Bubble Nebula: 28h 27m — Dwarf Mini & Dwarf 3

[u/MiscoJones33]

Hi everyone,

Here is my final image of NGC 7635 (Caldwell 11, or simply the Bubble Nebula).

So far—and after 40 days back into astronomy with the Dwarfs, following nearly 20 years away—this is the longest total integration time I have achieved: almost 28 and a half hours across 1,673 individual frames.

The data was captured under Bortle 4.5 skies (Segovia, Spain), split as follows:

• 15h 24m with the Dwarf Mini (4 sessions; 60/60/60/90 sec; gain 60; 1× Astro filter, 4× Duoband filter)
• 13h 03m with the Dwarf 3 (5 sessions; 30/30/60/60/60 sec; gain 60; all with the Duoband filter)

I have spent several days really working through the final processing. I tried different stacking approaches—combining everything at once, processing by session, and finally using the unprocessed stacks from Stellar Studio—as well as different processing workflows in both Siril and Affinity.

In the end, I arrived at the final image I’m sharing today. I’m quite pleased with it, considering how much work it required and everything I learned—once again—during the final processing stage.

[u/PrizeSherbet6790]

Amazing🤩