Like James7ca, I noticed that Mars and Uranus were closing on each other and were due to reach their closest point around the 21st of Jan, with the moon also close to both planets at that time. Unlike James, I don't really have a good setup to image such a large separation but thought I might have a go anyway with my Canon 700D and stock 75-300mm lens. On the 17th I was able to catch a couple of images of Uranus and Mars with this setup, which showed I was at least able to capture a red spot and a blue dot on a black background. On the 21st, the moon entered the picture and of course swamped the entire area with light, but I was at least able to capture the relative positions of the planets.
So, after a number of failed attempts to stack these images (using a mixture of DSS, Sequator, PIPP and AS!3), I've eventually chosen one frame from each attempt using different exposure times and ISO values, massaged the results onto one multi-layer composite to give a "representation" of the triple conjunction on 21 Jan 2021 at around 11:00PM. There is one frame for the Uranus/Mars conjunction (17 Jan), one optimised for the Moon (21 Jan) and one to show the relative positions of the planets. Since Uranus didn't move very far over those 4 days against the background star field, I have overlaid the 17 Jan image on top of the 21 Jan image. Mars was shifted manually to the new position since it did move a considerable distance.
It's a highly artificial composite image that has resulted, but was representative of the conjunction. I checked the locations of the planets and stars with Stellarium to make sure the locations are accurate. The first image below shows the final result, the second image has the individual frames used to construct this image.
Andrew
