Halcyon — Calibration

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events logged

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locations

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verified mean error

Your name or handle · optional

Photos from your shoot

Tap to upload — or drag files here — phone photos, screenshots, or short video clips

Date, time & location auto-detected where available · JPEG/PNG/video · up to 5 files

Event details · auto-filled from photos

Location (editable)

Date

Time (local, editable)

Time of day

Scene type

Terrain

Elevation

Optional — helps improve the forecast

App forecast score you saw (optional)

Your personal rating (optional)

Halcyon calibration