These telescopes have allowed astronomers to peer far into space (and back in time).

It is equipped with modern imaging detectors allowing astronomers to conduct many types of research.

The discovery of pulsars allowed astronomers to study an object never observed before, the neutron star.

This allowed astronomers to determine the distance of stars, including main sequence and giants, using the spectroscope.

Cl 0024+17, is allowing astronomers to probe the distribution of dark matter in space.

Observations of material being ejected from the nucleus allowed astronomers to establish its rotation period.

The design is considered revolutionary since it allowed amateur astronomers to build fairly large telescopes.

This tool allowed amateur astronomers to contribute to some phases of serious research.

The database allows astronomers around the world access to its information.

The binary nature of the system allowed astronomers to measure the mass of the neutron star.