Daily Archives: May 20, 2014

The Sun Online and solar activity. May 20, 2014

There were two C flares during the past 24 hours. The brightest flare was a C1.9 flare released by NOAA AR 12060, peaking at 01:48 UT on May 20. It was associated with a filament eruption near 50W 10S as observed around 03:24 UT in the 304 Angstrom channel of SDO-AIA. STEREO COR2A detected a narrow
CME that is probably associated with this filament eruption at 5:24 UT. This CME is not expected to be geoeffective. In the next 48 hours, more C flares are likely, especially from NOAA AR 12060, 12071, and 12066.Over the last 24 hours, solar wind speed as observed by ACE was low and steady between 340 and 370 km/s, while the magnitude of the Interplanetary Magnetic Field (IMF) varied between 2 and 6 nT. Over the past 24 hours, geomagnetic conditions were quiet (K Dourbes between 0 and 3; NOAA Kp between 1 and 2). Quiet geomagnetic levels (K Dourbes < 4) are expected on May 20 and 21. As an effect of the high speed stream associated to a weak southern coronal hole, there is a chance for active geomagnetic conditions
(K Dourbes = 4) on May 22.


In the Center of Spiral Galaxy M61 

Image Credit: ESA/Hubble, NASA; Acknowledgements: G. Chapdelaine & L. Limatola

M61 is a barred spiral galaxy located in the nearby Virgo Cluster of Galaxies. Visible in M61 are a host of features common to spiral galaxies: bright spiral arms, a central bar, dust lanes, and bright knots of stars. M61, also known as NGC 4303, in similar to our own Milky Way Galaxy. M61 was discovered by telescope in 1779 twice on the same day, but one observer initially mistook the galaxy for a comet. Light from M61takes about 55 million years to reach us. The above image of the central regions of M61 was taken with the Hubble Space Telescope and adapted for release as part of the Hubble’s Hidden Treasures image processing competition.

NASA APOD 20-May-14

Wild Duck Cluster M11

f46bbaa8c70ff69c1fe6799617e0cd56.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-© Peter Folkesson

The Wild Duck Cluster (also known as Messier 11, or NGC 6705) is an open cluster in the constellation Scutum. It was discovered by Gottfried Kirch in 1681.

The Wild Duck Cluster is one of the richest and most compact of the known open clusters, containing about 2900 stars. Its age has been estimated to about 220 million years. Its name derives from the brighter stars forming a triangle which could represent a flying flock of ducks.

Imaging telescopes or lenses: Meade Model 2080
Imaging cameras: Canon 600D
Mounts: Sky-Watcher HEQ5 PRO
Focal reducers: Meade f/6.3
Software: PixInsight
Dates: Oct. 11, 2012
Locations: Borås, Sweden
Frames: 9×60″ ISO1600
Integration: 0.1 hours
Darks: ~14
Flats: ~8
Bias: ~10

Author: Peter Folkesson

AstroPhotography of the day by SPONLI
20 May 2014