Optical or radio telescope
telescope
Spectrograph.
A spectrometer.
Binoculars, cameras, the human eye, probes...
Typically, astronomers use various types of telescopes. These days, everything is being controlled by computers, so you'd need to include "computers" in any list of tools.
weights
IT IS USED for us to see planets part of space and some parts of our heavenly bodies and it is also used for astronomers to see heavenly bodies for then to write a fact about our space
Magnetometer
instruments used in plate tectonics?
Telescopes are the main instruments. There are many different types, such as radio telescopes, besides the "usual" optical telescopes. Other instruments such as spectrometers are very useful too.
A microscope would be one instrument used.
nearly all heavenly bodies that can observed by the naked eye can be used for navigation.... assuming you can identify the body of course!