That's a spectroscope, usually coupled to the business end of a telescope. The telescope
is responsible for producing enough light from the star for the spectroscope to work with.
They can use a prism.
Saturn has three main rings. You need a telescope, but they are visible in a small telescope.
There are a number of instruments aboard the Hubble Space Telescope. The primary telescope does collect light in the visible spectrum.
Object that only shine with radio waves and not in the visible spectrum an object hidden by dust that block visible light.
Currently, the largest optical telescope is the Gran Telescopio Canarias in the Canary Islands, Spain.
Hubble
A grating or a prism
It is not visible unless you are using a high grade telescope that isn't available to the public and is only used by profession astronomers and scientists.
Pluto is not visible without a telescope.
telescope or maybe binoculars
Saturn has three main rings. You need a telescope, but they are visible in a small telescope.
They can be visible from Earth without the aid of a telescope.
There are a number of instruments aboard the Hubble Space Telescope. The primary telescope does collect light in the visible spectrum.
A radio telescope detects light in the form of radio waves and a refracting telescope detects light in the visible wavelengths
With a good telescope, yes.
No.
Object that only shine with radio waves and not in the visible spectrum an object hidden by dust that block visible light.
Currently, the largest optical telescope is the Gran Telescopio Canarias in the Canary Islands, Spain.