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What are these Artifacts???!


TheMan

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I was just processing 15 hrs of data on the Vela SNR, and I noticed this artifact. This is 1/4 through my post processing. Does anyone know if I can fix this, or is something wrong? I use Pixinsight & Photoshop.871295752_Gum12.thumb.jpg.fdbccac45f2606062d08ddb35b38f07f.jpg

Here's a starless version.

test1_starless.jpg

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It should be Windorised Sigma Cliping by default on Pix and if it is.... I have no idea... I would try to experiment and stack without darks or without Bias.

Windorised Sigma Cliping will not get rid of this type of noise completely, but should reduce it strongly.

Noise reduction on Luminance and on Chrominance, before stretching, will help a lot also.

Untitled.png.cc7eb6ef6989902fc5f25ba2c0253040.png

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