M27 Tricolor (LRGB) - The Dumbbell Nebula
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Five, two-minute exposures each, for Red, Green, and Blue, binned, at F6.3,
then "stacked" together. The 'Luminance' (White) image was from a grayscale
image of the same object, taken the week before, unbinned.
Five, two-minute exposures each, for Red, Green, and Blue, binned, at F6.3,
then "stacked" together. The 'Luminance' image was also five, two minute
exposures, unbinned. This image was acquired a week after the upper image.