I've accumulated a bit more signal from the green zone and added it to what I captured from the city. In theory, I increased the SNR by 2.5 times (based on the number of added frames). The filter I'm using is far from ideally compatible with such fast optics (recommended value f5), which makes it impossible to achieve focus in both the red and green/blue channels simultaneously. Giving priority to the red channel, I found a somewhat middle ground for both passbands. So, can't do without blur.
Поднакопил еще немного сигнала из зеленой зоны, добавил к тому, что отснял из города. В теории увеличил SNR в 2.5 раза (исходя из количества добавленных кадров). Используемый фильтр конечно далеко ...
I agree, blur does introduce a lot of noise if there isn't enough integration time, which then has to be smoothed out. But that's what blur is all about—just a bit of fun, really.
Yes, I understand. The Soap Bubble Nebula (PN G075.5+01.7) isn't visible even on the original stacked image. Additionally, my oxygen filter data is out of focus, so only the brightest details in it have come through.
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