I need to purchase a tripod for star tracker use. I was looking at the Manfrotto 055 and wondering about alternatives. The 055 has the centre column and while that's handy for photography I wonder if it's rock solid. I also found the Acrtise AS80C which has a bowl head adapter. Carbon not strictly necessary but certainly a nice to have as it would make for portability (kit in/on a backpack). I'm going to buy used and £200 absolute max, preferably less. Main requirement is a stable tripod for use with a star tracker. Weight capacity needs to be 5-7kg or so to have a good margin for excess capacity (expect 2-3kg actual). If I can find something with a bag and maybe a head so I can use for photography that would be great. Does anyone have experience with the Arctise? Any suggestions please?