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Thursday, November 08, 2012

The California nebula in Perseus

Image 1: NGC1499 in Perseus

This is the celestial object NGC1499, the so called California nebula in the Perseus constellation. Since this nebula is larger than the field of view my camera covered, making a mosaic was inevitable to achieve high resolution and depth. This mosaic shown above consists of two parts with 6x900 seconds and 4x900 seconds sub exposures each. The telescope had a focal length of 660mm at f/5.2. A color camera QHY8L (with 7.8mu pixels) was used to capture it. Compared to other similar photos in the net, the high depth of this image is obvious. It is a pure RGB image, not a narrowband composition, so will notice many faint stars in it, being de facto invisible in most narrowband approaches.

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