Daily Archives: January 9, 2014

The Tadpoles of IC 410


Image Credit & Copyright: Martin Pugh

This telescopic close-up shows off the otherwise faint emission nebula IC 410 in striking false-colors. It also features two remarkable inhabitants of the cosmic pond of gas and dust below and right of center, the tadpoles of IC 410. The picture is a composite of images taken through narrow band filters. The narrow band image data traces atoms in the nebula, with emission from sulfur atoms in red, hydrogen atoms in green, and oxygen in blue. Partly obscured by foreground dust, the nebula itself surrounds NGC 1893, a young galactic cluster of stars that energizes the glowing gas. Composed of denser cooler gas and dust the tadpoles are around 10 light-years long, potentially sites of ongoing star formation. Sculpted by wind and radiation from the cluster stars, their tails trail away from the cluster’s central region. IC 410 lies some 12,000 light-years away, toward the constellation Auriga.

NASA APOD 09-Jan-14 

IC1396: Elephant Trunk Nebula


The Elephant’s Trunk nebula is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth. The piece of the nebula shown here is the dark, dense globule IC 1396A; it is commonly called the Elephant’s Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star that is just to the west of IC 1396A. (In the Figure above, the massive star is just to the left of the edge of the image.) The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star’s harsh ultraviolet rays.

Imaging telescopes or lenses: Takahashi FSQ85-ED, Sky-Watcher 80ED
Imaging cameras: QSI 583 wsg, Starlight Xpress SXVH9
Mounts: Losmandy G11 , Sky-Watcher NEQ6
Guiding telescopes or lenses: Takahashi FSQ85-ED, Sky-Watcher 80ED
Guiding cameras: The Imaging Source DMK21AU618.AS, QSI 583 wsg
Filters: Astrodon OIII 5nm, Astrodon SII 5nm, Astrodon H-alpha 5nm, Custom Scientific H-Alpha 4.5nm
Dates: June 19, 2011
Custom Scientific H-Alpha 4.5nm: 6×1800″ bin 1×1
Astrodon H-alpha 5nm: 6×1800″ bin 1×1
Astrodon OIII 5nm: 7×1800″ bin 1×1
Astrodon SII 5nm: 7×1800″ bin 1×1
Integration: 13.0 hours
Autor: Andre van der Hoeven, Daniel Verloop

AstroPhotography of the day by SPONLI

9 January 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.