In total I stacked 267 images of 10 seconds exposure to create the luminance channel of this final mosaic. This luminance channel was shot with the B/W webcam.

The color information is not exposed nearly as long; I only used 9 x 30 seconds + 33 x 15 seconds exposures, using the modified OSC webcam.

equipment used
Toucam Pro II (840k) webcam - SC4 with ICX414AQ ccd
Meade Starfinder 10
Philips Vesta Pro 680k webcam - SC3 with b/w ICX424AL-E ccd