The strongest flare during the last 24 hours was an M1.4 flare peaking on 1 July at 11:23UT and originating from filamentary activity between small sunspot regions NOAA 2102 and 2106. Most of the C-class flares also originated from NOAA 2106. NOAA 2104 and 2107 are the largest and magnetically most complex sunspot regions, but produced only one C-class flare each, the strongest a C6.6 peaking at 07:37UT this morning and having its source in NOAA 2107. No coronagraphic images are available yet to evaluate any of the CMEs that may be associated to the recent flaring activity. The other CMEs had their source on the Sun’s farside or were directed away from Earth. There’s a good chance for further M-class flaring.
Solar wind speed hovered around 350 km/s while Bz oscillated between -5 and +5 nT. Quiet geomagnetic conditions were observed and are expected to remain so.
Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Time UT: 16:00
Exposure 1/500 sec.
Image Credit: Hubble Legacy Archive, NASA, ESA – Processing & Licence: Judy Schmidt
Some stars explode in slow motion. Rare, massive Wolf-Rayet stars are so tumultuous and hot that they slowly disintegrating right before our telescopes. Glowing gas globs each typically over 30 times more massive than the Earth are being expelled by violent stellar winds. Wolf-Rayet star WR 124, visible near the above image center spanning six light years across, is thus creating the surrounding nebula known as M1-67. Details of why this star has been slowly blowing itself apart over the past 20,000 years remains a topic of research. WR 124 lies 15,000 light-years away towards the constellation of Sagitta. The fate of any given Wolf-Rayet star likely depends on how massive it is, but many are thought to end their lives with spectacular explosions such as supernovas or gamma-ray bursts.
APOD NASA 01-Jul-14
The Iris Nebula, also NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across.
Imaging telescopes or lenses: Ian King Ikharos 8″ RC
Imaging cameras: Atik 460 EX
Mounts: Software Bisque Paramount MX
Guiding telescopes or lenses: Ian King Ikharos 8″ RC
Guiding cameras: Atik 314L+
Software: PixInsight, Software Bisque CCDSoft 5, Software Bisque TheSkyX, iLanga AstroPlanner, Matt Thomas’s CCDCommander
Filters: Baader Luminance 36mm, Baader Red, Green, Blue 36mm
Accessories: Atik EFW2, Innovations Foresight On-axis guider
Dates: June 28, 2014
Integration: 15.5 hours
Author: Colin McGill
AstroPhotography of the day by SPONLI 01 July 2014