M57 "Ring Nebula" 07-25-00
W-CYM, Each 10 exp @ 45sec
f/16 (f/8 scope with 2x barlow)

NGC6543 "Cat's eye nebula" 07-23-00; f/16 (f/8 scope with 2x barlow)
WCYM, Wht 30 exp at 45 sec .. C-Y-M each 15 exp at 40 sec;
Left to right (top/bottom) Original wcym, cropped and resampled 2X, cropped and resampled 3x with colors streached to bring out details.






M1 -CYM color composite 01/29/00

















M 20, re-processed using the DDP method
30 exp @ 20 sec

Same camera (CB245), same object (M27);
greatly improved software [CBWinCam and AIP4win],
but only slightly improved technique.

NGC6826 07-24-00; f/16 (f/8 scope with 2x barlow)
WCYM, Wht 30 exp at 40 sec; C, Y, & M each 20 exp at 40 sec;


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