ngc6992 eastern veil nebula

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ngc 6992 eastern veil nebula

I captured 50 – 5 minute subframes of each Ha and Oiii. I also captured some Sii data, but ran into cloudy weather and decided to come back to a SHO version later.

I wanted to try the red and blue version I have seen frequently. This version typically only uses Ha and Oiii and maps it as a bi-color image as follows: Red=Ha, Green=Oiii, Blue=Oiii (HOO). This is exactly what i have done here as a first draft. You can see the stacked Ha and Oiii data below:

Below, you can see the bi-color results. I pushed version 1 of the bi-color image too far. The colors are over the top, but stand out. I didn’t really know how deconvolution worked and I applied it at the end didn’t adjust for the dark rings that it created.

I started over with version 2 after researching how deconvolution works and I think the image does have more detail and no dark rings. This tutorial by Richard Bloch was very helpful for me to experiment with deconvolution in PixInsight:

I’m still not sure how far to push the star removal. I prefer the more natural version 2 even though I do like a sharper black and reduced star background some folks achieve. I’m sure i’ll come back to this one again.

imaging cameraZWO ASI 1600MM Pro
guide cameraZWO ASI290mm Mini
mountSkywatcher EQ6-R pro
telescopeExplore Scientific ED102 APO
exposure settings300s
gain 139
stacking50 lights (Ha)
50 lights (Oiii)
10 lights (Sii)
30 darks
30 flats
30 dark flats
imaging session detail

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