California Nebula HaRGB

California Nebula HaRGB



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

Submit a Comment

Your email address will not be published. Required fields are marked *

The reCAPTCHA verification period has expired. Please reload the page.