The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded some 5,000 to 8,000 years ago, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full moon). The distance to the nebula is not precisely known, but Far Ultraviolet Spectroscopic Explorer (FUSE) data supports a distance of about 1,470 light-years.
Imaging cameras: Canon EOS 550D Modified
Software: Stark Labs Nebulosity 3.1.0
Accessories: Lacerta MGEN2 with 9×50, Baader Coma Corrector MPCC Mark III
Dates: Oct. 28, 2014
Integration: 4.2 hours
Avg. Moon age: 4.09 days
Avg. Moon phase: 17.80%
RA center: 311.591 degrees
DEC center: 30.704 degrees
Pixel scale: 2.271 arcsec/pixel
Orientation: 110.413 degrees
Field radius: 0.743 degrees
Locations: Pilisszentkereszt, Pilisszentkereszt, Hungary
Author: Csoknyai Attila
SPONLI is a project about astrophotography, for amateur astronomers.
Scope: FLT110 apo & F/F type4 @ f/5.6
Camera: canon 40D modified
Mount: NEQ6 pro with autoguider
Exposure: 12*5min iso 1000
Autor: Mohammad Nouroozi
The Lagoon Nebula (catalogued as Messier 8 or M8, and as NGC 6523) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as an H II region.
The Lagoon Nebula was discovered by Giovanni Hodierna before 1654 and is one of only two star-forming nebulae faintly visible to the naked eye from mid-northern latitudes. Seen with binoculars, it appears as a distinct oval cloudlike patch with a definite core. A fragile star cluster appears superimposed on it.
AstroPhotography of the day by SPONLI
December 04, 2013
We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.
Credit: Hubble Legacy Archive, NASA, ESA – Processing: Judy Schmidt
Are stars better appreciated for their art after they die? Actually, stars usually create their most artistic displays as
they die. In the case of low-mass stars like our Sun and M2-9 pictured above, the stars transform themselves from normal stars to white dwarfs by casting off their outer gaseous envelopes. The expended gas frequently forms an impressive display called a planetary nebula that fades gradually over thousand of years. M2-9, a butterfly planetary nebula 2100 light-years away shown in representative colors, has wings that tell a strange but incomplete tale. In the center, two stars orbit inside a gaseous disk 10 times the orbit of Pluto. The expelled envelope of the dying star breaks out from the disk creating the bipolar appearance. Much remains unknown about the physical processes that cause planetary nebulae.
Sample images of our first remote users
Dark Nebula B85 in Sagittarius
Across the face of the Trifid nebula are a set of dark bands dividing the nebula into four parts, very dark and distinct against the emission nebula background, unable to see any trace beyond the nebula
14 of July 2013