The most important thing you need is a good tripod with a good tripod head. Most budget tripods can support most lightweight gear when the camera is level. The center of gravity of the camera/lens rig is centered over the tripod.
Telephoto lenses can be considerably heavier than a typical camera kit lens. Capturing photos of the Moon requires you to point the rig towards the sky. Doing so moves the CoG off center with the tripod legs.
This is where budget tripod legs and heads break down. You point the camera at the Moon, and everything shifts as you tighten the head to lock the rig in position. Many times the shift (it’s called backlash) can be so severe that the Moon is no longer in the frame.
I believe this shot was taken with my T5 and the EF 75-300mm kit lens. I used a $200 Induro tripod kit and the built in shutter delay timer.
Better yet, if you have, or have access to a telescope, get an adapter for your camera to mount on to where the telescope would normally go. The camera replaces the eyepiece. This image was taken with a Canon EOS RP mounted to an Orion SkyView Pro 100mm ED EQ refractor. FYI... the 100mm refers to the diameter of the telescope, not the focal length. The focal length is 900mm F/9 for 1/200 second. Normally I do this on a cloudless night, but the effect of finding a break in the clouds turned out pretty cool.
