Daily Archives: April 11, 2014

The Sun Online and solar activity. April 11, 2014

Solar activity has risen significantly during the past 24 hours and seven C-class flares were produced.
Most of the flares were originating from the East limb near 15 degrees south. At that latitude, several regions are turning onto the visible side of the solar disk, including Catania sunspot region 24 (NOAA AR 2035). The strongest flare was a C9.4 flare peaking at 11:24 UT on April 11 from sunspot region 24.
Further analysis will be needed to determine whether other solar phenomena were associated with this event. The slow partial halo CME with first measurement in LASCO at 0h48 UT of April 10, at most a shock can be expected to arrive. More C-class flares are expected from the active regions that are currently rotating around the East limb. M-class flares are also likely during the next 48 hours. An X-class flare is not excluded, but is not likely. Interplanetary magnetic field measured by ACE currently is variable with a magnitude ranging from 0 to 9 nT and a Bz fluctuating between -5 and +5 nT. Bz is currently negative, resulting in unsettled local geomagnetic conditions (local K=3 at Dourbes). Solar wind speed is around 380 km/s. Magnetic conditions are expected to be quiet to unsettled. At the arrival of the CH high speed stream (from April 12 on) active conditions might be observed.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 04/11/14
Time UT: 14:00
Exposure 1/500 sec.

With SPONLI Space is getting closer


Mars near Opposition


Image Credit & Copyright: Fabio Carvalho and Gabriela Carvalho

Tonight Mars is between opposition (April 8) and closest approach (April 14) looping through the constellation Virgo opposite the Sun in the night sky. That makes it prime season for telescopic views of the the Red Planet, like this one from April 3rd. The clear, sharp image was captured with a high-speed digital camera and 16-inch diameter telescope from Assis, Brazil, Planet Earth. Mars’ north polar cap is at the top left. Also visible are whitish orographic clouds – water vapor clouds condensing in the cold atmosphere above the peaks of Mars’ towering volcanos. The exact dates of closest approach and opposition are slightly different because of the planet’s elliptical orbit. Still, get your telescope out on the night of closest approach (April 14/15) and you can view both Mars and a total eclipse of the Moon. Mars will be about 1/100th the angular size of the Moon.

NASA APOD 11-April-2014

Reflection nebula M78

0b49f1169fd3cf655a566290df0fd602.1824x0_q100_watermark_watermark_opacity-15_watermark_position-1_watermark_text-Copyright Michael Miller

The nebula Messier 78 (also known as M 78 or NGC 2068) is a reflection nebula in the constellation Orion.  M78 is the brightest diffuse reflection nebula of a group of nebulae that include NGC 2064, NGC 2067 and NGC 2071. This group belongs to the Orion Molecular Cloud Complex and is about 1,600 light years distant from Earth. M78 is easily found in smalltelescopes as a hazy patch and involves two stars of 10th magnitude. These two stars, HD 38563A and HD 38563B, are responsible for making the cloud of dust in M78 visible by reflecting their light.

Imaging telescopes or lenses: Stellarvue SV 152
Imaging cameras: Apogee U16M
Mounts: Paramount MX
Software: DC-3 Dreams ACP, PixInsight PixInsinght 1.8 RC7, Maxim DL, photoshop
Filters: Astrodon E-series LRGB
Dates: Nov. 2, 2013
Locations: New Mexico Skies
Frames: 28×600″
Integration: 4.7 hours

Author: Mike Miller

AstroPhotography of the day by SPONLI
11 April 2014