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A comment on SR-71 Blackbird Astro-Nav System (a.k.a. R2-D2) worked by tracking the stars. Parent comment

Re:SR-71 Blackbird Astro-Nav System (a.k.a. R2-D2) worked by... by geon on Monday September 25, 2023 @07:27PM (#37652181)
Stars don’t move a lot, so exposure time can be high.
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