NGC 6781 28-29 July 2006, Lure Mountain, 1600-meter elevation, inside the dome, Celestron 14 (14" SCT) + Celestron focal reducer leading to 1.96 meter i.e. @f/5.5, SBIG ST-10XME CCD camera + CFW-8 filter wheel with Astrodon filters, AO-7 driven by Equinox Image, 165-minute quadcolor image (L = 25 x 3 minute, R, G and B = 5 x 6 minutes), weak northern wind, transparency good, temperature inside dome stable at +15 °C, humidity medium, seeing rather good (FWHM between 2.1" to 2.5" for each of the 25 3-minute luminance raw images)

SBIG control : Equinox Image, Image processing software : TINA, The log function applied to the final image makes the stars somewhat "fat" but better shows the faintest areas of the nebula

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