Whirlpool Galaxy - M51


Scope: C8  f/5, Location: Dos Picos Park, Ramona CA,   9 Apr. 2004  Camera: ToUcam SC3

Exposure: 16 x 80 sec Luminance exposures with IR block, 10 x 60 sec RGB exposures.

Processing: Images were captured in K3CCDTools. Aligned/stacked in Registax and saved as FITS. minimal wavelet processing on the Luminance exposure. Luminance and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart. Two  Luminance channels  (80 sec and 80 sec wavelet) were combined in Photoshop. Luminance and Color FITS were combined in Photoshop with Luminance Layering. Color balancing and final touches in Photoshop. SGBNR was used to smooth background noise on the Luminance channel and the final result.

This image was guided for all exposures. This image replaces an earlier image that can be seen in the Archives here Horizontal FOV is 16'


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