It's difficult to definitively say which state has the "largest collection" of telescopes, as the definition of "largest" is subjective and depends on what criteria you prioritize.

Here are some considerations:

* Number of Telescopes: This is a simple measure, but it doesn't consider the size, type, or scientific importance of the telescopes.

* Total Aperture: This is a more meaningful measure as it considers the light-gathering power of the telescopes.

* Scientific Impact: The most impactful telescopes might not be the largest or most numerous, but they may make the most significant contributions to our understanding of the universe.

That said, here are some states that are prominent in astronomy and might be considered to have a large collection of telescopes:

* Hawaii: Home to the Mauna Kea Observatories, which boast some of the world's largest and most powerful telescopes, including the Keck Telescopes and the Subaru Telescope.

* Arizona: The Kitt Peak National Observatory, with over 20 telescopes, and the Mount Graham International Observatory, home to the Very Large Array (VLA) and the Heinrich Hertz Submillimeter Telescope, are major astronomical centers.

* California: The Palomar Observatory, with its famous 200-inch Hale Telescope, and the Lick Observatory, known for its research in cosmology and stellar evolution, are notable institutions.

Ultimately, the "state with the largest collection of telescopes" is a matter of perspective. All these states, and many others, contribute significantly to the field of astronomy.