California Nebula HaRGB

California Nebula HaRGB

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Description

3x30 min 6 nm Astrodon H-a, 3x10 min Astrodon I-Series RGB all unbinned with STL11000XM at -25C. Calibrated with darks, sky flats and biases using CCDStack. Data acquisition by CCDAutoPilot2.53.  RGB Tiff and H-a registered in Registar. Final processing in Photoshop CS. Gradient removal with GradXTerminate in PCSC.    Here is the H-a luminance:         
Image Date: 11/23/2005
Details: Exposure Time: 3 hours total; 1.5 hrs H-a, 30 min R,G,B
Camera: SBIG  STL11000
Telescope: Takahashi  FSQ106N
Mount: Software Bisque  Paramount ME

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