CAS - Jupiter Saturn Conjunction


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Great Conjunction of Jupiter and Saturn

The photographs below were taken by some of our club members of the Great Conjunction of Jupiter and Saturn in December 2021.

Click on thumbnail for a larger image

Four images stacked in Photoshop to separately capture with best exposure while erasing out over and underexposed areas

Captured on 21 December 2020 ~ 6:30 PM

Meade 10" f/6.3 SCT at prime focus with a 2X Barlow. Canon Rebel T5I camera

  • Jupiter at ISO 3200 1/250 seconds
  • Saturn at ISO 3200 1/50 seconds
  • Moons of Jupiter at ISO 6400 1/3 seconds
  • Moons of Saturn at ISO 12800 1.3 seconds

Seeing was turbulent due to low elevation over Mt Elden, the city of Flagstaff and fireplace smoke. I was unsuccessful at capturing useful images of the planets using my Canon 60Da in its Movie Crop Mode for stacking. I was therefore forced to shoot at high ISOs for maximum shutter speeds to 'freeze' the images as much as possible. In total I shot 38 frames to get these four.

Richard Edmonds

Taken from Beaver Creek. Used a TMB 92mm refractor

Padraig Houlahan

AP155 at f/7 with ZWO ASI120 webcam around 6:30pm, 1500 frames, best 10% combined in AstroStakkert, processed in Registax and PS CS6. Saturn's brightness was enhanced relative to Jupiter. Seeing was pretty bad that low, so I am happy with the results.

Klaus Brasch

This is a stack of stacks with various exposures combined in Photoshop. Exposures varied from 1 sec to 1/1000 sec.

Joseph McMenamin

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