Jupiter and it's moon IO (casting its shadow on the planet globe) as seen the night of August 2020. The NEB outbreak visible in the upper right expanded consistently in few days, spreading over a much larger part of the planet. Average/Good seeing conditions, average transparency. 4 frames of 60" each per RGB channel derotated for the planet, centered on 15:02UT. C14 + Siebert 1.5x (@ f/16) - Drizzle 1.5x - ZWO ASI290MM - iOptron CEM120 - Singapore
The evening of August 22 started with quite poor seeing conditions but after few hours (with the planet setting) the seeing improved to become fairly good, with Jupiter still around 50 degrees above the horizon. After taking several RGB sequences of the planet I noticed that Ganymede and Io were quite close to each other and not far away, so I decided to shoot the two moons as well and mount them in the same image of Jupiter. To maintain a reasonable size image I placed the two moons a bit closer to the planet than they really were of the time of imaging, other than that the rest is exactly as it look at the respective time of imaging reported below. I find that having Io and Ganymede in the same panel with Jupiter the image a little more depth than usual and a sense of cosmic scale... As a further bonus, the NEB outbreak discovered few days earlier and still at its beginning is visible in the upper left, a reminder that Jupiter is constantly changing.. Average/Good seeing conditions, average transparency. 6 frames of 60" each per RGB channel derotated for the planet, centered on 15:35UT plus 2 frames of 60" each RGB for the moons centered on 16: 56UT. C14 + Siebert 1.5x (@ f/16) - Drizzle 1.5x - ZWO ASI290MM - iOptron CEM120 - Singapore
I took this image few days after the discovery of the outbreak in the NTB, recording its beginning of the expansion. Very good seeing conditions, good transparency. 4 frames of 60" each per RGB channel derotated. C14 + Siebert 1.5x (@ f/16) - Drizzle 1.5x - ZWO ASI290MM & ADC - iOptron CEM120 - Singapore
