Thanks all for attending and special thanks to Grigory for suggesting the topic.
Here are some links for further reading on some of the stuff I showed:
J-P Metsavainio's Tone Mapping Technique: http://www.skypixels.at/downloads/ade/Tone_Mapping.pdf Replicating Photoshop Blend Modes in PixInsight: http://trappedphotons.com/files/Presentations/Advanced%20PixInsight%20PixelMath%20Operations.pdf
The next Sunday Chat will take place on Sunday, December 5th at the same time (19:00 UTC), and the topic will be discussion around combining multiple nights of images, including pros and cons of different approaches.