Globular Cluster in Canes Venatici M3

Full size tiff here

RGB 2100:1500:2400 sec in 300 sec subframes. Autoguided on 3/3-6/08.

Televue NP-101 and SXV-H9 camera mounted on a G-11.

Processing: Combined in CCDStack, processed in Photoshop CS2 and with Noel Carboni's Astronomy Tools.

I used four different layers to build up the core by progressively boosting the levels from the core outward. By using hide-all layer mask, I could control just what I wanted to show from each layer.