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J3RRYLIKESCHEESE OP t1_jdpmgvi wrote

Here is my latest DSO work! Caldwell 38 aka The Needle Galaxy. I took this on March 22, 2023 from my backyard in Salem, OR. I spent about 5 hours to capture this data, meaning that on average about half the frames were rejected due to tracking/wind or other factors.

Details: Used sharpcap livestacking to shoot 50, 3 minute stacks consisting of 180x1 sec exposures. Then RGB alignment was done on all the frames to align the color channels using AstroSurface, and the data the 50, 3min stacks were also stacked using AstroSurface. The master stack was preprocessing in SiRiL with green noise removal, background extraction, banding reduction and color calibration. Final color adjustment, denoise, and sharpening done in GIMP.

Gear: SW 10" GoTo Dob and Uranus-C with UV/IR cut filter

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johnbarnshack t1_jds7p3k wrote

Why do you take such short exposures?

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J3RRYLIKESCHEESE OP t1_jdsmx2e wrote

With my AZ setup, I'm limited by tracking, field rotation (mostly tracking) so I shoot 1 second exposures for the sharper images

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