observed during the period.


A corotating interaction region has influenced the solar wind since late on

3 October. Around 17:00UT on 4 October, the direction of the IMF turned

towards the Sun, and solar wind speed peaked near values of 480 km/s early

on 5 October. Bz was mostly positive, fluctuating between -5 and +10 nT

during the latter half of the observation period. Geomagnetic conditions

were quiet to unsettled and are expected to remain so.

the Bubble Nebula

66d573a1c8c77fa07f0c8c6da871d117.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright Patrick Gilliland 2014


NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The “bubble” is created by the stellar wind from a massive hot, 8.7 magnitude young central star, the 15 ± 5 M☉ SAO 20575 (BD+60 2522). The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel. The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses.


With an 8 or 10-inch (250 mm) telescope, the nebula is visible as an extremely faint and large shell around the star. The nearby 7th magnitude star on the west hinders observation, but one can view the nebula using averted vision.[6] Using a 16 to 18-inch (460 mm) scope, one can see that the faint nebula is irregular, being elongated in the north south direction.

Imaging telescopes or lenses: Borg 101 ED
Imaging cameras: QSI 683WSG-8 OAG QSI 683
Mounts: Takahashi EM200 Temma 2 Main
Guiding telescopes or lenses: Borg 101 ED
Guiding cameras: QSI 683WSG-8 OAG QSI 683
Focal reducers: Borg Super reducer f/4
Resolution: 3185×2136
Dates: Oct. 4, 2014
Frames: 30×1200″
Integration: 10.0 hours
Avg. Moon age: 9.75 days
Avg. Moon phase: 74.10%
RA center: 349.961 degrees
DEC center: 61.233 degrees
Pixel scale: 2.695 arcsec/pixel
Orientation: 90.529 degrees
Field radius: 1.436 degrees

Аuthor: Patrick, 06.10.2014