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M16, the Eagle Nebula 7,000 light years away. The star cluster is only about 5.5 million years old and star formation is still active, especially near the dark "elephant trunks“.


Image info

Telescope:  Skywatcher 8" f/5 Newtonian

Focus:  Prime focus

Camera:  SAC7B, uncooled

Exposure:  41 x 25s & 39 x 20s

Date:  16th July 2003 and 8th August 2002

Processing:  Older set acquired in Astrovideo as FITS.  Stacked, and colour enhanced in Iris.  Noise reduction using wavelets in Iris and in SGBNR.

July 2003 set acquired and processed as described on this site, ie YRGB.  Overall luminosity image was Y of new set + G of old set.


The 2003 imaging session was cut short by cloud and only 41 usable frames resulted.  I decided to combine these with an old set taken a year ago.  The increased no. of frames together with the new technique of removing banding enabled more detail and dimmer stars to be shown on the final image.


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