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The Eagle nebula - M16 (HαOIIIHβ Narrowband)
 
© Mariusz Goralski

MarsG76
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The Eagle nebula (M16/NGC6611) in the constellation Serpens exposed through narrowband filters at Hα, OIII and Hβ wavelengths to emulate natural colors as those narrowband wavelengths are closely corresponding to the RGB wide band.
This image was taken with a 8" SCT (at the native 2032mm focal length), with a QHY268M camera and tracked using a "hypertuned" CGEM mount.

The total exposure time of this image was 12 hours and 45 minutes.
Exposures: Hα:17x600s, OIII:17x900s, Hβ:17x1200s @ HCG:62/OFS:25

The color channel assignments are  HAlpha, OIII and HBeta as RGB.

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© Mariusz Goralski
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