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Focus randomly changed during timelapse – possibly due to temperature?
Focus randomly changed during timelapse - possibly due to temperature? This week, I participated in an astrophotography workshop at the McDonald Observatory. the shooting was fun but the instruction was a bit elementary for my experience level. I elected to just shoot timelapses, since I don't have a star tracker. anyways, I shot this timelapse for about four hours, but at the end of the shoot, I realized that abou...
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