Daily Archives: July 15, 2014

The Sun Online and solar activity. July 15, 2014

Only minor C-class flares in past 24 hours. The largest one came from Catania 9 (NOAA AR 2109), a class C1.2. No large flares are expected. A sector boundary crossing on July 14 around 18:30 UT created some unsettled conditions at planetary levels (Kp=3) and active periods at Dourbes (K=4). Geomagnetic conditions are quiet and expected to remain so.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 07/15/14
Time UT: 16:00
Exposure 1/500 sec.

Observatory Sponli


A Blue Bridge of Stars between Cluster Galaxies 

Image Credit: NASA, ESA, G. Tremblay (ESO) et al.;
Acknowledgment: Hubble Heritage Team (STScI/AURA) – ESA/Hubble Collaboration

Why is there a blue bridge of stars across the center of this galaxy cluster? First and foremost the cluster, designated SDSS J1531+3414, contains many large yellow elliptical galaxies. The cluster’s center, aspictured above by the Hubble Space Telescope, is surrounded by many unusual, thin, and curving blue filaments that are actually galaxies far in the distance whose images have become magnified and elongated by the gravitational lens effect of the massive cluster. More unusual, however, is a squiggly blue filament near the two large elliptical galaxies at the cluster center. Close inspection of the filament indicates that it is most likely a bridge created by tidal effects between the two merging central elliptical galaxies rather than a background galaxy with an image distorted by gravitational lensing. The knots in the bridge are condensation regions that glow blue from the light of massive young stars. The central cluster region will likely undergo continued study as its uniqueness makes it an interesting laboratory of star formation.

APOD NASA 15-Jul-14

Butterfly Nebula or IC 1318

This is just a part of a huge nebulous region the Sadr region near the bright star Sadr in the constellation of Cygnus.  The Sadr region is one of the surrounding nebulous regions; others include the Butterfly Nebula and the Crescent Nebula. It contains many dark nebulae in addition to the emission diffuse nebulae.
Butterfly Nebula (aka The Gamma Cygni ) is more than 3000 light years from us and it consists of the various pink patches.
Imaging telescopes or lenses: Meade LXD 55 SN6
Imaging cameras: Canon EOS 450D modified
Mounts: Skywatcher NEQ6 Pro GoTo
Guiding telescopes or lenses: Skywatcher Finderscope 9×50
Guiding cameras: QHY5
Filters: Astronomik 12nm H-Alpha CCD
Dates: Sept. 1, 2013
Frames: 27×300″
Integration: 2.2 hours

Author: Pedro Asunción
AstroPhotography of the day by SPONLI 15 July 2014