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Tuesday, March 27, 2012

Veil Nebula, reprocessed with some new data

I found some forgotten data, from my hard, disk for the Veil Nebula. Image of this supernova remnant was originally published at 30. October 2011. I reprocessed the whole image with new data, here is the result.

Veil Nebula
Supernova remnant in constellation Cygnus

Image is in Natural color palette from the emission of ionized elements, 
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.

Note. The "noise" in the background is not a noise but countless stars!

Veil Nebula is a cloud of ionized gas and dust, leftovers from an exploded star. The star went off some 5000-8000 years ago at distance of about 1470 light years. This, relatively faint target, is difficult to image due to the large angular diameter, about three degrees, and a dense star field.
This is a second version of this object, older version can be seen Here

I have made a 3D-animation about the possible shapes of this SNR, it can be seen Here.

HST-palette, from the emission of ionized elements,
R=Sulfur, G=Hydrogen and B=Oxygen.

1:1 cropped image to show the resolution.
Not a bad one for the 200mm camera lens...

Technical details:

Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Levels, curves and color combine in PS CS3.

Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5 arcseconds/pixel
New exposures H-alpha 13x1200s,
S-II and O-III information are from an older image

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