Hello everyone - next off the processing line is M13.
Got a bit to say about this, so bear with me.
When I drilled down to the core, this single green star stood out like a sore thumb. The colour data is properly calibrated, and this star is perfectly formed, but why it is green is beyond me (I dont think this is Barnard 29)
So:
Two versions of the image linked below:
The first is how I processed the image before I spotted this green alien.
http://www.martinpughastrophotograph.../M13LRGBv2.jpg
Revealing this star in a fully stretched/processed image is very difficult, so I reprocessed the core and blended it into this second version.
http://www.martinpughastrophotograph.../M13LRGBv1.jpg
To see the green star in all its glory, click
here:
Also in the image at lower right is NGC 6207 - the owner of SN 2004A, but no longer visible in this image.
cheers
Martin