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Monday, September 24, 2012

First project, IC 1340, of Autumn 2012 continues

The weather hasn't been on my side. At four nights, I have managed to collect about three two hours set of Hydrogen alpha light exposures. Now there is more details and less noise, than in previous two hours version.

I'll shoot other channels, ionized Oxygen and Sulfur, for the color image, as soon as the weather cooperates again.

IC 1340, Part of the Eastern Veil Nebula in Cygnus
RA: 20h56m 45.8s DE:+31 degrees07' 17"

Detail of Eastern part of the Veil Nebula in H-a light only.

A closeup

IC 1340 is part of the Veil Nebula, a supernova remnant in constellation Cygnus at distance of about 1470 light years. This is one of the more luminous areas in this SNR.  Image is B&W, since it shows only a light emitted by ionized Hydrogen. The shock front formed by the material ejected from giant explosion, the super nova, can be seen in this image.

There is only two hours of exposures integrated in this image. I'll need least three more hours for H-alpha and about a same amount for O-III and S-II to make a color composition out of this target.

Orientation image

Area of interest is marked as a white rectangle in this older wide field image above.

Technical details:

Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels and curves in PS CS3.

Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera
Image Scale, ~0,8 arc-seconds/pixel
16 x 1200s exposures for H-alpha emission = 5h 20min.

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