Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  B33  ·  Flame Nebula  ·  Horsehead nebula  ·  IC 434  ·  LBN 953  ·  LBN 954  ·  NGC 2023  ·  Orion B  ·  Sh2-277
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Horsehead Nebula, apaquette
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Horsehead Nebula

Getting plate-solving status, please wait...
Horsehead Nebula, apaquette
Powered byPixInsight

Horsehead Nebula

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Description

This is 4 x 20 minute exposures per channel (RGB) over one night.
There are a lot of issues with it -- gradient, satellite trails, reflections from Alnitak, some calibration issues, and just not enough data -- but I'm posting it for now anyhow.  I'll post a new revision if I have the opportunity to take more data later.

I find it very hard to remove gradient in an image like this, where essentially the whole image is changing nebula or dust and so it is hard to know what is gradient and what is real.

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Horsehead Nebula, apaquette