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Getting there Horse Head and M42
Hi guys, I have a mystery for someone. Thismorning I took some photos of the horse head nebula and the great orion nebula.
The orion nebula is 72 30 second subexposures at 1600 iso and 20 8 second mask frames.
The Horse Head nebula is 10 5 minute exposures at 400 iso.
To go with this I shot around 40 dark frames for the orion neb and 10 for the horse head. 26 flat frames were taken.
After processing there are weird radial noise lines through the images, I stretched the dark flat and bias frames and there is no sign of the noise. I then decided to stack the light frames with no calibration frames, that image did not have the lines but was badly vignetted and had far less detail.
I hope someone more experienced can tell me how to get rid of them as I should be imaging from a dark site this week.
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