IC 1848 in Cassiopeia


Scope: Megrez II  f/2.6 Location: Laguna Mountains CA;   17 Sept. 2004  Camera: ToUcam SC3

Exposure: 12 x 36 sec and 16 x 10 sec Luminance exposures with Baader IR Block Filter, 6  x 270 sec H-Alpha exposure; 12 x 24 sec RGB

Processing: Images were captured in K3CCDTools. Aligned/stacked in Registax and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart. The Nebulosity was extracted from HA and then combined with the 36 sec IR  for Luminance in Photoshop - The 10 sec IR was used to minimize some star bloating. In addition, since some of the brighter stars were still somewhat large, a Photoshop minimum filter was selectively applied. Extracted nebula from HA was used to provide false color for the nebula in the  Red channel. Luminance and Color FITS were combined in Photoshop with Luminance Layering. Color balancing and final touches in Photoshop. SGBNR (PixInsight LE) was used to smooth background noise on  Luminance channel as well as the final result. Image was resized to 800 x 600.

This image was taken at a dark site with minimal light pollution. This is a guided image. The upper left corner shows parts of IC 1871 / Collinder 33 Emission nebula which is the subject of a different image . Horizontal FOV is about 80'


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