Scope: ST80 f/2.5 Location: Culp Valley, Anza Borrego Desert, CA 6/26/2003 Camera: ToUcam SC3
Exposure: 20 x 20 sec IR filter, 8 x 120 sec H-Alpha filter, 16 x 12 sec each RGB filter.
Processing: Captured aligned and stacked in K3CCDTools in with IR, HA,R,G,B saved as FITs. Luminance was a combination of IR and HA, Red was a combination of HA and Red. LRGB masters were registered and combined in Astroart. Some Lowpass filtering was applied followed by un-sharp mask on the Luminance frame. LRGB result was saved as a BMP. Background smoothed with SGBNR and minor touch up in Photoshop.
This image was taken in Culp valley in an all night session (same night I did the North American Nebula Mosaic). I regret that the image is not centered well. The fault for this is astronomical database accuracy. The program I was using had the nebula center shifted East about 12 minutes. Unfortunately, since I did not do the HA first to see the error, the object is off center. Horizontal FOV is 90'