Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7023  ·  VdB139
NGC 7023 Iris Nebula, Michael Timm
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NGC 7023 Iris Nebula

NGC 7023 Iris Nebula, Michael Timm
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NGC 7023 Iris Nebula

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Description

NGC 7023 is a big challenge for me, because the reflection nebula is very faint and dark. So i tried a lot of images with low exposures and i am happy with the result. One can see the different colors and a bit of the darker parts of the nebula. Counterpart of using a lot lights is that you stack a lot of sensor noise into the image, which can be seen in the brighter parts of the nebula. I only used 455 out of 900 frames stacking with Siril. I will add a second version stacked with PI to compare the result.

Edit: Whatever i do in PI, the ImageIntegration Process wont stack more pictures than Siril (rather less). I tried different settinges but it didnt help a lot. So there will be no second version stacked with PI.

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NGC 7023 Iris Nebula, Michael Timm