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Saturday, November 17, 2012
Filaments in the Western Veil
Supernova remnant in Cygnus
Image is in visual spectrum, composed from H-a and O-III narrowband channels.
This is a third detail image from the Veil Nebula supernova remnant from this Autumn season.
The Veil Nebula locates in constellation Cygnus at distance of about 1400 light years. The angular size of the image is close to size of the full Moon. The bright star at upper right corner is 52 Cygni, it's a foreground star and unrelated to the supernova remnant.
Area of interest is marked as a white rectangle.
Image in HST-palette
Colors for this HST-palette image are borrowed from a wider field one, image can be seen here:
An animated image shows the difference between ionized Oxygen and Hydrogen
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Meade LX200 GPS 12" @ f5
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 8Hz
Image Scale, ~0,8 arc-seconds/pixel
15 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 5h
6 x 1200s exposures for the O-III, emission of ionized Oxygen = 2h
4 x 1200s exposures for the S-II, emission of ionized Sulfur = 1h 20min.