The M20 nebula in the constellation Sagittarius captured in red,
green and blue filters and composed into real-color image. Total
exposure time is 10 hours.
What's more, the CielAustral group (J. C. Canonne, N. Outters, P.
Bernhard, D. Chaplain, L. Bourgon), as usual, acquired also
narrow-band images in Hα, OIII and SII
spectral lines in addition to natural-color data. Total exposure time
through narrow-band filters exceeded 70 hours. The image below shows
the M20 in somewhat unusual combination of real color data with
The images were captured with C4-16000 CMOS camera on the PlaneWave CDK610