Last week, a CalSky alert email reminded me about a close passage of the International Space Station to the bright Arcturus, in the Bootes constellation.

Alessia was here, so we catched this opportunity to do some "garden astronomy" together, watching the passage while also trying to record it on camera.

The idea was to do two shots: a wide field, with my large sensor ASI1600mm and an 85mm lens, and a narrow field with the telescope.

It was a beautiful, almost hot evening. Unfortunately, not everything went as planned: the ISS was passing a bit further then expected, since I forgot to update my location coordinates in CalSky, so the telecope shooting was missed, and a few technical issues, plus me choosing the wrong recording duration on the shooting program, almost made me miss the passage itself even on the wide field.

But after a few minutes, without even knowing if the recording was actually successful, looking the frames I was able to spot this bright strip moving through the stars. Although this was meant to be just a "backout shooting", it's still a good catch. We also recorded a hint of a plane passing through the field, at the end of the passage.

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