Two X-class flares were observed today, both originating from the active region which just rotated from the behind of the east solar limb. The impulsive X2.2 flare peaked at 11:44 UT and the second X1.5 flare peaked at 12:52 UT. The SDO/AIA data indicate that the flares were possibly associated with the CMEs. No coronagraph data are yet available.
Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Time UT: 16:00
Exposure 1/500 sec.
Image Credit & Copyright: X-ray: NASA, CXC, R. Kilgard (Wesleyan U. et al.; Optical: NASA, STScI
What if we X-rayed an entire spiral galaxy? This was done (again) recently by NASA’s Chandra X-ray Observatory for the nearby interacting galaxies known as the Whirlpool (M51). Hundreds of glittering x-ray stars are present in the above Chandra image of the spiral and its neighbor. The image is a conglomerate of X-ray light from Chandra and visible light from the Hubble Space Telescope. The number of luminous x-ray sources, likely neutron star and black hole binary systems within the confines of M51, is unusually high for normal spiral or elliptical galaxies and suggests this cosmic whirlpool has experienced intense bursts of massive star formation. The bright cores of both galaxies, NGC 5194 and NGC 5195 (right and left respectively), also exhibit high-energy activity. In this false-color image where X-rays are depicted in purple, diffuse X-ray emission typically results from multi-million degree gas heated by supernova explosions.
NASA APOD 10-Jun-14
Arcturus (α Boo, α Boötis, Alpha Boötis) of the constellation Boötes is the brightest star in the northern celestial hemisphere. With a visual magnitude of −0.04, it is the fourth brightest star in the night sky, after −1.46 magnitude Sirius, −0.86 magnitude Canopus, and −0.27 magnitude Alpha Centauri. It is a relatively close star at only 36.7 light-years from Earth, and, together with Vega and Sirius, one of the most luminous stars in the Sun’s neighborhood.
Arcturus is a type K1.5 IIIpe orange giant star, with an absolute magnitude of −0.30. It has likely exhausted its hydrogen from the core and is currently in its active hydrogen shell burning phase. It will continue to expand before entering horizontal branch stage of its life cycle.
Imaging telescopes or lenses: 127 ED doublet f/9 (homemade)
Imaging cameras: Homemade Planet 640×480 Color
Mounts: Konus EQ3.2
Software: Star Tools, Corel Paint Shop Pro x2, Emil Kraaikamp’s AutoStakkert!
Dates: July 2, 2012
Author: Giuseppe Donatiello
AstroPhotography of the day by SPONLI 10 June 2014