Ok, I have 2 favourites to post
First one
I had just received my new astro cam (1600) and filters, and my friend Simon was hosting a star party at his place, so I think the day or 2 before I actually got the filters and filter wheel! So this was sort of the first light for me... I arrived on the beautiful property, with a few other people imaging there, with little chickens and dogs and everything running around! So I set up, we eat, and back outside, to be met with possibly the most beautiful dark skies I had seen! I began my first LRGB sequence, I had some trouble with focus but eventually worked that out, started lum, blue subs all good, green ok, at this point it was maybe 12 am, I was sitting with Simon freezing my butt off! We saw some beautiful meteors and things, also observing with some binos, great fun! Then my mount decides to slew randomly, I was super mad because I only had one night to get this pic! Well I get that fixed after a lot of time, start capturing red frames, and then the dew rolled in, but I was happy to have gotten enough data for an image. The next day I open the lum frames, and stretch them... WOW! They were spectacular! When I got home I eventually processed them, which was fun, and at the time I lived the pic, now I look back at it and while it's not the best technically at all, I love the story behind it as that was one of the best imaging sessions I had had. I want to revisit that neb some day, only a dark sky does it justice!
The next one is probably my technical favourite image, but it doesn't have an interesting backstory , but I feel the colour is unique and the stars are mostly under control. It's the statue of liberty (NGC 3324 I think)
Thanks Alex for a wonderful thread, happy Easter!