Here's M43 taken with STC-7 using 9 images for each RGB channel. The color balance was derived from a G2V star which resulted in channel exposure ratios of R=1.0, G=1.557 B=1.370. The times used were R=45s, G=70s, B=60s. RGB channels were combined without adjusting the color gains, simply all set to unity. The 1:1 binned image was reduced to 67%. Regards All, Tim