Daily Archives: April 4, 2014

Along the Western Veil

Image Processing: Oliver Czernetz – Data: Digitized Sky Survey (POSS-II)

 Delicate in appearance, these filaments of shocked, glowing gas, draped in planet Earth’s sky toward the constellation of Cygnus, make up the western part of the Veil Nebula. The Veil Nebula itself is a largesupernova remnant, an expanding cloud born of the death explosion of a massive star. Light from the original supernova explosion likely reached Earth over 5,000 years ago. Blasted out in the cataclysmic event, the interstellar shock wave plows through space sweeping up and exciting interstellar material. The glowing filaments are really more like long ripples in a sheet seen almost edge on, remarkably well separated into atomic hydrogen (red) and oxygen (blue-green) gas. Also known as the Cygnus Loop, the Veil Nebula now spans nearly 3 degrees or about 6 times the diameter of the full Moon. While that translates to over 70 light-years at its estimated distance of 1,500 light-years, this wide image of the western portion spans about half that distance. Brighter parts of the western Veil are recognized as separate nebulae, including The Witch’s Broom (NGC 6960) along the top of this view and Pickering’s Triangle (NGC 6979) below and right of center.

NASA APOD 04-Apr-14

The Pelican Nebula

bd49a7794a83dadc6dd91b5e20e9e112.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Samuli VuorinenThe Pelican Nebula (also known as IC 5070 and IC 5067) is an H II region associated with the North America Nebula in the constellation Cygnus. The gaseous contortions of this emission nebula bear a resemblance to a pelican, giving rise to its name. The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbour, the North America Nebula, by a molecular cloud filled with dark dust.

Imaging telescopes or lenses: Boren-Simon PowerNewt 8
Imaging cameras: Atik 460EX
Mounts: Sky-Watcher EQ-6 Pro
Guiding telescopes or lenses: Teleskop-Service Finderscope
Guiding cameras: QHYCCD QHY5
Focal reducers: ASA 2″ x 0,73 Corrector/Reducer 2KORRR
Software: PixInsight, Maxim DL, AstroTortilla
Filters: Astronomik SII 12nm, OIII 12nm, Astronomik H-alpha 12nm
Accessories: Lunatico Astronomia Seletek Armadillo
Dates: Aug. 23, 2013
Locations: Komakallio
Astronomik H-alpha 12nm: 5×300″ -10C bin 1×1
OIII 12nm: 5×300″ -10C bin 1×1
Astronomik SII 12nm: 5×300″ -10C bin 1×1
Integration: 1.2 hours
Flats: ~20
Bias: ~500

Author: Samuli Vuorinen

AstroPhotography of the day by SPONLI
4 Abril 2014