I have been aware that setting up my telescope mount on the grass in my garden is not ideal, as the tripod can sink into the ground after some time. This could have an impact both on the stability of the system, as well as the polar alignment. Hence I decided to buy some tripod support feet to put under the tripod.
Previously I had the vibration suppression tripod pads from Celestron under my Celestron CGEM mount. But as they were permanently under the tripod, the gel rings which dampened the vibrations eventually was ruined by exposure to water and swelled up. Hence when I upgraded to the telescope pier, these were discarded into the waste bin. In hind sight, I perhaps should have kept the feet, which probably would still have been good support on the grass, even without the vibration dampening gel ring.
Anyway, I decided to get a different tripod support feet from eBay. These are much larger in size (120mm diameter) to spread the weight over a larger area of ground. Being completely plastic, they can be left outdoors permanently and still remain functional.
I was initially a little skeptical about the small round hole on the top where the tripod foot is supposed to sit. But it looks large enough for the tip of my iOptron ZEQ25 1.5″ tripod feet to fit nice and firmly.
The tripod does feel nice and steady when sitting on these feet, and should allow me to mount a heavier telescope on my portable mount.
I have left these feet in the garden where they seem to have stayed in place all this time and allowed me to place my iOptron ZEQ25 very accurately – really cuts down on the time for setting up. I would definitely recommend these for those intending to use their telescope mount on grass.