Orion Horsehead nebula

I’m not utterly thrilled by this result it can certainly better, I need to add additional Luminance data to reduce the noise and increase detail. This was actually more an exercise in combining NEF Nikon D750 color data taken by the C11 with Starizona reducer with monochrome ASI183MM data taken with the Esprit 120. This was done with AstroPixelProcessor 1.071. As you can see it worked wonderful.

The NEF color frames were split along the RGB color channels and combined with the Luminance result using the RGB Combine tool. The luminance noise was still very present as the Gain settings (230) were too high during the ASI183 capture.

There are some artefacts like the obvious magenta colors top left, and the top right cut-off angle: I need to look into these.

Clear again after 2 months!

Yesterday evening, a large break in the eternal cloud pack allowed at last some more imaging! Perfect for the first light of the ASI183MM and also the new guiding/planetary camera the ASI290MM.

During the imaging session, I could picture the setup before and after the streetlights were switched off…. Imagine the difference!

Lights still on
Nikon D750 30s 24mm iso800 F6dot7
Imaging in the plain light off a streetlight 30 meters from the scope… Nikon D750 30s 24mm iso800 F6.7
Streetlights switched off
Nikon D750 30s 24mm iso800 F6dot7
And a few seconds later the lights are switched off! Nikon D750 30s 24mm iso800 F6dot7 SQM values dropped a bit from 20,30 to 20,55
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