Thanks for the comments. The DSLR approach sure is rewarding compared to RGB webcam so far.
The single frame exposure details were: 90 sec iso 1600 for Eta Car. and 150 sec iso 400 for Omega Cen.
Personally I was more excited about M42 than the other two. Here is the first of the exposures (single frame) I took with the new gear (no processing except to reduce the jpeg to <200kb). Iso 800/120 secs. You can imagine what I was thinking when this appeared on the laptop screen.
Peter
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