Gradient issue
I'd like to ask for some advice on editing and/or data acquisition (if that's the issue).
I went for a part of the Veil Nebula and I'm struggling with edits, I'm not happy with the results.
Here are two edits on same image:
- https://app.astrobin.com/i/ytn8vz?r=B - final version
- https://app.astrobin.com/i/ytn8vz?r=C - before masks and other editing, presenting heavy red / green gradients.
My issue is with the heavy gradients seen in the C revision. I was able to sort of edit those out, but I loose a lot of the data this way unfortunately. There's so much more details visible details in the one before extra editing, before trying to get rid of those gradients and I'm wondering how can I do this better.
Acquisition details can be seen in the above links, but:
- 63 x 300s with Optolong L-Ultimate
- dark master from about 50 frames - taken a couple of weeks ago
- flat master from about 50 frames + 50 dark flats - taken a week ago, with same filter of course
Does anyone have any opinion or recommendation on this? Maybe flats are to blame because they did not come from the same session? Longer integration time? Shoot not when moon almost full (obvious, but then again, I used that filter...)?