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Devin-M said:This was supposed to be my first attempt with the narrowband 6nm clip in oxygen filter. I was under the impression it would block all light pollution and moonlight. So I attempted to image NGC 7822 which is quite a large angular size nebula with the 300mm/4.5 + 6nm oxygen narrowband filter, 4x10 minute subs at 1600 iso. It should fill a large portion of the center of the full frame image.
It isn't really a good time of year to capture NGC 7822 since it starts out quite low near the northwestern horizon at sunset, and then just gets worse from there. You should have better luck for this target when it's closer to the zenith (i.e., higher in the sky). For example, in September it will pretty high in the sky around midnight, giving you many hours before and after for good imaging.
It also looks like you have some glare to contend with from that streetlight. Still, that might be manageable for targets higher in the sky. [Edit: you might consider setting up behind a barrier for the streetlamp right next to your house.]
And, all else being the same, you should have more luck pulling out nebulosity with Sii and Hα than with Oiii, at least for NGC 7822 (and well, most other emission nebula, for that matter -- Oiii is usually always the problematic one).
One website that's a godsend for finding good targets for the particular time of year is Telescopius (https://telescopius.com/) Not only does it provide local weather forecasts (if your region of the world supports it), but also has a wonderful tool for recommending targets based on preferred type and sky-location of target based on the time of the year. It's my new first stop place to go for choosing targets. With an account you can save your favorite targets to a list (to access later in the year) for easy access when choosing targets for the night.
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