I’ve pushed an update to the post with more implementation details, and I also cleaned up the shader code to make it easier to read/follow. If anything’s still unclear, feel free to comment on the post and I’ll try to clarify.

I’m the author of this shader, and I just stumbled across this thread. I just wanted to say thank you for all your feedback! If you have any questions, suggestions, or ideas, feel free to share them on my page.

To the best of my knowledge, Scene Optimiser was turned off for the shot I discussed in my write-up. That said, a great point was raised, and I’d like to address it thoroughly. I’ll take some comparison photos with Scene Optimiser both on and off and update the blog post as soon as I get the chance.

The goal wasn’t to run a detailed, scientific comparison, but simply to do a quick check on the spot. The post is really aimed at people who just want to snap some fun photos of the Moon, not folks doing serious astrophotography.

Do feel free to leave your comments in my page, I appreciate everyone's input.