Daily Archives: April 28, 2014

The Sun Online and solar activity. April 28, 2014

Six sunspot regions are visible at the front side of the solar disk.  All have a simple alpha or beta magnetic configuration. The background of the GOES Xray flux is at B-class level and no noteworthy flares were measured. A weak CME erupted towards the north, first visible in LASCO/C2 at 5:36 UT on 28 April. It can hardly be called a partial halo CME and does not seem to be Earth directed. C-class flaring activity can be expected for the next 48 hours. Solar wind speed is relatively stable with values between 300 to 350km/s. The magnitude of the interplanetary magnetic field was maximally 5 nT with a mainly negative Bz. Geomagnetic conditions were unsettled and are expected to remain as such. An isolated time slot of active
conditions is possible at arrival of a high speed stream related to the coronal hole that passed the central meridian early on 24 April.  

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 04/28/14
Time UT: 14:00
Exposure 1/500 sec.

With SPONLI Space is getting closer


Time Lapse of a Total Lunar Eclipse 

Video Credit: Adam Block, Mt. Lemmon SkyCenter, U. Arizona

Why would a bright full Moon suddenly become dark? Because it entered the shadow of the Earth. Almost two weeks ago this exact event happened as the Moon underwent a total lunar eclipse. That eclipse, visible from the half of the Earth then facing the Moon, was captured in numerous spectacular photographs and is depicted in the above time lapse video covering about an hour. The above video, recorded from Mt. Lemmon Sky Center in Arizona, USA, keeps the Earth shadow centered and shows the Moon moving through it from west to east. The temporarily good alignment between Earth, Moon, and Sun will show itself againtomorrow – precisely half a moon-th (month) later – when part of the Earth will pass through part of the new Moon’s shadow.

NASA APOD 28-Apr-2014

The Spider and the Fly in Auriga

b09548a3d10dc8e5a1adae068ff0b81b.1824x0_q100_watermarkBright clusters and nebulae abound in the ancient northern constellation of Auriga.
An imaginative eye toward the expansive IC 417 and diminutive NGC 1931 suggests a cosmic spider and fly. About 10,000 light-years distant, both represent young, open star clusters formed in interstellar clouds and still embedded in glowing hydrogen gas. For scale, the more compact NGC 1931 is about 10 light-years across.

Imaging telescopes or lenses: Williams Optics Megrez 72
Imaging cameras: Starlight Xpress SXVR-H9
Mounts: Sky-Watcher HEQ5 PRO
Guiding telescopes or lenses: Williams Optics Megrez 72
Guiding cameras: Starlight Xpress CoStar
Focal reducers: William Optics FF/FR VI
Software: PixInsight 1.8, PHD guiding, Nebulosity 3, EQMac
Filters: Astrodon Ha 5nm
Accessories: Starlight Xpress Mini Filter wheel
Dates: Feb. 16, 2014, Feb. 21, 2014
Frames: Astrodon Ha 5nm: 18×1800″ -20C
Integration: 9.0 hours

Author: Epicycle

AstroPhotography of the day by SPONLI
28 April 2014