There are plenty of sites that will tell you what telescopes and spectroscopes do — just try Googling “telescope” and “spectroscope.” Basically what every telescope does is to gather light. Spectroscopes break light down into its component wavelengths to study what emits the light. All of these tools have told us how stars work and how the universe is structured.
Vansig Said,
reflecting telescopes are more accurate than refracting telescopes, offering more-perfect optical properties than refractors, because properties of reflection are independent of wavelength.
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There are plenty of sites that will tell you what telescopes and spectroscopes do — just try Googling “telescope” and “spectroscope.” Basically what every telescope does is to gather light. Spectroscopes break light down into its component wavelengths to study what emits the light. All of these tools have told us how stars work and how the universe is structured.
reflecting telescopes are more accurate than refracting telescopes, offering more-perfect optical properties than refractors, because properties of reflection are independent of wavelength.
a good place to start is