King Cobra Cluster - M67


Scope: C8  f/2.8;  Location:  Del Mar  CA;  04 Apr. 2005; Camera: ToUcam SC3

Exposure: 16 x 48 sec and 16 x 16 sec with Orion Skyglo  and Baader IR Block  for Luminance exposures; 16 x 16 sec R,G,B exposures.

Processing: All exposures captured  in K3CCDTools 2. Alignment and stacking was done with Registax 3 and saved as FITs. LRGB channels were co-registered in IRIS. Luminance and Color channels were scaled and rough color balanced in IRIS.  The  luminance channel was constructed with the with the 48 sec exposure as the base exposure; the 16 sec exposure was used to reduce star size on the larger stars.  LRGB channels were resized to 800x600 prior to LRGB combine. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Color balancing and final touches were done in Photoshop (Blue halo subtraction and background noise subtraction). SGBNR (PixInsight LE) was used to smooth remaining background  on the final result. Final image size is approximately 800x600.

This image was a guided exposure. M67 is the cluster in the image. It is located in the constellation Cancer. M67 is one of the oldest known open clusters; many younger open clusters have predominantly blue stars, but M67 contains many red colored stars  North is up in this image.  This is a second image of this cluster, the original image can be seen in the Archives here. Horizontal FOV is about 30'. 

Image center is at Equatorial 2000: RA: 08h 51m 24s Dec: +1149'00"


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All images and content remain the property of Jim Thommes - copyright 2003, 2007

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