William Optics, on its own published figures
William Optics builds apochromatic refractors for imaging and its cheapest printed instrument is $498.00, which is six times the entry price of this index and still the bottom of its own range. It is the brand that shows what happens above the beginner shelf, where the money buys glass quality rather than aperture.
Verified facts on William Optics
| What | Figure | The brand's own words | Source |
|---|---|---|---|
| Lowest printed telescope price | $498/unit | "Zenithstar 61 II Sale price $498.00 USD" | William Optics telescopes store, Zenithstar 61 II (lowest printed telescope price) checked September 2026 |
| Aperture of that instrument | No price printed on the page; dealer or quote only (checked September 2026) | William Optics telescopes store listing checked September 2026 | |
| Focal length of that instrument | No price printed on the page; dealer or quote only (checked September 2026) | William Optics telescopes store listing checked September 2026 |
William Optics categories, evidenced
William Optics keeps its own page for the 0 categories this index tracks; each is linked below and answered 200 when the index was built.
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Why the cheapest instrument here costs six times the cheapest in the index
An apochromatic refractor uses several elements of specialised glass to bring the colours to a common focus, and that glass is most of the price. A 61mm apo and a 130mm reflector can cost the same and do entirely different jobs: the reflector gathers four times the light, the apo gives a cleaner star image across a camera sensor.
The store listing prints the model name and the price and no aperture, so this index publishes no aperture figure for the brand. The number in the model name is not evidence of anything the page said.