Daily Archives: August 10, 2014

The Sun Online and solar activity. August 10, 2014

Flaring activity remains at a low level. NOAA AR 2137 was numbered yesterday and shows flux emergence. This region, and NOAA AR 2135, produced flares at the high B-level in the past 24 hours. A C-class flare is possible from both regions. No earth-directed CMEs were observed since our last bulletin. We expect the current quiet geomagnetic conditions to persist in the coming days, with the chance for an isolated unsettled period (K=3). Unsettled to at most active geomagnetic conditions are
possible starting August 13, under the influence of a small coronal hole that is currently passing the central meridian.
SIDC

Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Date: 08/10/14
Time UT: 16:00
Exposure 1/500 sec.

Observatory Sponli

A Perseid Below

Image Credit: Ron Garan, ISS Expedition 28 Crew, NASA

Denizens of planet Earth typically watch meteor showers by looking up. But this remarkable view, captured on August 13, 2011 by astronaut Ron Garan, caught a Perseid meteor by looking down. From Garan’s perspective onboard the International Space Station orbiting at an altitude of about 380 kilometers, the Perseid meteors streak below, swept up dust left from comet Swift-Tuttle heated to incandescence. Theglowing comet dust grains are traveling at about 60 kilometers per second through the denser atmosphere around 100 kilometers above Earth’s surface. In this case, the foreshortened meteor flash is right of frame center, below the curving limb of the Earth and a layer of greenish airglow, just below bright star Arcturus. Want to look up at a meteor shower? You’re in luck, as the 2014 Perseids meteor shower peaks this week. Unfortunately, the fainter meteors in this year’s shower will be hard to see in a relatively bright sky lit by the glow of a nearly full Moon.

APOD NASA 10-Aug-14

IC 2944: Running Chicken Nebula

IC 2944, also known as the Running Chicken Nebula or the Lambda Cen Nebula, is an open cluster with an associated emission nebula found in the constellation Centaurus, near the star Lambda Centauri. It features Bok globules, which are frequently a site of active star formation. However, no evidence for star formation has been found in any of the globules in IC 2944.

Imaging telescopes or lenses: Astro-Physics 152mm f/7.5 Starfire EDF
Imaging cameras: FLI ProLine Proline 16803
Mounts: Software Bisque Paramount MX
Guiding telescopes or lenses: Takahashi FS-60C
Guiding cameras: Starlight Xpress Superstar
Focal reducers: Astro-Physics AP 4.0″ Field Flattener
Software: PixInsight 1.8, FocusMax, Maxim DL Pro 5, Software Bisque TheSky6 Professional, Photoshop CS Photo Shop CS5, CCD Autopilot 5
Filters: Astrodon E-series LRGB Ha 5nm
Accessories: Sirius Dome
Dates: Jan. 28, 2014
Locations: Sydney Australia
Frames: 21×1200″
Integration: 7.0 hours

Author: David Nguyen
AstroPhotography of the day by SPONLI 10 Aug 2014

The Sun Online and solar activity. August 9, 2014

Four C-class flares were observed since our last bulletin. The largest one was a C4.5 flare at 16:57 UT on August 8 in NOAA AR 2135, that has developed into a beta-gamma region. This region, as well as NOAA AR 2132, is expected to produce more C-class flares in the coming days. There is also a small chance for an M-flare. CACTus reported on a halo CME observed in LASCO images on August 8 around 16:36 UT. This full halo CME was associated to a strong eruption observed in the center of the solar disk in STEREO-a/EUVI 195 images starting at 15:55 UT. This is thus a back-sided event and therefore the CME will not be geo-effective.We expect quiet geomagnetic conditions to persist, with a chance for unsettled conditions (K maximum 3) under the possible influence of a coronal hole wind stream.
SIDC

Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Date: 08/09/14
Time UT: 16:00
Exposure 1/500 sec.

Observatory Sponli

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