Sky has cleared, all up and running but now realised I've got to re-do all of my NINA templates for mono.

Wow, single 60s Ha on the Rosette with a denoise and stretch.

Not sure why BSky has introduced this pattern in the pic

That’s awesome! Definitely looking forward to next week now

any idea why BSky introduces this pattern in the pic thats not seen anywhere else?

I’m not seeing an obvious pattern on my phone. I’ve not looked that closely because I’ve traveled from the south coast back to Scotland today!

really odd pattern, just screen grabbed and saved in paint and reposted and it's ok, maybe BSky doesn't like greyscale jpegs.

I just grabbed both images, did a Seti Astro statistical stretch on each and then differenced in PixInsight. No obvious pattern - mostly minor differences to be expected. I wonder if it's the screen display settings?

it only shows up when I post to BSky. I used the SA statistical stretch and NoiseX on the raw sub to create the jpeg. Nothing shows in PI or any pic viewer. Just wondered if BSky doesn't like greyscale jpegs. Here is a zoomed in grab from Bsky. Can you see the grid like pattern?

I can see it on that screen grab. I can't see it in the same area on the image I grabbed from your original post. I used the 5 stars close to the denser Ha region to locate your zoomed in grab, and I definitely don't see it. Curious!

Not on my iPad