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banding in exposure

philip57

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philip57

philip57

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Hi,

I am a beginner at astrophotography processing. Attached is a result of exposures over 2 nights using 50 sec and 80sec on 1st night ( a total of 80 exposures) and 40sec on the second night ( another 40 exposures). They were stacked in DSS using Main group and group1.

I used my limited knowledge of processing in photoshop. Levels, curves etc. I seem to have horizontal noisy lines banding across the image from top to bottom. I am not sure whats causing this.

I have a skywatcher ed80 and canon450d camera

Philip

FlameNebula18th1stFebruary.tif

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