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Are there any images of Curiosity during the sky crane operations?

They crashed the skycrane afterwards, so putting more weight and expenses for a camera on a skycrane would just be a waste of time and money. On the other hand, it wasn't flying blind either... you ...
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Has there ever been a go-pro satellite?

The answer is yes. The NanoAvionics MP42 microsatellite (1) included a GoPro on a boom to take a selfie, as shown below (2) (1) ...
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How did the JWST take a selfie?

Point source viewed out of focus All you need to do to make a pretty good image of your aperture is to: Find a collimated (parallel) bundle of rays, e.g. a point source far away, e.g. a relatively ...
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