Part · discovery

Nighttime fixed-star observation field

Naturally available stellar field permitting repeated same-star transit sighting; site visibility, weather and astronomical time-transfer corrections unqualified; construction hypothesis only, actual chemistry/temperature/duty, amounts and suitability unknown.

Candidate raw material · not a reviewed natural endpointClosure: OpenInventory incomplete

Candidate natural occurrence. Availability, recognition, usable quantity and acquisition have not been approved. This is not a closed natural endpoint.

Capability requirements and tolerances

Consumer-specific numerical targets, quantities and acceptance limits remain open or incompletely reviewed. No smartphone-grade suitability is claimed. Distinct capability tiers require their own making route and qualification.

Parts and Tools needed

No researched inventory yet. This is an unexpanded frontier; an empty list does not mean the item can be obtained directly from nature.

What remains unresolved

Manufacture, quantities, suitability and complete inventory remain unreviewed.

Canonical reuse assessment

{
  "checked": [],
  "decision": "Different physical function or material state from checked records; no built stock or acceptance asserted."
}

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Used by

Items that directly require this item in their selected inventory.

Astronomical time fixed-star sighting frame

Paths from Smartphone

These routes together include every item that can lead from Smartphone to this item. Repeated path combinations are collapsed; recipes are omitted.

Shortest route: Smartphone → Cover glass → Time comparison reference → Astronomical time fixed-star sighting frame → Nighttime fixed-star observation field

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