Saturday, July 10, 2021
My images of the ISS pass of 9 July, 2021
|The ISS passing through Leo and above Venus and Mars around 19:10, Canon IXUS 1 seconds exposure, 20 images. Images stacked in ImageJ and a MAX-Z projection with brightness turned up.||Same sequence. Images stacked in Deep sky stacker and aligned on the stars then curves adjusted in GIMP. Click to embiggen.|
This evening was excellent for the ISS pass.Clear and cloudless, the ISS passed through Leo above Regulus, Mars and Venus, a rather spectacular pass. Having Learn my lesson from the previous nightI went with a train of 10 1 second exposures at ISO 1600. I captured most of the pass, with a gap due to timer delay i setting off the 10 shot train.
I stacked the images first in image J, aligned on the frames. The earth rotated in the 30 seconds the sequence took, so the stars and planets are trailed. Then I stacked in DeepSkyStacker aligned on the stars for comparison, the stars aren't trailed but the horizon is blurred and DeepSkyStacker dropped a few frames. Of course, with the camera chugging away by it self I could watch the pass which was rather nice indeed.
|Animated GIF of the ISS under the Southern Cross|