Daily Archives: July 11, 2014

The Sun Online and solar activity. July 11, 2014

Two C-class and one M-class flares were observed in the past 24 hours. A C7.4 flare originated from Catania sunspot region 16 (NOAA AR 2113) peaking at 21:13 UT on July 10, almost immediately followed by an impulsive M1.5 flare from Catania sunspot region 5 (NOAA AR 2106). The CME of July 10 has further extended to an asymmetric halo CME, but is propagating mainly west of the Sun-Earth line. No additional Earth-affecting CMEs were identified. Flaring activity is expected to continue at the level of C-class flares, with a slight chance for an isolated M-class flare.Solar wind speed is near 400 km/s, as measured by ACE.   The magnitude  of  interplanetary magnetic field was stable with values near 5 nT with a Bz component fluctuating between -4 and +4 nT. Geomagnetic conditions have been quiet to unsettled and are expected to remain so till the possible arrival of a glancing blow July 8 CME. Active conditions are expected on the UT evening of July 11. Active conditions are also possible on the UT morning of July 13, due to the arrival of a glancing blow of the July 9 CME.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 07/11/14
Time UT: 16:00
Exposure 1/500 sec.

Observatory Sponli


Spotty Sunrise over Brisbane 

Image Credit & Copyright: Stephen Mudge

In this composite cityscape, dawn’s first colors backdrop the lights along Brisbane’s skyline at the southeastern corner of Queensland, Australia, planet Earth. Using a solar filter, additional exposures made every 3.5 minutes follow the winter sunrise on July 8 as planet-sized sunspots cross the visible solar disk. The sunspots mark solar active regions with convoluted magnetic fields. Even as the maximum in the solar activity cycle begins to fade, the active regions produce intense solar flares and eruptions launching coronal mass ejections (CMEs), enormous clouds of energetic particles, into our fair solar system.

APOD NASA 11-Jul-14

Orion widefield

Orion’s seven brightest stars form a distinctive hourglass-shaped asterism, or pattern, in the night sky. Four stars—Rigel, Betelgeuse, Bellatrix and Saiph—form a large roughly rectangular shape, in the centre of which lie the three stars of Orion’s Belt (centre of the image) — AlnitakAlnilam and Mintaka. Descending from the ‘belt’ is a smaller line of three stars (the middle of which is in fact not a star but the Orion Nebula), known as the hunter’s ‘sword’.

Hanging from Orion’s belt is his sword,  consisting of the multiple stars θ1 and θ2 Orionis, called the Trapezium and the Orion Nebula (M42).   Besides these nebulae, surveying Orion with a small telescope will reveal a wealth of interesting deep-sky objects, including M43, M78, as well as multiple stars including Iota Orionis and Sigma Orionis. A larger telescope may reveal objects such as Barnard’s Loop and theFlame Nebula (NGC 2024), as well as fainter and tighter multiple stars and nebulae. All of these nebulae are part of the larger Orion Molecular Cloud Complex, which is located approximately 1,500 light-years away and is hundreds of light-years across. It is one of the most intense regions of stellar formation visible in our galaxy.

Imaging telescopes or lenses: Canon 50mm f/1,4 Lense
Imaging cameras: Canon EOS 550D / Rebel T2i
Mounts: Skywatcher Neq6 pro synscan
Guiding cameras: QHY5
Software: DeepSkyStacker, PHD guiding, photoshop
Dates: Oct. 5, 2013
Frames: 15×420″
Integration: 1.8 hours

Author: Ivan Jevremovic
AstroPhotography of the day by SPONLI 11 July 2014